| ID |
Date |
Author |
Subject |
|
260
|
Wed Feb 23 20:06:43 2022 |
TD CN | E141 kinematics |
Assuming DSSSD is 1000um thick we can expect to observe protons for E_lab=11MeV as follows
14N(d,p)15N(gs) E_p=5.4MeV
14N(d,p)15N(5.3) E_p=8.0MeV |
| Attachment 1: E141_kinematics.txt
|
________________________________________________________________________________
Reaction: 14N(2H,1H)15N
A: 14 2 1 15
Z: 7 1 1 7
Mass(amu): 14.003074 2.014102 1.007825 15.000109
Error(keV): 0.001 0.000 0.000 0.001
Origin:
Status:
Q = 8.6087 +/- 0.0000 MeV
________________________________________________________________________________
Enter reaction: 14n(2h,4he)
________________________________________________________________________________
Reaction: 14N(2H,4He)12C
A: 14 2 4 12
Z: 7 1 2 6
Mass(amu): 14.003074 2.014102 4.002603 12.000000
Error(keV): 0.001 0.000 0.000 0.000
Origin:
Status:
Q = 13.5742 +/- 0.0000 MeV
________________________________________________________________________________
Medium: si
density: 2.33000 g/cm**3
Molecule:
1 atom(s) of charge: 14.0 mass: 28.0860 amu
Average ionization potential: 0.172253E-03 MeV
Electron density: 0.699429 *10**24/cm**3
Average charge: 14.0000
Ion: 1h
charge: 1.0 mass: 1.0000 amu
Energy(MeV) dE/dx(MeV/mm) dE/dx(MeV.cm**2/mg) Range(mm) Range(mg/cm**2)
1.00000 41.7638 0.179244 0.168683E-01 3.93032
2.00000 26.4413 0.113482 0.479716E-01 11.1774
3.00000 19.8139 0.850383E-01 0.920942E-01 21.4580
4.00000 16.0296 0.687967E-01 0.148410 34.5796
5.00000 13.5554 0.581779E-01 0.216350 50.4095
6.00000 11.7994 0.506413E-01 0.295737 68.9066
7.00000 10.4828 0.449906E-01 0.385601 89.8451
8.00000 9.69841 0.416241E-01 0.486197 113.284
9.00000 8.85218 0.379922E-01 0.594047 138.413
10.0000 8.15487 0.349994E-01 0.712066 165.911
11.0000 7.56942 0.324868E-01 0.839325 195.563
12.0000 7.07026 0.303445E-01 0.976032 227.415
13.0000 6.63918 0.284943E-01 1.12211 261.451
14.0000 6.26279 0.268789E-01 1.27739 297.632
15.0000 5.93105 0.254552E-01 1.44140 335.846
16.0000 5.63627 0.241900E-01 1.61476 376.239
17.0000 5.37246 0.230577E-01 1.79614 418.501
18.0000 5.13484 0.220380E-01 1.98680 462.925
19.0000 4.91963 0.211143E-01 2.18570 509.269
20.0000 4.72370 0.202734E-01 2.39308 557.587
Medium: si
density: 2.33000 g/cm**3
Molecule:
1 atom(s) of charge: 14.0 mass: 28.0860 amu
Average ionization potential: 0.172253E-03 MeV
Electron density: 0.699429 *10**24/cm**3
Average charge: 14.0000
Ion: 4he
charge: 2.0 mass: 4.0000 amu
Energy(MeV) dE/dx(MeV/mm) dE/dx(MeV.cm**2/mg) Range(mm) Range(mg/cm**2)
1.00000 257.862 1.10670 0.382916E-02 0.892195
2.00000 217.610 0.933946 0.970542E-02 2.26136
3.00000 184.248 0.790762 0.147204E-01 3.42986
4.00000 159.425 0.684229 0.205680E-01 4.79233
5.00000 140.613 0.603489 0.272616E-01 6.35195
6.00000 125.944 0.540534 0.347858E-01 8.10510
7.00000 114.206 0.490155 0.431299E-01 10.0493
8.00000 104.603 0.448940 0.522753E-01 12.1802
9.00000 96.5996 0.414591 0.622123E-01 14.4955
10.0000 89.8241 0.385511 0.729664E-01 17.0012
11.0000 84.0110 0.360562 0.844573E-01 19.6786
12.0000 78.9663 0.338911 0.967262E-01 22.5372
13.0000 74.5447 0.319934 0.109668 25.5527
14.0000 70.6356 0.303157 0.123440 28.7614
15.0000 67.1531 0.288211 0.137756 32.0971
16.0000 64.0297 0.274806 0.152904 35.6267
17.0000 61.2114 0.262710 0.168794 39.3289
18.0000 58.6547 0.251737 0.185593 43.2431
19.0000 56.3239 0.241733 0.202664 47.2208
20.0000 54.1897 0.232574 0.220839 51.4555
______________________________________________________________________________________________________________________________
Reaction: 14N(2H,2H)14N
A: 14 2 2 14
Z: 7 1 1 7
Mass(amu): 14.003074 2.014102 2.014102 14.003074
Error(keV): 0.001 0.000 0.000 0.001
Origin:
Status:
Q(gs): 0.0000 +/- 0.0001 MeV
Projectile lab energy: 11.000 MeV
CM energy: 9.614 MeV
Excitation energy: 0.000 MeV
Reaction Q-value: 0.000 MeV
Reaction threshold: 0.000 MeV
Particle 3 Particle 4 Non-relativistic Jacobians
( scattered/ejectile ) ( recoil ) Ejectile Ejectile
Ejectile Recoil dOmega/ dOmega/
Lab CM Lab Lab Lab dOmega Lab CM Lab Lab Lab dOmega dOmega dOmega Recoil Recoil
Angle Angle Energy Beta ToF Lab/CM Angle Angle Energy Beta ToF Lab/CM Lab/CM Lab/CM dOmega dOmega
(deg) (deg) (MeV) (ns/cm) ratio (deg) (deg) (MeV) (ns/cm) ratio Lab/Lab CM/Lab
0.00 0.00 11.000 0.1078 0.309 0.0000 NaN 180.00 0.000 NaN NaN NaN 0.0000 NaN NaN NaN
10.00 11.44 10.952 0.1076 0.310 0.7665 84.28 168.56 0.048 0.0027 12.281 2.5089 0.7665 2.5084 0.3056 0.3987
20.00 22.83 10.810 0.1069 0.312 0.7758 78.58 157.17 0.190 0.0054 6.183 1.2631 0.7758 1.2628 0.6144 0.7919
30.00 34.14 10.582 0.1058 0.315 0.7915 72.93 145.86 0.418 0.0080 4.169 0.8516 0.7915 0.8515 0.9295 1.1744
40.00 45.33 10.281 0.1043 0.320 0.8134 67.33 134.67 0.719 0.0105 3.176 0.6488 0.8134 0.6487 1.2539 1.5416
50.00 56.36 9.920 0.1024 0.326 0.8416 61.82 123.64 1.080 0.0129 2.592 0.5294 0.8415 0.5294 1.5897 1.8891
60.00 67.19 9.517 0.1003 0.332 0.8758 56.40 112.81 1.483 0.0151 2.212 0.4518 0.8757 0.4518 1.9384 2.2135
70.00 77.80 9.089 0.0981 0.340 0.9158 51.10 102.20 1.911 0.0171 1.949 0.3981 0.9157 0.3980 2.3005 2.5123
80.00 88.18 8.654 0.0957 0.348 0.9610 45.91 91.82 2.346 0.0190 1.759 0.3593 0.9609 0.3593 2.6748 2.7835
90.00 98.31 8.228 0.0933 0.357 1.0107 40.84 81.69 2.772 0.0206 1.618 0.3305 1.0106 0.3304 3.0584 3.0263
100.00 108.18 7.822 0.0910 0.366 1.0636 35.91 71.82 3.178 0.0221 1.511 0.3086 1.0635 0.3086 3.4459 3.2402
110.00 117.80 7.448 0.0888 0.375 1.1181 31.10 62.20 3.552 0.0233 1.430 0.2919 1.1181 0.2919 3.8300 3.4256
120.00 127.18 7.113 0.0868 0.384 1.1724 26.41 52.82 3.887 0.0244 1.367 0.2791 1.1724 0.2791 4.2008 3.5832
130.00 136.35 6.825 0.0851 0.392 1.2242 21.82 43.65 4.175 0.0253 1.319 0.2693 1.2242 0.2693 4.5465 3.7140
140.00 145.33 6.585 0.0836 0.399 1.2711 17.34 34.67 4.415 0.0260 1.282 0.2619 1.2711 0.2619 4.8542 3.8189
150.00 154.14 6.398 0.0824 0.405 1.3107 12.93 25.86 4.602 0.0266 1.256 0.2565 1.3107 0.2565 5.1107 3.8993
160.00 162.83 6.263 0.0815 0.409 1.3408 8.58 17.17 4.737 0.0269 1.238 0.2528 1.3408 0.2528 5.3039 3.9559
170.00 171.44 6.182 0.0810 0.412 1.3596 4.28 8.56 4.818 0.0272 1.228 0.2507 1.3596 0.2507 5.4241 3.9896
180.00 180.00 6.155 0.0808 0.413 0.0000 0.00 0.00 4.845 0.0272 1.224 0.0000 0.0000 0.0000 5.4649 *******
______________________________________________________________________________________________________________________________
Reaction: 14N(2H,2H)14N
A: 14 2 2 14
Z: 7 1 1 7
Mass(amu): 14.003074 2.014102 2.014102 14.003074
Error(keV): 0.001 0.000 0.000 0.001
Origin:
Status:
Q(gs): 0.0000 +/- 0.0001 MeV
Projectile lab energy: 3.000 MeV
CM energy: 2.623 MeV
Excitation energy: 0.000 MeV
Reaction Q-value: 0.000 MeV
Reaction threshold: 0.000 MeV
Particle 3 Particle 4 Non-relativistic Jacobians
( scattered/ejectile ) ( recoil ) Ejectile Ejectile
Ejectile Recoil dOmega/ dOmega/
Lab CM Lab Lab Lab dOmega Lab CM Lab Lab Lab dOmega dOmega dOmega Recoil Recoil
Angle Angle Energy Beta ToF Lab/CM Angle Angle Energy Beta ToF Lab/CM Lab/CM Lab/CM dOmega dOmega
(deg) (deg) (MeV) (ns/cm) ratio (deg) (deg) (MeV) (ns/cm) ratio Lab/Lab CM/Lab
0.00 0.00 3.000 0.0565 0.591 0.0000 NaN 180.00 0.000 0.0000 Inf NaN 0.0000 NaN NaN NaN
10.00 11.43 2.987 0.0564 0.592 0.7672 84.28 168.57 0.013 0.0014 23.541 2.5099 0.7672 2.5098 0.3057 0.3984
20.00 22.82 2.948 0.0560 0.596 0.7765 78.59 157.18 0.052 0.0028 11.851 1.2636 0.7765 1.2635 0.6146 0.7915
30.00 34.13 2.886 0.0554 0.602 0.7921 72.93 145.87 0.114 0.0042 7.991 0.8519 0.7921 0.8519 0.9298 1.1738
40.00 45.31 2.804 0.0546 0.611 0.8139 67.34 134.69 0.196 0.0055 6.087 0.6490 0.8139 0.6490 1.2541 1.5408
50.00 56.33 2.706 0.0537 0.622 0.8420 61.83 123.67 0.294 0.0067 4.967 0.5296 0.8420 0.5296 1.5899 1.8882
60.00 67.16 2.596 0.0526 0.635 0.8761 56.42 112.84 0.404 0.0079 4.239 0.4520 0.8761 0.4520 1.9384 2.2126
70.00 77.78 2.480 0.0514 0.649 0.9160 51.11 102.22 0.520 0.0089 3.735 0.3982 0.9160 0.3982 2.3003 2.5113
80.00 88.15 2.361 0.0501 0.665 0.9611 45.92 91.85 0.639 0.0099 3.371 0.3594 0.9610 0.3594 2.6742 2.7826
90.00 98.28 2.245 0.0489 0.682 1.0106 40.86 81.72 0.755 0.0108 3.100 0.3305 1.0105 0.3305 3.0572 3.0254
100.00 108.15 2.135 0.0477 0.700 1.0633 35.92 71.85 0.865 0.0115 2.896 0.3087 1.0632 0.3087 3.4442 3.2393
110.00 117.78 2.033 0.0465 0.717 1.1177 31.11 62.22 0.967 0.0122 2.739 0.2920 1.1176 0.2920 3.8277 3.4248
120.00 127.16 1.941 0.0455 0.734 1.1718 26.42 52.84 1.059 0.0127 2.618 0.2791 1.1717 0.2791 4.1977 3.5824
130.00 136.33 1.863 0.0445 0.749 1.2234 21.83 43.67 1.137 0.0132 2.526 0.2693 1.2234 0.2693 4.5427 3.7132
140.00 145.31 1.797 0.0437 0.763 1.2701 17.34 34.69 1.203 0.0136 2.457 0.2619 1.2701 0.2619 4.8497 3.8183
150.00 154.13 1.746 0.0431 0.774 1.3096 12.94 25.87 1.254 0.0139 2.406 0.2565 1.3096 0.2565 5.1056 3.8987
160.00 162.82 1.710 0.0427 0.782 1.3396 8.59 17.18 1.290 0.0141 2.372 0.2528 1.3396 0.2528 5.2984 3.9553
170.00 171.43 1.688 0.0424 0.787 1.3583 4.28 8.57 1.312 0.0142 2.352 0.2507 1.3583 0.2507 5.4183 3.9890
180.00 NaN 1.680 0.0423 0.789 NaN 0.00 NaN 1.320 0.0142 2.345 NaN NaN NaN NaN NaN
______________________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________________
Reaction: 14N(2H,1H)15N
A: 14 2 1 15
Z: 7 1 1 7
Mass(amu): 14.003074 2.014102 1.007825 15.000109
Error(keV): 0.001 0.000 0.000 0.001
Origin:
Status:
Q(gs): 8.6087 +/- 0.0001 MeV
Projectile lab energy: 11.000 MeV
CM energy: 9.614 MeV
Excitation energy: 0.000 MeV
Reaction Q-value: 8.609 MeV
Reaction threshold: 0.000 MeV
Particle 3 Particle 4 Non-relativistic Jacobians
( scattered/ejectile ) ( recoil ) Ejectile Ejectile
Ejectile Recoil dOmega/ dOmega/
Lab CM Lab Lab Lab dOmega Lab CM Lab Lab Lab dOmega dOmega dOmega Recoil Recoil
Angle Angle Energy Beta ToF Lab/CM Angle Angle Energy Beta ToF Lab/CM Lab/CM Lab/CM dOmega dOmega
(deg) (deg) (MeV) (ns/cm) ratio (deg) (deg) (MeV) (ns/cm) ratio Lab/Lab CM/Lab
0.00 0.00 19.605 0.2012 0.166 0.0000 0.00 180.00 0.004 0.0008 43.955 0.0000 0.0000 0.0000 NaN NaN
10.00 10.72 19.562 0.2010 0.166 0.8712 67.67 169.28 0.047 0.0026 12.887 -4.9755 0.8712 -4.9759 -0.1751 -0.2010
20.00 21.42 19.435 0.2004 0.166 0.8767 70.68 158.58 0.173 0.0050 6.697 0.2448 0.8767 0.2446 3.5841 4.0882
30.00 32.08 19.231 0.1994 0.167 0.8858 68.27 147.92 0.378 0.0074 4.534 0.5498 0.8858 0.5496 1.6117 1.8195
40.00 42.67 18.956 0.1980 0.168 0.8984 64.47 137.33 0.653 0.0097 3.451 0.5224 0.8984 0.5223 1.7199 1.9144
50.00 53.18 18.623 0.1963 0.170 0.9143 60.13 126.82 0.986 0.0119 2.808 0.4645 0.9142 0.4644 1.9686 2.1533
60.00 63.60 18.244 0.1943 0.172 0.9331 55.55 116.40 1.365 0.0140 2.387 0.4130 0.9330 0.4129 2.2595 2.4218
70.00 73.90 17.834 0.1922 0.174 0.9544 50.86 106.10 1.775 0.0159 2.093 0.3717 0.9543 0.3717 2.5676 2.6905
80.00 84.09 17.406 0.1899 0.176 0.9778 46.13 95.91 2.202 0.0178 1.879 0.3393 0.9777 0.3393 2.8820 2.9477
90.00 94.15 16.977 0.1876 0.178 1.0027 41.39 85.85 2.632 0.0194 1.719 0.3138 1.0026 0.3138 3.1954 3.1870
100.00 104.09 16.558 0.1854 0.180 1.0284 36.67 75.91 3.051 0.0209 1.596 0.2937 1.0283 0.2937 3.5015 3.4050
110.00 113.90 16.161 0.1832 0.182 1.0541 31.98 66.10 3.447 0.0222 1.502 0.2778 1.0540 0.2778 3.7938 3.5995
120.00 123.59 15.798 0.1812 0.184 1.0789 27.32 56.41 3.810 0.0233 1.429 0.2653 1.0788 0.2653 4.0660 3.7690
130.00 133.18 15.477 0.1794 0.186 1.1019 22.70 46.82 4.131 0.0243 1.372 0.2556 1.1018 0.2556 4.3114 3.9129
140.00 142.67 15.206 0.1778 0.188 1.1222 18.11 37.33 4.403 0.0251 1.329 0.2481 1.1222 0.2481 4.5233 4.0308
150.00 152.07 14.989 0.1766 0.189 1.1391 13.55 27.93 4.620 0.0257 1.297 0.2426 1.1390 0.2426 4.6955 4.1224
160.00 161.42 14.831 0.1757 0.190 1.1516 9.02 18.58 4.777 0.0261 1.276 0.2388 1.1516 0.2388 4.8228 4.1878
170.00 170.72 14.736 0.1751 0.190 1.1594 4.51 9.28 4.873 0.0264 1.263 0.2366 1.1594 0.2366 4.9010 4.2270
180.00 NaN 14.704 0.1749 0.191 NaN 0.00 NaN 4.905 0.0265 1.259 NaN NaN NaN NaN NaN
______________________________________________________________________________________________________________________________
Reaction: 14N(2H,1H)15N
A: 14 2 1 15
Z: 7 1 1 7
Mass(amu): 14.003074 2.014102 1.007825 15.000109
Error(keV): 0.001 0.000 0.000 0.001
Origin:
Status:
Q(gs): 8.6087 +/- 0.0001 MeV
Projectile lab energy: 3.000 MeV
CM energy: 2.623 MeV
Excitation energy: 0.000 MeV
Reaction Q-value: 8.609 MeV
Reaction threshold: 0.000 MeV
Particle 3 Particle 4 Non-relativistic Jacobians
( scattered/ejectile ) ( recoil ) Ejectile Ejectile
Ejectile Recoil dOmega/ dOmega/
Lab CM Lab Lab Lab dOmega Lab CM Lab Lab Lab dOmega dOmega dOmega Recoil Recoil
Angle Angle Energy Beta ToF Lab/CM Angle Angle Energy Beta ToF Lab/CM Lab/CM Lab/CM dOmega dOmega
(deg) (deg) (MeV) (ns/cm) ratio (deg) (deg) (MeV) (ns/cm) ratio Lab/Lab CM/Lab
0.00 NaN 11.547 0.1554 0.215 NaN 180.00 NaN 0.062 0.0030 11.216 NaN NaN NaN NaN NaN
10.00 10.48 11.530 0.1553 0.215 0.9119 146.83 169.52 0.079 0.0034 9.951 8.3535 0.9119 8.3535 0.1092 0.1197
20.00 20.94 11.481 0.1550 0.215 0.9158 122.63 159.06 0.128 0.0043 7.793 4.4681 0.9158 4.4681 0.2050 0.2238
30.00 31.37 11.400 0.1544 0.216 0.9221 105.93 148.63 0.208 0.0055 6.108 2.5075 0.9221 2.5074 0.3678 0.3988
40.00 41.77 11.292 0.1537 0.217 0.9308 93.50 138.23 0.317 0.0067 4.956 1.5952 0.9308 1.5951 0.5836 0.6269
50.00 52.10 11.160 0.1528 0.218 0.9417 83.43 127.90 0.449 0.0080 4.163 1.1310 0.9417 1.1309 0.8327 0.8842
60.00 62.38 11.009 0.1518 0.220 0.9546 74.75 117.62 0.599 0.0093 3.601 0.8690 0.9545 0.8690 1.0985 1.1508
70.00 72.58 10.845 0.1507 0.221 0.9690 66.96 107.42 0.764 0.0105 3.190 0.7077 0.9690 0.7077 1.3691 1.4130
80.00 82.70 10.672 0.1495 0.223 0.9847 59.76 97.30 0.937 0.0116 2.880 0.6016 0.9846 0.6016 1.6368 1.6623
90.00 92.75 10.496 0.1483 0.225 1.0012 52.99 87.25 1.112 0.0126 2.644 0.5281 1.0011 0.5281 1.8958 1.8936
100.00 102.70 10.324 0.1471 0.227 1.0180 46.52 77.30 1.285 0.0136 2.460 0.4754 1.0180 0.4753 2.1416 2.1037
110.00 112.58 10.160 0.1459 0.229 1.0347 40.29 67.42 1.449 0.0144 2.316 0.4365 1.0347 0.4365 2.3704 2.2909
120.00 122.38 10.008 0.1449 0.230 1.0506 34.24 57.62 1.601 0.0151 2.204 0.4075 1.0506 0.4075 2.5783 2.4541
130.00 132.10 9.872 0.1439 0.232 1.0653 28.34 47.90 1.736 0.0158 2.116 0.3857 1.0653 0.3857 2.7618 2.5925
140.00 141.76 9.757 0.1431 0.233 1.0782 22.55 38.24 1.852 0.0163 2.049 0.3696 1.0782 0.3696 2.9175 2.7060
150.00 151.37 9.665 0.1424 0.234 1.0887 16.84 28.63 1.944 0.0167 2.000 0.3579 1.0887 0.3579 3.0422 2.7943
160.00 160.94 9.597 0.1419 0.235 1.0966 11.19 19.06 2.012 0.0170 1.966 0.3500 1.0966 0.3500 3.1334 2.8573
170.00 170.48 9.556 0.1416 0.236 1.1015 5.59 9.52 2.053 0.0171 1.946 0.3454 1.1015 0.3454 3.1889 2.8951
180.00 NaN 9.542 0.1415 0.236 NaN 0.00 NaN 2.067 0.0172 1.940 NaN NaN NaN NaN NaN
______________________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________________
... 144 more lines ...
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502
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Fri Feb 9 11:58:04 2024 |
TD + CB, JM, AR, NH, AB | Run10 contd, Run11 |
12.46 DAQ continues G22-88/R10_14
c. 20MeV 16O2+ + 4He
DSSSD bias OK - attachment 1
ambient temperature 17.7 deg C ( c. 1deg C increase cf. earlier this week )
FEE64 temperatures OK - attachment 2
All system wide checks OK
WR timestamp control OK - attachment 3
ADC data item stats - attachment 4
FEE64 rates c. 0Hz except 'hot' channels aida01 ( 71k ) and aida15 ( 8k )
per FEE64 Rate and Stat spectra - attachments 5-8
events ( beam? ) aida01 asic #4 and aida04 asic #4 ( c. 200k per ASIC channel )
per FEE64 1.8.L spectra - attachments 9-10
most spectra showing background and, possibly, a small amount of scattered beam?
per FEE64 1.8.W spectra - 20us FSR - attachments 11-12
aida04 3*L and 4*L spectra - attachments 13-15
distribution by strip # - uniform across asic# #4, continuing across asic #3 with abrupt fall off c. channel 9
not Rutherford - more consistent halo/beam scattering?
what are the current lab angles subtended by the DSSSDs?
Rutherford cross section for 20MeV 16O+4He
Reaction: 4He(16O,16O)4He
A: 4 16 16 4
Z: 2 8 8 2
Mass(amu): 4.002603 15.994915 15.994915 4.002603
Error(keV): 0.001 0.002 0.002 0.001
Origin:
Status:
Projectile lab energy: 20.000 MeV
CM energy: 4.003 MeV
Particle 3 Particle 4
( scattered ) ( recoil )
Lab Cross Section CM Lab/CM Lab Lab Lab
Angle Lab CM Angle Ratio Energy Angle Energy
(deg) (mb/sr) (deg) (MeV) (deg) (MeV)
0.00 NaN Inf 0.000 NaN 20.000 90.000 0.000
1.00 0.143028E+09 0.572301E+07 4.999 0.040 19.976 87.500 0.024
2.00 0.894079E+07 356425. 10.017 0.040 19.902 84.992 0.098
3.00 0.176669E+07 69982.6 15.072 0.040 19.780 82.464 0.220
4.00 559329. 21951.4 20.186 0.039 19.607 79.907 0.393
5.00 229335. 8887.05 25.382 0.039 19.382 77.309 0.618
6.00 110782. 4221.76 30.690 0.038 19.103 74.655 0.897
7.00 59959.1 2235.75 36.144 0.037 18.768 71.928 1.232
8.00 35299.6 1279.52 41.790 0.036 18.371 69.105 1.629
9.00 22192.2 775.052 47.692 0.035 17.907 66.154 2.093
10.00 14729.2 489.347 53.941 0.033 17.366 63.029 2.634
11.00 10261.1 317.919 60.685 0.031 16.732 59.658 3.268
12.00 7514.20 209.725 68.185 0.028 15.976 55.907 4.024
13.00 5900.47 137.756 77.018 0.023 15.035 51.491 4.965
14.00 5693.43 85.2271 89.184 0.015 13.688 45.408 6.312
Maximum lab scattering angle ( 14.49 deg ) exceeded
________________________________________________________________________________
aida01 4*L spectra - attachments 19-23
channels 0-8 - high stats structure(s) at low energy
channels 9-16 - high energy peak cf. aida04 asic #4 spectra
Merger, Merger stats, TapeServer - attachments 16-18
Started Run 11 with beam ON.
We observe the same pattern of counts in DSSD0 (Top left detector) but not in DSSD1,2,3 (attachment 25). Moving in the left arm with the pneumatic we see a large drop in
the rate on DSSD0 to essentially zero. The beam on the CRYRING monitor appears to disappear.
When we move the right pneumatic IN, we observe an increase in the number of counts in the bottom-left part of the detector. The position is likely to be a mistake in the
strip assignment.
No increase observed in the leakage current. Will try systematically tomorrow.
Beam position monitoring from the CRYRING are shown in attachments 25-27 |
| Attachment 1: Screenshot_from_2024-02-09_12-45-57.png
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| Attachment 2: Screenshot_from_2024-02-09_12-46-32.png
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| Attachment 3: Screenshot_from_2024-02-09_12-46-59.png
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| Attachment 4: Screenshot_from_2024-02-09_12-47-37.png
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| Attachment 5: Screenshot_from_2024-02-09_12-47-59.png
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| Attachment 6: Screenshot_from_2024-02-09_12-48-59.png
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| Attachment 7: Screenshot_from_2024-02-09_12-49-17.png
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| Attachment 8: Screenshot_from_2024-02-09_12-49-39.png
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| Attachment 9: Screenshot_from_2024-02-09_12-50-18.png
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| Attachment 10: Screenshot_from_2024-02-09_12-51-04.png
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| Attachment 11: Screenshot_from_2024-02-09_12-51-48.png
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| Attachment 12: Screenshot_from_2024-02-09_12-52-25.png
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| Attachment 13: Screenshot_from_2024-02-09_12-54-05.png
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| Attachment 14: Screenshot_from_2024-02-09_12-56-04.png
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| Attachment 15: Screenshot_from_2024-02-09_12-56-20.png
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| Attachment 16: Screenshot_from_2024-02-09_12-56-52.png
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| Attachment 17: Screenshot_from_2024-02-09_12-57-06.png
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| Attachment 18: Screenshot_from_2024-02-09_12-57-36.png
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| Attachment 19: Screenshot_from_2024-02-09_13-03-20.png
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| Attachment 20: Screenshot_from_2024-02-09_13-03-38.png
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| Attachment 21: Screenshot_from_2024-02-09_13-03-54.png
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| Attachment 22: Screenshot_from_2024-02-09_13-04-22.png
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| Attachment 23: Screenshot_from_2024-02-09_13-04-59.png
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| Attachment 24: Screenshot_from_2024-02-10_10-07-57.png
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| Attachment 25: 20240209_174604.jpg
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| Attachment 26: 20240209_174705.jpg
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| Attachment 27: 20240209_174718.jpg
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1
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Mon Aug 17 08:16:16 2020 |
TD | CARME Elog |
Test |
|
3
|
Tue Aug 18 17:35:20 2020 |
TD | SAES UHV1400 pin assignment |
Using a digital multimeter confirmed continuity for SAES-supplied
power cable (Amphenol (circular) 6-pin plug to Han 05 plug) for
the following pins
pin A - pin 5
pin F - pin 3
which correspond to the type K chromel/alumel thermocouple contacts
and Neg PSU output connector pins for the thermocouple (e.g. see p.34
of Neg PSU manual). |
| Attachment 1: NEG_POWER_user_manual.pdf
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| Attachment 2: 20200813_121944_(1).jpg
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.jpg.png "20200813_121944_(1).jpg")
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| Attachment 3: 20200813_134548.jpg
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| Attachment 4: RFKIT9904220_(2).pdf
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-0.png "RFKIT9904220_(2).pdf")
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| Attachment 5: RFKIT9905220_(2).pdf
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-0.png "RFKIT9905220_(2).pdf")
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28
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Thu Oct 22 10:39:40 2020 |
TD | Thursday 22 October |
10.40
CARME chamber 2.84e-08mbar
Backing 1.2e-7mbar (Edwards vacuum cart w/RGA)
CARME temps - see attachment 1
vessel 146.62 deg C max diff 21.42 deg C
octagon 27.85 deg C max diff 6.35
SAES HV power modules - see attachments 2-12
14.00
CARME chamber 2.78e-08mbar
Start 4x SAES D2000-10 *NEG* pumps (ion pump OFF) - see attachments 13-18
Ramp 45 mins
Hold 60 mins
225W/550deg C
NEG pumps report temps c. 130 deg C
14.15 ramp
CARME chamber 2.0e-07mbar
Backing 3.3e-07mbar (Edwards vacuum cart w/RGA)
NEG pump temps c. 230-250 deg C
14.30 ramp
CARME chamber 2.34e-07mbar
Backing 4.1e-07mbar (Edwards vacuum cart w/RGA)
NEG pump temps c. 330-350 deg C
14.45 ramp
CARME chamber 4.02e-07mbar
Backing 4.1e-07mbar (Edwards vacuum cart w/RGA)
NEG pump temps c. 450-455 deg C
15.00 hold
CARME chamber 4.56e-07mbar
Backing 5.7e-07mbar (Edwards vacuum cart w/RGA)
NEG pump temps c. 500-505 deg C
output c. 50V, c. 3A, c. 150W
15.20 hold
CARME chamber 4.40e-07mbar
Backing 5.1e-07mbar (Edwards vacuum cart w/RGA)
NEG pump temps c. 530-540 deg C
output c. 160-170W
15.40 hold
CARME chamber 3.46e-07mbar
Backing 4.3e-07mbar (Edwards vacuum cart w/RGA)
NEG pump temps c. 540-545 deg C
output c. 160-170W
15.50 cycle complete
Ramp 45 mins
Hold inf mins
set output 60W
re-start CARME bakeout
set point +120 deg C
15.55 ramp
CARME chamber 5.15e-08mbar
Backing 1.4e-07mbar (Edwards vacuum cart w/RGA)
NEG pump temps c. 350-360 deg C
16.15 ramp
CARME chamber 4.53e-08mbar
Backing 1.5e-07mbar (Edwards vacuum cart w/RGA)
NEG pump temps c. 260-270 deg C
16.17 CARME chamber temperatures - attachment 20 |
| Attachment 1: 20201022_104309.jpg
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| Attachment 2: 20201022_104331.jpg
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| Attachment 3: 20201022_104339.jpg
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| Attachment 4: 20201022_104345.jpg
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| Attachment 5: 20201022_104354.jpg
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| Attachment 6: 20201022_104354.jpg
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| Attachment 7: 20201022_104412.jpg
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| Attachment 8: 20201022_104415.jpg
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| Attachment 9: 20201022_104419.jpg
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| Attachment 10: 20201022_104427.jpg
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| Attachment 11: 20201022_104431.jpg
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| Attachment 12: 20201022_104434.jpg
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| Attachment 13: 20201022_135913.jpg
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| Attachment 14: 20201022_135921.jpg
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| Attachment 15: 20201022_135926.jpg
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| Attachment 16: 20201022_135930.jpg
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| Attachment 17: 20201022_135935.jpg
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| Attachment 18: 20201022_135942.jpg
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| Attachment 19: 20201022_161737.jpg
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31
|
Wed Oct 28 10:41:57 2020 |
TD | Wednesday 28 October |
10.32
CARME chamber 5.8e-12mbar (see attachment 1)
Backing 1.6e-08mbar (Edwards vacuum cart w/RGA)
CARME temps - see attachment 2
All SAES D2000-10 & UHV1400 NEG power OFF
All SAES D2000-10 ion pump OFF
Gate valve open
11.01
All SAES D2000-10 ion pump ON
# V/V presssure/mbar
1 5012/5019 4-8e-11
2 5012 < 8.9e-12
3 5012 < 8.9e-12
4 5012 < 8.9e-12
11.04
CARME chamber 5.7e-12mbar
Backing 1.7e-08mbar (Edwards vacuum cart w/RGA)
12.12
CARME chamber 5.3e-12mbar
Backing 1.7e-08mbar (Edwards vacuum cart w/RGA)
All SAES D2000-10 & UHV1400 NEG power OFF
Gate valve open
All SAES D2000-10 ion pump ON
# V/V presssure/mbar
1 5012 < 8.9e-12
2 5012 < 8.9e-12
3 5012 < 8.9e-12
4 5012 < 8.9e-12
All ion pumps now stabilising wrt V/I/pressure
log (pressure) versus time - see attachment 3
16.00
CARME chamber 4.9e-12mbar - see attachment 4
Backing 1.7e-08mbar (Edwards vacuum cart w/RGA)
All SAES D2000-10 & UHV1400 NEG power OFF
Gate valve open
All SAES D2000-10 ion pump ON - see attachment 5
# V/V presssure/mbar
1 5012 < 8.9e-12
2 5012 < 8.9e-12
3 5012 < 8.9e-12
4 5012 < 8.9e-12
All ion pumps now stabilising wrt V/I/pressure
CARME temps - see attachment 6
Observing pressure transients from 5e-12mbar to c. 6-7e-12mbar which recover in c. 5-10 minutes
21.00 CARME chamber 4.7e-12mbar |
| Attachment 1: 20201028_103204.jpg
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| Attachment 2: 20201028_103638.jpg
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| Attachment 3: 28102020_pump_down.png
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| Attachment 4: 20201028_161049.jpg
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| Attachment 5: 20201028_155823.jpg
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| Attachment 6: 20201028_155940.jpg
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35
|
Wed Nov 25 10:39:37 2020 |
TD | Wednesday 25 November |
10.39
CARME XHV chamber pressure 6.0e-12mbar
Backing 2.1e-08mbar (Edwards vacuum cart w/RGA)
CARME temps - heaters OFF - chamber at ambient
temperature
All SAES D2000-10 & UHV1400 NEG power OFF
All SAES D2000-10 ion pump ON
# V/V presssure/mbar
1 5012 < 8.9e-12
2 5012 < 8.9e-12
3 5012 < 8.9e-12
4 5012 < 8.9e-12
Gate valve open
attachment 1 - analog RGA scan (as found this am)
attachment 2 - scan mode
c. 11.15
AH partially closes gate valve using c. 2 bar air pressure
VCARME XHV chamber pressure increases c. 7e-9mbar immediately
attachment 3 - RGA scan - no obvious change in RGA trends!
attachments 4 & 5 - VAT valve indicators - upper (partially open/closed) and lower (closed)
11.33 CARME XHV chamber pressure 6.6e-9mbar
Backing 2.2e-08mbar (Edwards vacuum cart w/RGA)
All SAES D2000-10 ion pump ON
# V/V presssure/mbar
1 5012 < 8.9e-12
2 5012 < 8.9e-12
3 5012 < 8.9e-12
4 5012 < 8.9e-12
All SAES D2000-10 ion pump OFF
11.40 CARME XHV chamber pressure 5.64e-9mbar
11.46 CARME XHV chamber pressure 5.01e-9mbar
No change in RGA trends!
12.01 CARME XHV chamber pressure 3.78e-9mbar
No change in RGA trends!
12.11 CARME XHV chamber pressure 3.10e-9mbar
12.42 CARME XHV chamber pressure 1.81e-9mbar
Backing 2.4e-08mbar (Edwards vacuum cart w/RGA)
No change in RGA trends!
13.20 CARME XHV chamber pressure 1.06e-9mbar
Backing 2.4e-08mbar (Edwards vacuum cart w/RGA)
No change in RGA trends!
13.36 CARME XHV chamber pressure 8.93e-10mbar
Backing 2.4e-08mbar (Edwards vacuum cart w/RGA)
No change in RGA trends!
13.59 CARME XHV chamber pressure 7.07e-10mbar
Backing 2.5e-08mbar (Edwards vacuum cart w/RGA)
No change in RGA trends!
14.00 Leybold turbo OFF - decelerating
14.30 Leybold turbo OFF - decelerating - 466Hz
CARME XHV chamber pressure 5.62e-10mbar
Backing 2.1e-08mbar (Edwards vacuum cart w/RGA)
No change in RGA trends!
14.40 1x SAES D2000-10 ion pump switched on briefly - settles in c. 10s - pressure < 8.9e-
12mbar
All 4x D2000-10 ion pumps OFF
15.01 Leybold turbo OFF - decelerating - 125Hz
CARME XHV chamber pressure 4.78e-10mbar
Backing 1.4e-08mbar (Edwards vacuum cart w/RGA)
No change in RGA trends!
15.10 Abrupt increase in RGA trends - see attachment 6
Leybold turbo OFF - decelerating - 60Hz
CARME XHV chamber pressure 4.53e-10mbar
Backing 2.6e-08mbar (Edwards vacuum cart w/RGA)
15.19 4x SAES D2000-10 ion pumps ON
RGA record 04.24.00
15.24 see attachment 7 - RGA transient recovering - turbo stopped?
15.10 Leybold turbo OFF - stopped - 0Hz
CARME XHV chamber pressure 4.40e-10mbar
Backing 1.1e-08mbar (Edwards vacuum cart w/RGA)
All SAES D2000-10 ion pump ON
# V/V presssure/mbar
1 5012 < 8.9e-12
2 5012 < 8.9e-12
3 5012 < 8.9e-12
4 5012 < 8.9e-12
16.10 VAT gate valve partially closed
Leybold turbo OFF - stopped - 0Hz
CARME XHV chamber pressure 3.88e-10mbar
Backing 9.8e-09mbar (Edwards vacuum cart w/RGA)
RGA traces recovered to pre-transient levels and stable
All SAES D2000-10 ion pump ON
# V/V presssure/mbar
1 5012 < 8.9e-12
2 5012 < 8.9e-12
3 5012 < 8.9e-12
4 5012 < 8.9e-12 |
| Attachment 1: 20201125_104631.jpg
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| Attachment 2: 20201125_110500.jpg
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| Attachment 3: 20201125_111937.jpg
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| Attachment 4: 20201125_111954.jpg
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| Attachment 5: 20201125_112003.jpg
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| Attachment 6: 20201125_151232.jpg
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| Attachment 7: 20201125_152354.jpg
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36
|
Fri Dec 4 16:49:36 2020 |
TD | Friday 4 December |
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| Attachment 1: 20201204_161412.jpg
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| Attachment 2: 20201204_161400.jpg
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| Attachment 3: 20201204_161354.jpg
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| Attachment 4: 20201204_161348.jpg
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| Attachment 5: 20201204_161340.jpg
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| Attachment 6: 20201204_161313.jpg
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| Attachment 7: 20201204_161259.jpg
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56
|
Fri Sep 3 14:14:40 2021 |
TD | Leybold IE514 manual & calibration data |
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| Attachment 1: 20210903_141201.jpg
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| Attachment 2: Ionivac_Sensors_IE414_IE514.pdf
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119
|
Wed Oct 13 11:59:23 2021 |
TD | [How to] Open COF600 copper wire seals |
Use the M10 jacking points provided top/bottom and
left/right on the upstream and downstream sides of the
flanges - for example see attachments 1 & 2 |
| Attachment 1: 20211013_103806.jpg
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| Attachment 2: 20211013_103800.jpg
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121
|
Wed Oct 13 15:16:12 2021 |
TD | Orientation of 2x 78 way D connector feedthroughs |
Looking downstream
Attachment 1 top right pair
2 bottom right pair
3 bottom left pair
4 top left pair
PB "The long sides of the connectors on the 2 lowest flanges should be next to each other
and the short side of the connectors should be towards the motors."
The orientations of the other flanges do not matter.
'Long' cables to L-R connectors, 'short' cables to U-D connectors. |
| Attachment 1: 20211013_152518.jpg
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| Attachment 2: 20211013_152529.jpg
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| Attachment 3: 20211013_152549.jpg
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| Attachment 4: 20211013_152606.jpg
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129
|
Fri Oct 22 13:11:26 2021 |
TD | MSL type TTT14 assembly drawings & pin assignments |
|
| Attachment 1: C-3434.pdf
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| Attachment 2: C-3517.pdf
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130
|
Fri Oct 22 13:22:48 2021 |
TD | CARME FEE64 adaptor PCB |
|
| Attachment 1: 3D.pdf
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| Attachment 2: Bottom_Ground_Pad.pdf
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| Attachment 3: Flex_Layer_1.pdf
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| Attachment 4: Flex_Layer_2.pdf
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| Attachment 5: Flex_Layer_3.pdf
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| Attachment 6: Flex_Layer_4_(1).pdf
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-0.png "Flex_Layer_4_(1).pdf")
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| Attachment 7: PCB_Bottom.pdf
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| Attachment 8: PCB_Top.pdf
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| Attachment 9: Silkscreen_Top.pdf
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| Attachment 10: Top_Ground_Pad.pdf
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332
|
Mon Feb 28 14:38:15 2022 |
TD | NewMerger statistics |
Screenshots of all NewMerger statistics |
| Attachment 1: Screenshot_from_2022-02-28_15-38-04.png
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| Attachment 2: Screenshot_from_2022-02-28_15-37-57.png
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| Attachment 3: Screenshot_from_2022-02-28_15-37-52.png
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| Attachment 4: Screenshot_from_2022-02-28_15-37-44.png
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| Attachment 5: Screenshot_from_2022-02-28_15-37-32.png
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| Attachment 6: Screenshot_from_2022-02-28_15-37-24.png
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| Attachment 7: Screenshot_from_2022-02-28_15-37-10.png
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| Attachment 8: Screenshot_from_2022-02-28_15-37-03.png
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| Attachment 9: Screenshot_from_2022-02-28_15-36-55.png
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| Attachment 10: Screenshot_from_2022-02-28_15-36-48.png
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| Attachment 11: Screenshot_from_2022-02-28_15-36-39.png
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| Attachment 12: Screenshot_from_2022-02-28_15-36-31.png
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| Attachment 13: Screenshot_from_2022-02-28_15-36-23.png
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| Attachment 14: Screenshot_from_2022-02-28_15-36-16.png
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| Attachment 15: Screenshot_from_2022-02-28_15-36-07.png
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| Attachment 16: Screenshot_from_2022-02-28_15-35-59.png
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| Attachment 17: Screenshot_from_2022-02-28_15-35-51.png
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| Attachment 18: Screenshot_from_2022-02-28_15-35-42.png
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| Attachment 19: Screenshot_from_2022-02-28_15-35-36.png
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| Attachment 20: Screenshot_from_2022-02-28_15-35-26.png
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| Attachment 21: Screenshot_from_2022-02-28_15-35-14.png
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| Attachment 22: Screenshot_from_2022-02-28_15-35-09.png
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| Attachment 23: Screenshot_from_2022-02-28_15-34-52.png
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| Attachment 24: Screenshot_from_2022-02-28_15-34-47.png
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| Attachment 25: Screenshot_from_2022-02-28_15-34-42.png
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| Attachment 26: Screenshot_from_2022-02-28_15-34-35.png
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| Attachment 27: Screenshot_from_2022-02-28_15-34-28.png
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| Attachment 28: Screenshot_from_2022-02-28_15-34-20.png
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| Attachment 29: Screenshot_from_2022-02-28_15-34-12.png
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| Attachment 30: Screenshot_from_2022-02-28_15-34-03.png
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| Attachment 31: Screenshot_from_2022-02-28_15-33-50.png
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| Attachment 32: Screenshot_from_2022-02-28_15-33-45.png
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| Attachment 33: Screenshot_from_2022-02-28_15-33-39.png
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| Attachment 34: Screenshot_from_2022-02-28_15-33-31.png
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| Attachment 35: Screenshot_from_2022-02-28_15-33-24.png
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| Attachment 36: Screenshot_from_2022-02-28_15-33-15.png
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| Attachment 37: Screenshot_from_2022-02-28_15-33-07.png
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386
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Wed Mar 22 16:33:32 2023 |
TD | NIM WR source |
Test of NIM WR source at Edinburgh
Attachment 1 - NIM WR source
NIM module upper SMA - DSO ch 1
NIM module lower SMA - DSO ch 2
Attachment 2
NO SYNC or CLK signals observed.
Noise observed with NIM bin power ON *and* OFF
Attachment 3
NIM WR source in EG&G Ortec NIM bin
... and with the Digilent Zybo board switched ON!
Attacments 4-7
Trigger ch 2
4, 40, 400 & 4000ns/div
Attachment 8
Trigger ch 1
4ns/div |
| Attachment 1: 20230322_155735.jpg
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| Attachment 2: 20230322_160448.jpg
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| Attachment 3: 20230322_160453.jpg
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| Attachment 4: 20230322_181015.jpg
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| Attachment 5: 20230322_181027.jpg
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| Attachment 6: 20230322_181045.jpg
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| Attachment 7: 20230322_181054.jpg
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| Attachment 8: 20230322_180945.jpg
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400
|
Sun May 14 11:55:12 2023 |
TD | Sunday 14 May |
12.44 DSSSD#3 bias -149.95V leakage current -6.448uA temperature +19.7 deg C ( https://web-docs.gsi.de/~lestinsk/tempplot.php )
CRYRING cave lights ON - leakage current measurements @ 60s intervals
6.448
6.449
6.448
6.448
6.449
6.448
6.448
6.448
6.449
6.448
18.24 DSSSD#3 bias -149.95V leakage current -6.442uA temperature + 21.0 deg C ( https://web-docs.gsi.de/~lestinsk/tempplot.php )
CRYRING cave lights ON - leakage current measurements @ 60s intervals
6.441
6.441
6.441
6.441
6.441
6.442
6.442
6.442
6.440
6.441 |
|
401
|
Mon May 15 07:34:22 2023 |
TD | Monday 15 May |
08.35 DSSSD#3 bias -149.95V leakage current -6.418uA temperature +19.6 deg C ( https://web-docs.gsi.de/~lestinsk/tempplot.php )
DSSSD#3 bias OFF |
|
418
|
Thu Jul 13 08:46:44 2023 |
TD | Replacing wire seal |
09.30 CARME chamber status
Edwards scroll pump ON
Edwards Speedivac valves #1 & #2 OPEN
VAT gate valves OPEN
Re-connect Leybold Pirani gauge to local display/control
CARME chamber pressure 2.4mbar
Scroll pump should be able to achieve < 0.1mbar - indicates significant leak
Davide will first check bolt torques for all flanges opened during most recent vacuum cycle
12.05 Additional torque did not resolve problems
ML test COF600 seal with isopropanol and observed increased chamber pressure
Will open COF600 seal after lunch
13.55 COF600 seal removed - one section marked by Kapton tape shows some distortion and a burr on the inner diameter - see attachments 1 & 2.
ML speculated that perhaps the seal was lightly too long and a section of circumference was forced outwards?
Vacuum surfaces cleaned with isopropanol and tissues - red/brown discoloration probably indicating copper observed
14.30 New COF600 seal installed, flanges closed, bolts finger tight, bolts then systematically torqued in small increments
COF600 torques finger tight, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160Nm x2
DN100 flanges doenstream finger tight, 8, 16, 24Nm
16.40 Start scroll pump and slowly rough chamber
18.00 Roughing CARME chamber pressure flatlines c. 30mbar indicating a large leak.
ML ran some isopropanol around COF600 flange and observed response in roughing pressure of c. 0.2-0.3mbar at c. 30mbar which appears to confirm COF600 is leaking.
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| Attachment 1: 20230713_135351.jpg
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| Attachment 2: 20230713_135416.jpg
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419
|
Fri Jul 14 08:27:17 2023 |
TD | CARME open - inspecting seal |
09.20 CARME chamber at atmospheric pressure as expected.
Will open CARME chamber and inspect COF600 wire seal for similar (or other) issues to the seal removed yesterday. One possibility is that the COF600 flange
surfaces/structures are misaligned and part of seal is 'escaping' the seal zone. Given the flanges close easily the misalignment would have to be small.
13.30 Observations
The bolts on the upstream feet of the far detector chamber are all loose and have probably been so for some time
Based on measurements with calipers and the insertion of shims into the *radial* gap between COF600 flange surfaces the COF600 flanges may be misaligned and rotated
transversely by a fraction of a millimeter. The challenge is that the chamber is not designed for fine transverse adjustments and it is not easy to measure the changes.
The Pfeiffer recommended procedure for closing COF seals is to start tightening bolts *diametrically* and then to tighten sequentially
https://www.pfeiffer-vacuum.com/en/know-how/mechanical-components-in-vacuum/connections/detachable-flange-connections/cof-flanges/
The plan
Adjust position of far detector chamber and secure upstream feet bolts
Close COF600 flange using Pfeiffer recommended procedure
Today is Friday so it will probably be Monday before we can pump the CARME chamber
13.50 Another view
Grosmontage also inspected the COF600 seal this afternoon. They said that it was important that the seal should be installed under tension to ensure that it remained
in position as the flanges were closed and the bolts begin to be tightened. They think the seals are a little too large in circumference but that they can shorten one on
Monday morning. |
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Mon Jul 17 08:45:11 2023 |
TD | Closing CARME again |
Grosmantage are scheduled to arrive 10.00 to inspect COF600 seals and their fit to the COF600 flange. They may decide to adjust the seals so that they fit the flange
under
tension.
Once Grosmontage are satisfied with the seal and its fit we can close the CARME chamber and start pumping down.
Attachment 1 - photo of bakeout tent parts including those adapted/modified by Davide.
18.40 Grosmontage were re-tasked this morning.
Davide, Omer, Cosmas checked alignment of COF600 male and female flanges.
4x COF600 seals were checked - for some seals we observed wave over a ~ 10cm section of the circumference and/or surface scratches/roughness.
Also observed that COF600 seals appeared to be too large - consequently the wire seal would be seated well ( i.e. in contact with the flange surface )
for the majority of the circumference but would lift from flange surface for part(s) of the circumference.
The fourth COF600 seal seated well over all of the circumference and we decided to proceed with closing the chamber.
COF600 flange bolts tightened sequentially 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160Nm.
ML roughed CARME chamber slowly ( < 1mbar/s ) to protect Be window. Turbo started at 1.3mbar. Pirani gauge indicated e-3 mbar range when turbo at speed.
18.53 IE514 gauge ON pressure 4.05e-5mbar.
19.10 Pirani 1.42e-3 mbar IE514 3.02e-5 mbar |
| Attachment 1: 20230717_093106.jpg
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