Thu Oct 6 09:34:30 2022, Claudia, Test setup Photos and cabling    
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Setup 5.10.22
dE 20 um (ID 2837-33) and 494 um double sided (ID 1194-9)
46 channels (2 connectors missing)
LiF4 in beam
dE: Big flat cables from preamp 22 and 23 into 1A and 1B
E: from preamp 24+25 go into 2A, 2B and 3A 3B
LEMO converter box: Cable 1: dE
Cable 3: E n+n
unlabeled cable: E p+n
E detector voltage: -133 V, leakage current -0.53 micro-Amp
dE detector voltage -22 V, leakage current -0.03 micro-Amp
For the E detector one of the edge p+n strip bond-wires is suspected broken. |
Thu Oct 6 09:28:33 2022, Claudia, Items to be replaced for next run
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Missing/broken items identified
- long rails for fixing chamber on support
- vacuum valve (ours is broken)
- at least 2 lemo - BNC converters
- short M3 screws (photo) |
Thu May 26 09:20:32 2022, Nick / Claudia, Inventory of Items at n_TOF for (n,cp) experiments 
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Detectors currently in the boxes:
2x MSL type W1(SS)-50, 2902-4 (53um), 2940-6 (55um)
1x MSL type W1(SS)-20 2837-33 (20um)
1x MSL type W1(DS?) 1230-10 (500 or 300 um)
1x MSL type W1(DS)-500 1194-9 (494um)
Three aluminium crates contain 26Al(n, alpha) kit from EAR2, and was in the barracks (building 6547) near detector lab by EAR1 entrance. A list is attached and photos can be found on Dropbox:
https://www.dropbox.com/sh/68k1xove2zr1bmj/AADKvN8wR_Ia2EwZMOXZqdMCa?dl=0 |
Fri Sep 9 10:01:18 2016, Sarah, Leakage currents 09.09.16
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EFED 0.04uA
DEED 0.05uA
PHDI 0.13uA |
Fri Sep 2 12:03:40 2016, Sarah, SPD card changed
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14 bit card replaced for DEED 9-12, to prevent issue with pulser arriving before gamma flash. |
Fri Sep 2 12:01:57 2016, Sarah, Leakage currents 02.09.16
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E 0.03
dE 0.05
PHDI 0.12
Check on PHDI pulser width:
205170 (first in beam run) - 1.1% FWHM (at 8275 ch)
205439 (01/09/16) - 1.0% FWHM (at 8008 ch)
Seems to be holding up OK at present. |
Tue Aug 23 15:34:38 2016, Claudia, Leakage currents 23.08.16
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E = 0.03uA
dE = 0.04uA
PHDI = 0.09uA
- Monitor PHDI - increasing slowly... |
Wed Aug 17 15:10:05 2016, Sarah, Leakage currents 12.08.16
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E = 0.03uA
dE = 0.04uA
PHDI = 0.06uA
- Monitor PHDI - increasing slowly... |
Thu Aug 11 08:19:37 2016, Sarah, Leakage currents 10.8.16
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At lunchtime (12.45)
E = 0.03 uA
dE = 0.04 uA
PHDI = 0.06 uA |
Tue Aug 9 15:57:52 2016, Sarah, Leakage currents 09.08.16
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Morning - 9am
E= 0.03uA
dE= 0.04uA
PHDI= 0.06uA
Afternoon - 4.30pm
E=0.03uA
dE= 0.03uA
PHDI=0.05uA
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Mon Aug 8 11:02:13 2016, Sarah, Leakage currents 08.08.16
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E 0.03 uA
dE 0.04 uA
PHDI 0.05 uA
Boron target 1 towards PHDI and Boron target 3 towards dE-E.
Mylar target gluing in electronics lab. |
Wed Aug 3 14:48:09 2016, Sarah, Leakage currents 02.08 - 03.08
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02.08:
dE = 0.03 uA
E = 0.03 uA
PHDI = 0.04 uA
03.08:
dE = 0.03 uA
E 0.04 uA
PHDI = 0.04 uA |
Wed Aug 3 09:48:31 2016, Sarah, EFED10 alpha calibration checks
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EFED10: (1 bin = 2 ch)
Pulser (DAQ):
- Centroid = 5396.8(6) ch
- FWHM = 41(1) ch = 0.7%
Pulser (Maestro):
- Centroid = 4042 ch
- FWHM = 82 ch = 1.9%
148Gd (DAQ):
- Centroid = 2215(1) ch
- FWHM = 57(9) ch = 2.6%
148Gd (Maestro):
- Centroid = 1722 ch
- FWHM = 30 ch = 1.7%
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Tue Aug 2 08:14:26 2016, Sarah, Leakage currents spreadsheet (26/07- 01/08)
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Steady for dE, E. Possibly rising on PHDI- monitor closely. |
Sun Jul 31 15:56:32 2016, Sarah, DEED16 Alpha calibration checks (205169)
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***note that DEED 16 was on old sampling rate for 205168- so use next run, also DEED 9-12 not plugged in***
DEED16: (1 bin = 2 ch)
Pulser (DAQ):
- Centroid = 5347(3) ch
- FWHM = 89(7) ch = 1.7%
Pulser (Maestro):
- Centroid = 4279 ch
- FWHM = 166 ch = 3.9%
*** take the following with a pinch of salt- low stats (top of peak in DAQ = 4 counts)
148Gd (DAQ):
- Centroid = 1948 ch
- FWHM = 138 ch = 7%
148Gd (Maestro):
- Centroid = 1586 ch
- FWHM = 11 ch = 0.7% |
Sun Jul 31 15:02:57 2016, Sarah, DEED6 Alpha calibration checks (205168)
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DEED6: (1 bin = 2 ch)
Pulser (DAQ):
- Centroid = 5145.6(6) ch
- FWHM = 51.4(1) ch = 1%
Pulser (Maestro):
- Centroid = 4042 ch
- FWHM = 137 ch = 3.3%
148Gd (DAQ):
- Centroid = 1980(1) ch
- FWHM = 64(2) ch = 3.2%
148Gd (Maestro):
- Centroid = 1564 ch
- FWHM = 61 ch = 3.9% |
Sun Jul 31 14:32:34 2016, Sarah, DEED1 Alpha calibration checks (205168)
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DEED1: (rebin x2 -> 1 bin = 4 ch)
Pulser (DAQ):
- Centroid = 5000(1) ch
- FWHM = 71(5) ch = 1.4%
Pulser (Maestro):
- Centroid = 4008 ch
- FWHM = 148 ch = 4%
148Gd (DAQ):
- Centroid = 1880(1) ch
- FWHM = 89(2) ch = 4.7%
148Gd (Maestro):
- Centroid = 1524 ch
- FWHM = 67 ch = 4.4%
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Sun Jul 31 13:43:56 2016, Sarah, Alpha spectra    
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Pulser set to 100 pps.
Shaping amp:
Gain: 1x1.0x50
Tau: 2 us
Negative polarity.
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Thu Jul 28 16:00:43 2016, Sarah, List of to-dos
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Process alpha data
- Compare pulser width and alpha width to calibration spectra (shaping amp with 1us and gain 50x)
- Does photodiode data process OK or is it a problem with the oscillations?
Process LiF data
- Any pile up issues? Problems with gamma flash?
Online monitoring:
- Check leakage every few days, check lab temp.
- Check alpha peaks of 26Al contaminants - Gd, B.
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Wed Jul 27 13:20:53 2016, Sarah, Gafchromic images 6x
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