| ID |
Date |
Author |
Subject |
|
13
|
Sun Jul 31 13:43:56 2016 |
Sarah | Alpha spectra |
Pulser set to 100 pps.
Shaping amp:
Gain: 1x1.0x50
Tau: 2 us
Negative polarity.
|
| Attachment 1: DEED0_alpha_spec_pulser.Spe
|
$SPEC_ID:
No sample description was entered.
$SPEC_REM:
DET# 1
DETDESC# ERUDITE Easy-MCA-8k SN 13196238
AP# Maestro Version 7.01
$DATE_MEA:
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| Attachment 2: DEED5_alpha_spec_pulser.Spe
|
$SPEC_ID:
No sample description was entered.
$SPEC_REM:
DET# 1
DETDESC# ERUDITE Easy-MCA-8k SN 13196238
AP# Maestro Version 7.01
$DATE_MEA:
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| Attachment 3: DEED15_alpha_spec_pulser.Spe
|
$SPEC_ID:
No sample description was entered.
$SPEC_REM:
DET# 1
DETDESC# ERUDITE Easy-MCA-8k SN 13196238
AP# Maestro Version 7.01
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| Attachment 4: EFED9_alpha_spec_pulser.Spe
|
$SPEC_ID:
No sample description was entered.
$SPEC_REM:
DET# 1
DETDESC# ERUDITE Easy-MCA-8k SN 13196238
AP# Maestro Version 7.01
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| Attachment 5: PHDI_alpha_spec_pulser.Spe
|
$SPEC_ID:
No sample description was entered.
$SPEC_REM:
DET# 1
DETDESC# ERUDITE Easy-MCA-8k SN 13196238
AP# Maestro Version 7.01
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|
12
|
Thu Jul 28 16:00:43 2016 |
Sarah | List of to-dos |
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.
|
|
11
|
Wed Jul 27 13:20:53 2016 |
Sarah | Gafchromic images |
|
| Attachment 1: Gafchromic_scan_photos.pdf
|
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| Attachment 2: 20160725_180604.jpg
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| Attachment 3: 20160726_153323.jpg
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| Attachment 4: New_Doc_19_1_1469601914249.jpg
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| Attachment 5: New_Doc_19_2_1469601914138.jpg
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| Attachment 6: New_Doc_19_3_1469601913934.jpg
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10
|
Fri Oct 16 16:11:41 2015 |
Sarah Lonsdale | 09/10/15 Photos of detectors (reversed dE wiring) and upper level frame for future set up, leakage current |
Leakage before take down:
de 0.07 micro A
E 0.47 micro A |
| Attachment 1: 2015-10-09_09.16.16.jpg
|
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| Attachment 2: 2015-10-09_09.16.22.jpg
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| Attachment 3: 2015-10-09_09.29.23.jpg
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| Attachment 4: 2015-10-09_09.29.35.jpg
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| Attachment 5: 2015-10-09_09.30.02.jpg
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9
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Fri Oct 16 16:01:41 2015 |
Sarah Lonsdale | 08/10/15 Removed source and sample, leakage current check |
Removed source and removed Li sample for blank frame test
Leakage
DE 0.06micro A
E 0.41 micro A
DAQ
56.25 sample rate all except EBED 5,6,7 |
|
8
|
Fri Oct 16 15:56:01 2015 |
Sarah Lonsdale | 07/10/15 Alpha source in, change to pulser delay |
Alpha source in - containing 148Gd, 241Am, 239Pu, 244Cm (4x 1kBq)
Leakage on arrival
dE 0.08microA , 19V
E 0.48microA 132V
At leaving
dE 0.08 micro A
E 0.41 micro A
Pulser to 20ms (2015-10-07_13.58.08.jpg)
DAQ:
EBED 5,6,7 have post sample 16382
Increased further at 4pm - 16000+ post sample for 225 samples
|
| Attachment 1: 2015-10-07_13.58.08.jpg
|
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| Attachment 2: 2015-10-07_09.53.40.jpg
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| Attachment 3: 2015-10-07_09.54.47.jpg
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| Attachment 4: 2015-10-07_09.55.55.jpg
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| Attachment 5: 2015-10-07_09.59.09.jpg
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| Attachment 6: 2015-10-07_14.07.55.jpg
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7
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Fri Oct 16 15:41:14 2015 |
Sarah Lonsdale | 06/10/15 Changes to DAQ and pulser settings |
Pulser out of 5,6,7 EFED- extended to 32ms
Changed full scale on ADC to 0.2V,
Offset changed by factor of 10.
Zero suppression on, de -3mV thresh
E +-5mV thresh
Post sample 4096
5pm increased post sample for spd-02886 to 8192 as higher sample rate due to pick up.
Corrected EBED 4 offset.
(Again, all DAQ settings also recorded to the nToF erunbook)
Changed pulser to 13ms. |
| Attachment 1: 2015-10-06_delay.jpg
|
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| Attachment 2: 2015-10-06_trig.jpg
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6
|
Fri Oct 16 15:36:13 2015 |
Sarah Lonsdale | 06/10/15 Leakage, dE signal problem solving and external pulser trigger |
Leakage tues am
0.03 microA dE
0.52 microA E
Before leaving at 11.30am or so-
Bias dE up to 20V, leakage to 0.07microA
E has 0.51 microA
Problem solving dE signals...
SIG l6d6 a has signal of 600mV
SIG 24 has signal of 500mV
White noise is comparable, but transient ringing on l6d6 could indicate higher capacitance
Testing dE for signal with alpha source- but removed before continuing run.
dE sees particles after rotating ribbon by 180 degrees (abnormal detector)
External pulser triggering (2015-10-06_11.30.jpg )
Pulsar trigger, +2.5V external from proton pulse (10ms before beam), lasts 1ms (width).
Convert pulse input from TTL to NIM to go into delay (15ms).
Start delay in dual timer, then output to trigger pulser (TTL) |
| Attachment 1: 2015-10-06_10.04.06.jpg
|
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| Attachment 2: 2015-10-06_10.35.28.jpg
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| Attachment 3: 2015-10-06_10.37.10.jpg
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| Attachment 4: 2015-10-06_10.37.58.jpg
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| Attachment 5: 2015-10-06_11.06.23.jpg
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| Attachment 6: 2015-10-06_11.30.jpg
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5
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Tue Oct 13 21:04:49 2015 |
Claudia Lederer | Photos of Test Setup 5-10 October 2015 |
some photos in high resolution of the test setup 5-10 October 2015 |
| Attachment 1: DSC00042.JPG
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| Attachment 2: DSC00048.JPG
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| Attachment 3: DSC00056.JPG
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| Attachment 4: DSC00065.JPG
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4
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Mon Oct 12 12:07:24 2015 |
Sarah Lonsdale | 05/10/15 Changes to DAQ settings |
Note that detailed DAQ information available from project-ntof.cern.ch erunbook ear2.
As a rough guide: 6/7 mV per MeV
5mV thresh back side E, -5mV front E
-5mV dE
Implemented from Run 203388
From Run 203389
-7mV in Deed 8&9, EFED
+7mV in EBED
Run 203390
Thresholds back to -6mV for deed 8&9
Gamma flash ends at 70micro sec, corresponds to neutron energy of ~200keV... |
|
3
|
Mon Oct 12 12:04:51 2015 |
Sarah Lonsdale | 05/10/15 Photo of detector distances and layout |
Fairly self explanatory, note that images with time-stamps before 13.08.29 were taken before fitting the o-ring on the flange and therefore lateral positions will be different to photos after 13.08.29. Individual detector heights were not changed. |
| Attachment 1: 2015-10-05_13.08.29.jpg
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| Attachment 2: 2015-10-05_13.08.45.jpg
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| Attachment 3: 2015-10-05_13.08.52.jpg
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| Attachment 4: 2015-10-05_13.09.02.jpg
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| Attachment 5: 2015-10-05_12.55.05.jpg
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| Attachment 6: 2015-10-05_12.55.27.jpg
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| Attachment 7: 2015-10-05_12.55.40.jpg
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| Attachment 8: 2015-10-05_13.12.07.jpg
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2
|
Mon Oct 12 11:50:52 2015 |
Sarah Lonsdale | 05/10/15 Pulser, Wiring information and DAQ initial set up |
600mV in 50ohm coax with 25 hz pulser (positive signal) - see 2015-10-05_15.19.54.jpg and 2015-10-05_15.22.46.jpg
Leakage currents on detectors:
In air
10v: 0.03 micro amp det 1 leakage -dE
132v: 0.47micro amp det 2 leakage- E det
In vacuum
DE 0.04 micro amp
E 0.46 micro amp
Same size of signal at ADC hence 50 ohms coaxial.
The following channel explanations refer to cables at control area (not vault) see (2015-10-05_15.19.54.jpg) for full wiring information.
dE det= DEED 0 to -2V full scale, Lower limit 1800mV, Threshold 0V, thresh neg, pre 1024, post 2048, 20ms window, sample rate 225 MS/s
- L6D6 A = de 4
- L6D6 B = de 5
- L6D6 C = de 6
- L6D6 D = de 7
- LaBr 3 = de 8
- 21 = de 9
E det front= EFED 0 to -2V full scale, Lower limit 1800mV, Threshold 0V, thresh neg, pre 1024, post 2048, 20ms window, sample rate 225 MS/s
- 10 = Ef 3
- 12 = Ef 4
- 13 = Ef 5
- 14 = Ef 6
- 15 = Ef 7
E det back= EBED 0 to +2V full scale, Lower limit -200mV, Threshold 0V, thresh pos, pre 1024, post 2048, 20ms window, sample rate 225 MS/s (except EBED 5,6,7 which MUST be 900MS/s due to beam pick up signal)
- 16 = Eb 3
- 18 = Eb 4
- 20 = Eb 5
- 38 = Eb 6
- 40 = Eb 7
Run number 203385 on https://project-ntof.web.cern.ch/project-ntof/eRunbookEAR2.php |
| Attachment 1: 2015-10-05_15.19.54.jpg
|
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| Attachment 2: 2015-10-05_15.20.24.jpg
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| Attachment 3: 2015-10-05_15.22.39.jpg
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| Attachment 4: 2015-10-05_15.22.46.jpg
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1
|
Mon Oct 12 11:27:02 2015 |
Sarah Lonsdale | 05/10/15 - Set up notes |
20 micron (see 2015-10-05_12.46.59.jpg for detailed information) and 500 micron detectors
Testing preamps using pulser through common wire to both sets of preamps (see 2015-10-05_13.12.01.jpg).
64 x 14mA pos signals 15V
64 x 4mA neg signals 15V (see 2015-10-05_12.02.00.jpg for example on oscilloscope)
Sample has 105 microgram Li-6 (LiF - 95% enriched) 105 micron thick (2015-10-05_12.12.15.jpg is Li-6 side up, 2015-10-05_12.12.26.jpg is Li-6 side down... do not mix up!)
dE uses 22, 23 on ribbon connector, E 24, 25
dE from bias supply 2, E from bias 1
de and E pos signals needed to be inverted using jumpers. de negs not used, only 16ch (see 2015-10-05_14.59.12.jpg)
de first and last (0,15) are noisy- don't use. E detector ch 0 doesn't work.
Channels used dE 4-9, E(pos) 3-7 and E(neg) 3-7 (see 2015-10-05_15.11.37.jpg and 2015-10-05_15.11.44.jpg)
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| Attachment 1: 2015-10-05_12.46.59.jpg
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| Attachment 2: 2015-10-05_12.02.00.jpg
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| Attachment 3: 2015-10-05_12.12.15.jpg
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| Attachment 4: 2015-10-05_12.12.23.jpg
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| Attachment 5: 2015-10-05_13.12.01.jpg
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| Attachment 6: 2015-10-05_14.59.12.jpg
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| Attachment 7: 2015-10-05_15.11.44.jpg
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| Attachment 8: 2015-10-05_15.11.37.jpg
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