 Wed Aug 6 11:20:52 2025, Selin, Pulser Test 
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The pulser test was performed with a frequency of 500 Hz and with voltage settings of: 2V, 1.6V, 1.2V, 0.8V, 0.6V, 0.4V, 0.3V, 0.2V, 0.1V, 0.05V, 0.025V.
The run was started with calibration settings and then the voltage was changed every 2.5-3 minutes.
From the attached plots, it can be seen that everything is as expected. This means that the pulser multipolarity is consistent with front and |
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Mon Oct 12 11:27:02 2015, Sarah Lonsdale, 05/10/15 - Set up notes 8x
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| 20 micron (see 2015-10-05_12.46.59.jpg |
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Mon Oct 12 11:50:52 2015, Sarah Lonsdale, 05/10/15 Pulser, Wiring information and DAQ initial set up
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| 600mV in 50ohm coax with 25 hz pulser (positive signal) - see 2015-10-05_15.19.54.jpg |
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Mon Oct 12 12:04:51 2015, Sarah Lonsdale, 05/10/15 Photo of detector distances and layout 8x
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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. |
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Mon Oct 12 12:07:24 2015, Sarah Lonsdale, 05/10/15 Changes to DAQ settings
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Note that detailed DAQ information available from project-ntof.cern.ch erunbook ear2.
As a rough guide: |
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Fri Oct 16 15:36:13 2015, Sarah Lonsdale, 06/10/15 Leakage, dE signal problem solving and external pulser trigger 6x
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Leakage tues am
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Fri Oct 16 15:41:14 2015, Sarah Lonsdale, 06/10/15 Changes to DAQ and pulser settings
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Pulser out of 5,6,7 EFED- extended to 32ms
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Fri Oct 16 15:56:01 2015, Sarah Lonsdale, 07/10/15 Alpha source in, change to pulser delay 6x
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Alpha source in - containing 148Gd, 241Am, 239Pu, 244Cm (4x 1kBq)
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Fri Oct 16 16:01:41 2015, Sarah Lonsdale, 08/10/15 Removed source and sample, leakage current check
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Removed source and removed Li sample for blank frame test
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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
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Leakage before take down:
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Wed Jul 27 13:20:53 2016, Sarah, Gafchromic images 6x
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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? |
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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 |
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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 |
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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 |
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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***
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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. |
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Wed Aug 3 09:48:31 2016, Sarah, EFED10 alpha calibration checks
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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 |
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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 |