Run 3
DCRC v2 test
Charge channel test
Phonon channel test
After fixing the readout vi, I managed to get the modulation curves on all 4 channels. The modulation depths are roughly same as DCRC v1: A and D are about 200mV, and B and C are about 450mV. After that I could not lock the squid nor do any further measurements. The board was sent to Fermilab on May 10 to do a further check.
DCRC v1
Superconducting resistance by IbIs
The table below can also be found in the run diary
| Senser | RSC (mΩ) | RN (Ω) |
| A | 1.6 | 1.4 |
| B | 2.5 | 1.8 |
| C | | |
| D | 2.3 | 1.8 |
Results from Run 2 can be found here.
The superconducting resistance is considerably lower than the results from CWRU or UCB. Vuk suggested the discrepancy may be because we didn't know the exact phonon channel gain.
Ba-133 pulse data
6 hours of Ba-133 data was taken after baking the detector for 0.5 hour. I posted a few plots below.
Charge overall calibration and crosstalk correction is done, position correction is not.
The charge spectrum has a lower energy resolution and is different from
Soudan .
Loss of neutralization happened at 1.5e4 sec (4 hours) ?
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| Cut: No cut |
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| Cut: No cut |
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| Cut: Pt > 5 & inrange(Xdel, -50, 50) & inrange(Ydel, -50, 50) |
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| Cut: 0.93 < Qpart & Qpart < 1.07 & 5 < Qsum & Qsum < 400 |
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| Cut: Pt>5 & inrange(Xdel, -50, 50) & inrange(Ydel, -50, 50) & cQchi2 |
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| Cut: Pt>5 & inrange(Xdel, -50, 50) & inrange(Ydel, -50, 50) & cQchi2 |
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| Cut: No cut |
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| Cut: 5 < Qsum & Qsum < 200 & cQchi2 & cQin |
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| Cut: 5 < Qsum & Qsum < 200 & cQchi2 & cQin |
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| Cut: cQin & cQchi2 & 5<Qsum & Qsum<100 |
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| Cut: cQin & cQchi2 & 5<Qsum & Qsum<100 |
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| Cut: cQin & cQchi2 & 5<Qsum & Qsum<100 |
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| Cut: cQin & cQchi2 & 5<Qsum & Qsum<100 |