Difference between revisions of "Noteable events list for d2n"
From Hall A Wiki
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| − | + | ==Experiment Changes== | |
| − | + | ===Beam Pass Changes=== | |
| + | *February [[Media:Feb_beam_energy.png]] | ||
| + | |||
| + | ===Major Changes=== | ||
| + | *02/05/09 | ||
| + | **18:05: 3He cell SAMANTHA and reference cell GMA installed | ||
| + | |||
| + | *02/07/09 | ||
| + | **18:43-21:52: BB CAMAC crate down | ||
| + | **22:29: BB TDC delay cables fixed(~360ns) | ||
| + | **22:29: BB Cer output widths on discriminator set to 100ns | ||
| + | |||
| + | *02/08/09 | ||
| + | **15:39: Oven temp controller replaced | ||
| + | **16:00: DAQ set to 1DAQ | ||
| + | **17:50: Ethane/Argon mix on pressure regulator at 1psi | ||
| + | |||
| + | *02/09/09 | ||
| + | **17:03: BB MWDC gas system pressures returned (Ethane/Argon) | ||
| + | |||
| + | *02/10/09 | ||
| + | **06:51: LHRS polarity set to + | ||
| + | **09:44: BB sieve in | ||
| + | **10:29: BB Wire Chamber thresholds changed C1=3.9V,C2=4.8V,C3=4.8V | ||
| + | **11:17: T6:threshold_BB -s BB_Sh -120mV->450MeV | ||
| + | **11:17: T1:threshold_BB -s BB_Sh_2 -80V->300MeV | ||
| + | **11:31: PMTs put in flash ADCs | ||
| + | **14:10: seive out | ||
| + | **14:16: PMTs back in V792 ADC | ||
| + | **16:35: RHRS DAQ restored for pvdis parasites | ||
| + | **17:55: BB T1,T6 thresholds set to -10mV | ||
| + | **18:15: BB polarity set to positive | ||
| + | **19:08: BB sieve in | ||
| + | **20:18: Threshold for BB_Sh=-0.120V BB_Sh_2=-0.080V BB_cer=-0.070V | ||
| + | **20:58: BB Cer T2 timing,outputs of AND units normalized to 150ns | ||
| + | **20:58: BB Cer T2 timing, output of P706 shortened to 50ns | ||
| + | **21:33: Compton HV = -1800V | ||
| + | |||
| + | *02/11/09 | ||
| + | **03:25: Sieve out | ||
| + | **08:20: BB and LHRS polarity changed to negative | ||
| + | **09:56: DAQ put in 2DAQ mode | ||
| + | **09:58: T3 T4 trigger cables unplugged from BB | ||
| + | **11:17: 0.3x attenuuator added to photon signal going into DAQ | ||
| + | **15:18: BB MWDC threshold change | ||
| + | ***front = 3.898 | ||
| + | ***mid = 4.800 | ||
| + | ***back = 4.800 | ||
| + | **22:56: Sync problems in ROC4, slot 18 (1875 TDC) missing gates in buffer mode | ||
| + | |||
| + | *02/12/09 | ||
Revision as of 17:42, 28 May 2009
Experiment Changes
Beam Pass Changes
- February Media:Feb_beam_energy.png
Major Changes
- 02/05/09
- 18:05: 3He cell SAMANTHA and reference cell GMA installed
- 02/07/09
- 18:43-21:52: BB CAMAC crate down
- 22:29: BB TDC delay cables fixed(~360ns)
- 22:29: BB Cer output widths on discriminator set to 100ns
- 02/08/09
- 15:39: Oven temp controller replaced
- 16:00: DAQ set to 1DAQ
- 17:50: Ethane/Argon mix on pressure regulator at 1psi
- 02/09/09
- 17:03: BB MWDC gas system pressures returned (Ethane/Argon)
- 02/10/09
- 06:51: LHRS polarity set to +
- 09:44: BB sieve in
- 10:29: BB Wire Chamber thresholds changed C1=3.9V,C2=4.8V,C3=4.8V
- 11:17: T6:threshold_BB -s BB_Sh -120mV->450MeV
- 11:17: T1:threshold_BB -s BB_Sh_2 -80V->300MeV
- 11:31: PMTs put in flash ADCs
- 14:10: seive out
- 14:16: PMTs back in V792 ADC
- 16:35: RHRS DAQ restored for pvdis parasites
- 17:55: BB T1,T6 thresholds set to -10mV
- 18:15: BB polarity set to positive
- 19:08: BB sieve in
- 20:18: Threshold for BB_Sh=-0.120V BB_Sh_2=-0.080V BB_cer=-0.070V
- 20:58: BB Cer T2 timing,outputs of AND units normalized to 150ns
- 20:58: BB Cer T2 timing, output of P706 shortened to 50ns
- 21:33: Compton HV = -1800V
- 02/11/09
- 03:25: Sieve out
- 08:20: BB and LHRS polarity changed to negative
- 09:56: DAQ put in 2DAQ mode
- 09:58: T3 T4 trigger cables unplugged from BB
- 11:17: 0.3x attenuuator added to photon signal going into DAQ
- 15:18: BB MWDC threshold change
- front = 3.898
- mid = 4.800
- back = 4.800
- 22:56: Sync problems in ROC4, slot 18 (1875 TDC) missing gates in buffer mode
- 02/12/09
