Difference between revisions of "HRRL 7-30-09"
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| Line 156: | Line 156: | ||
tasks: | tasks: | ||
| − | hook up TDC | + | hook up TDC done, only for metalica |
| − | plastika | + | plastika, done, works |
| − | make collimator bigger | + | make collimator bigger, done |
GEM readout | GEM readout | ||
Latest revision as of 12:41, 31 July 2009
Default HRRL running Conditions
| Pulse Width | Rep Rate | Energy | |
| 8 mA | 100 ns | 1 Hz | 3 MeV |
cable names
| CH ID | Description |
| 2223A1 | Front Scintillator |
| 2223A2 | Rear Scintilaltor |
| 2223A3 | ADC Gate From counting house to Experimental Cell |
| 2223A4 | TDC start pulse from counting house to experimental cell |
| 2223A5 | Coincidenc between front + rear Scint + Gun pulser to scaler channel 8 |
| 2223A6 | Metalica sense wire 4 |
| 2223A7 | G0 MCLK for |
| 2223A8 | Plastica sense wire 4 |
| 2223A9 | scaler channel 4 |
| 2223A10 | Front scintillator to ADC |
| 2223A11 | scaler channel 1 |
| 2223A12 | DAQ trigger |
HV Cables on DCs: Sense-A2, Guard-A3 and Field-A4
| HV Chan | Description |
| N470 Ch 0 | Drift Chamber Sense |
| N470 Ch 1 | Drift Chamber field |
| N470 Ch 2 | Drift Chamber guard |
| N470 Ch 3 | nothing |
| N471 Ch A | R1 drift |
| N471 Ch B | R1 foil |
| N471 Ch A | Front and read PMTs |
HV cables on scintillators: Front && rear PMTs-A8. Hv settings 1150 Volts(works). In counting room front-A1(BNC) and rear-A2(BNC).
Plan: A3 should be gate. A4 - Start for TDC. A12-trigger.
HV Settings on drift chambers S:F:G=1400:-700:980
Setup TIming
Accelerator sends the Gun gate to HRRL counting room on channel BM
The accelerator Gun gate starts our Stanford pulse generator.
- The Stanford pulse generator outputs 2 pulses
- one pulse is for the ADC gate and G1 trigger for V1495
- The second pulse create a trigger for the DAQ
Singles scaler counts
| Run Number | Distance to Metallica's Feedthrough tip (cm) | Metalica scaler counts scaler ch 4 | Plastika Scaler Counts scaler ch 1 | Rear PMT + Front PMT + Gun Pulse Counts Scaler Ch 8 | HV S:F:G | Discriminator (mV) | Metalica counts/PMT+Gun pulse |
| 1 | 0 | 162 | 0 | 1004 | 1400:-700:980 | 50 | 0.16 |
| 2 | 19.05 (middle) | 190 | 0 | 1146 | 1400:-700:980 | 50 | 0.17 |
| 3 | 19.05 (middle) | 38 | 0 | 1072 | 0:0:0 | 50 | 0.04 |
| 4 | 10.16 | 155 | 0 | 1020 | 1400:-700:980 | 50 | 0.15 |
| 5 | -7.62 | 40 | 0 | 1053 | 1400:-700:980 | 50 | 0.037 |
| 6 | 7.62 | 154 | 0 | 1041 | 1400:-700:980 | 50 | 0.15 |
| 7 | 5.08 | 173 | 0 | 1229 | 1400:-700:980 | 50 | 0.14 |
| 8 | 2.54 | 138 | 0 | 1091 | 1400:-700:980 | 50 | 0.13 |
| 9 | 1 | 141 | 0 | 1045 | 1400:-700:980 | 50 | 0.13 |
| 10 | 0.5 | 139 | 1100 | 1400:-700:980 | 50 | 0.13 | |
| 11 | 0.25 | 289 | 2120 | 1400:-700:980 | 50 | 0.14 | |
| 12 | 1400:-700:980 | 50 | |||||
| 13 | 1400:-700:980 | 50 |
ADC + Scaler
| Run Number | Distance to Metallica's Feedthrough tip (cm) | Metalica scaler counts scaler ch 4 | Plastika Scaler Counts scaler ch 1 | Rear PMT + Front PMT + Gun Pulse Counts Scaler Ch 8 | HV S:F:G | Discriminator (mV) | Metalica counts/PMT+Gun pulse |
| 1251 | 0.25 | 967 | 0 | 23594 | 1400:-700:980 | 50 | 0.04 |
| 1252 | -1 | 224 | 0 | 1554 | 1400:-700:980 | 50 | 0.14 |
| 1253 | -4 | 164 | 0 | 1074 | 1400:-700:980 | 50 | 0.15 |
| 1254 | -7 | 93 | 0 | 1274 | 1400:-700:980 | 50 | |
| 1255 | -10 | 54 | 0 | 1075 | 1400:-700:980 | 50 | 0.05 |
| 1256 | -10 | 52 | 0 | 1047 | 1400:-700:980 | 50 | cut current in half from 30 ma to 14 ma peak |
| 1257 | 19 | 94 | 0 | 1029 | 1400:-700:980 | 50 | cut current in half from 30 ma to 14 ma peak |
tasks:
hook up TDC done, only for metalica
plastika, done, works
make collimator bigger, done
GEM readout
TTL gate pulse to G1
install GEM MCLK