ASYNC2 trigger and delay files are at clon01:/usr/local/clas/parms/photon
Franz, Vardan Gyurjyan, Dave Doughty
E01-017(g6c) Preparation Check-List
| Item | Person In Charge | Status | Comments |
|---|---|---|---|
| ST booster HV Cable | Ji Li, Lei Guo | |
done |
| ST booster HV supply | Carlos Salgado, Ji Li, Mina Nozar, Dennis Weygand | |
The original Power Supply borrowed from Ashot was replaced with a LeCroy 4032A model. Cables are connected to the -800V connector on the tubes. Note, after the PS unit is turned on (after having been off for a while), the restore switch doesn't set the hv's to the previous set values and must be set again by hand for channels 0 through 5. At the moment, they are set at -750V each. | ST PMT base testing | Carlos Salgado, Ji Li, Mina Nozar | |
Cosmic ray signals look fine. The -800V are drawing currents.Detail see below*. | ST booster HV remote-control cable | Carlos Salgado, Ji Li | |
Mark Ito, Arne Freyberger |
| Radiator 2 x 10^-4 | Ji Li, Carlos Salgado | |
Arne Freyberger |
| E-counters (our region of interest: 1-100) | Mina Nozar, Mike Wood, .... | |
Light leak test done (No light leak observed). Wait for Phil, Mikhail and others to finish testing after installation of the pvc pipes. | T-counters (our region of interest: 1-12) | Mina Nozar | |
All 61 channels but channel 20 are working. LR coincidences checked, setting LR window at 10ns. |
| Forward carriage electronics | Mina Nozar, Ji Li, Lei Guo | |
Wiring and cable length checked(see running condition page for values). ASYNC2 disabled during g8 run due to large prescale factor g8 uses. |
| Beam pipe | Ji Li | |
David Kashy |
| L1 Trigger files | Ji Li, Mina Nozar, Lei Guo | |
Trigger files: ASYNC2 trigger and delay files are at clon01:/usr/local/clas/parms/photon Franz, Vardan Gyurjyan, Dave Doughty |
| Online monitoring routines | Dennis Weygand | |
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|
Matthieu Guillo | |
* Start Counter Booster Voltages/Currents from the CAN power supply unit.
| Channel No. | Cable No. | Voltage (V) | Read Back (uA) | Limit (uA) |
|---|---|---|---|---|
| 32 | 1 | -800 / -700 | 2700 / 1279 | 2900 |
| 33 | 2 | -800 / -700 | 2674 / 1246 | 2900 |
| 34 | 3 | -800 / -700 | 2711 / 1327 | 2900 |
| 35 | 4 | -800 / -700 | 2699 / 1337 | 2900 |
| 36 | 5 | -800 / -700 | 2630 / 1309 | 2900 |
| 37 | 6 | -800 / -700 | 2670 / 1331 | 2900 |
| HV Channel No. | Cable No. | Main HV channels (vt100 terminal control (shift b)) | Voltage (V) |
|---|---|---|---|
| 0 | 1 | 12.2 | -750 |
| 1 | 2 | 12.3 | -750 |
| 2 | 3 | 12.4 | -750 |
| 3 | 4 | 12.5 | -750 |
| 4 | 5 | 12.6 | -750 |
| 5 | 6 | 12.7 | -750 |
ASYNC signal width and cable lengths (as measured by the pulsor)
| Chnnel | Width (ns) (Before/after delay) | Cable length (ns) |
|---|---|---|
| MOR(1-61) | 8.48/7.88 | 105 |
| ST(1/3) | 15.0/13.0 | 109 |
| MOR(1-12) | 7.53/7.13 | 102 |
| ST(2/3) | 13.2/13.1 | 113 |
