Difference between revisions of "Testing SHMS Preshower"
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! 35 || July 31st 09:37:27 || P1 && P2 || 20mV || July 31st 10:29:10 || 2178 || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]] || TDC range 1024ns (250ps/ch) | ! 35 || July 31st 09:37:27 || P1 && P2 || 20mV || July 31st 10:29:10 || 2178 || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]] || TDC range 1024ns (250ps/ch) | ||
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! 36 || July 31st 14:29:14 || P1 && P2 || 20mV || July 31st 14:35:00 || 144 || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]] || TDC range 1024ns (250ps/ch power outage ending run) | ! 36 || July 31st 14:29:14 || P1 && P2 || 20mV || July 31st 14:35:00 || 144 || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]] || TDC range 1024ns (250ps/ch power outage ending run) | ||
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Revision as of 13:37, 31 July 2012
Status
- The SHMS Calorimeter has been cabled with signal and HV.
- Have checked setting each channel to 1400V that signal is seen.
- Altered voltages within SHMS Calorimeter to match around 50 mV per tube.
- Added external PMT's across top of calorimeter, 6 in total,
- 06/28 Taking data for number of events through calorimeter and external PMT's
- 07/10 Added diagram of Modules and Live connections
- 07/18 Added plots of SHMS Cal. data
Computer Setup
- Computer is called cnu. The account is gep5.
HV Setup
- Can control the CAEN 403 through terminal on cnu.
- Open terminal
- type "su" to login as superuser.
- type "minicom"
- Listing of the HV setting and cable numbering for the preshower and scintillators
- Preshower HV for Neg and for Positive side on July 30th at 4:41
Event Data
- Coincidence data between SHMS Cal and external PMTs Hits per hour
- Diagram of modules used for collecting coincidence data Module Diagram
- Voltage versus PMT# plots for the negative and positive sides of the calorimeter. plot
Data taking Log
| Run number | Start Date/Time | Trigger | Threshold | End Date/Time | Events | HV figure | Comments |
|---|---|---|---|---|---|---|---|
| 34 | July 30th 17:53:19 | P1 && P14 | 20mV | July 31st 09:29:09 | 368 | Pos HV] | TDC range 1024ns (250ps/ch) |
| 35 | July 31st 09:37:27 | P1 && P2 | 20mV | July 31st 10:29:10 | 2178 | Pos HV] | TDC range 1024ns (250ps/ch) |
| 36 | July 31st 14:29:14 | P1 && P2 | 20mV | July 31st 14:35:00 | 144 | Pos HV] | TDC range 1024ns (250ps/ch power outage ending run) |
