Difference between revisions of "Testing SHMS Preshower"

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[[Category:SHMSinfo]]
 
[[Category:SHMSinfo]]
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== Status ==
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== Status ( updated Sept 12th) ==
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* The SHMS Calorimeter has been cabled with signal and HV.
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* Run 82 going for the plus side. Set threshold to 20mV. Moved P14 & P9 from splitter to a linear FI/FO to increase pulse size.
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* Have checked setting each channel to 1400V that signal is seen.
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* Problems with FADC have been fixed by Brad. The read buffer array  was only set for 500 elements when the data was 504 elements. This caused an overflow to the next event.
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* Altered voltages within SHMS Calorimeter to match around 50 mV per tube.
 
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*Added external PMT's across top of calorimeter, 6 in total,
 
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*06/28 Taking data for number of events through calorimeter and external PMT's
 
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*07/10 Added diagram of Modules and Live connections
 
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*07/18 Added plots of SHMS Cal. data
 
  
 
== Computer Setup ==
 
== Computer Setup ==
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== Data taking Log ==
 
== Data taking Log ==
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{|border="1" align="center"
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*[[ Preshower data cosmic test log 1 | Log of runs 34-71]]. Problem with data readout.
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! Run number !! Start Date/Time    !!  Trigger !!  PreShower Threshold !! Scintillator Threshold !! End Date/Time!!  Events !!  HV figure  !! Comments
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*[[ Preshower data cosmic test log 2 | Log of runs 82-present]] . Fix data readout problem. Shifted the FADC window by 80ns so that the ADC signal starts around sample 10 compared to sample 30 before (sample = 4ns).
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! 34          || July 30th 17:53:19 || P1 && P14 ||    20mV      || N/A || July 31st  09:29:09  || 368        || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]]      || TDC range 1024ns (250ps/ch)       
 
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! 35          || July 31st 09:37:27 || P1 && P2 ||    20mV      ||  N/A  || 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      ||  N/A  || 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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! 37        || July 31st 14:38:13 || P1 && P2 ||    20mV      ||  N/A  || July 31st  14:56:13  || 738      || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]]   || TDC range 1024ns (250ps/ch)           
 
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! 38        || July 31st 15:26:35 || P1 && P5 ||    20mV      ||  N/A  || July 31st  15:47:02  || 119      || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]]  || TDC range 280ns (70ps/ch) power outage ending run       
 
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! 40        || July 31st 19:43:43 || P1 && P5 ||    20mV      ||  N/A  ||  Aug 1st 10:24:51    || 6367          || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]]  || TDC range 280ns (70ps/ch)       
 
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! 41        || Aug 1st 10:33:25 || P1 && P2 ||    20mV      ||  50mV  ||  Aug 1st  11:04:16    ||      1240      || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV ] [https://hallcweb.jlab.org/wiki/images/b/bc/HV_scint_run41.png Scint HV] || TDC range 280ns (70ps/ch)  Added scintillators to the TDC with threshold = 50mV 
 
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! 42        || Aug 1st 11:07:31 || P1 && P2 ||    20mV      ||  50mV  ||  Aug 2nd 9:38:29        ||    55941      || [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]  [https://hallcweb.jlab.org/wiki/images/b/bc/HV_scint_run41.png Scint HV] || TDC range 1024ns (250ps/ch) 
 
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! 43        || Aug 2nd 9:52:34 || P1 && P2 ||    15mV      ||  40mV  ||    Aug 2nd 11:46:39    ||    9183      ||            [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]] [https://hallcweb.jlab.org/wiki/images/b/bc/HV_scint_run41.png Scint HV]  || TDC range 1024ns (250ps/ch)   
 
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! 44        || Aug 2nd 11:55:03 || P1 && P2 ||    10mV      ||  30mV  ||  Aug 2nd  15:02:54    ||    28155      ||            [https://hallcweb.jlab.org/wiki/images/1/11/HV_preshower_pos_run34.png Pos HV]] [https://hallcweb.jlab.org/wiki/images/b/bc/HV_scint_run41.png Scint HV]  || TDC range 1024ns (250ps/ch)   
 
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! 45        || Aug 2nd 15:45:12 || P1 && P2 ||    10mV      ||  30mV  ||  Aug 2nd  17:26:06    ||    26089      ||            [https://hallcweb.jlab.org/wiki/images/2/2b/HV_preshower_plus_run45.png Updated Pos Preshower HV] [https://hallcweb.jlab.org/wiki/images/b/bc/HV_scint_run41.png Scint HV]  || TDC range 1024ns (250ps/ch)  raised HV for bars 1,2,11 & 14 
 
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! 46        || Aug 2nd 17:48:46 || P1 && P6 ||    10mV      ||  15mV  ||  Aug 3rd 11:09:04      ||  33524        ||            [https://hallcweb.jlab.org/wiki/images/2/2b/HV_preshower_plus_run45.png Run 45 Preshower HV] [https://hallcweb.jlab.org/wiki/images/b/bc/HV_scint_run41.png Scint HV]   || TDC range 1024ns (250ps/ch)   
 
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! 47        || Aug 3rd 11:10:29  || P1 && P14 ||    10mV      ||  15mV  ||  Aug 3rd  14:43:08      || 1090        ||            [https://hallcweb.jlab.org/wiki/images/2/2b/HV_preshower_plus_run45.png Run 45 Preshower HV] [https://hallcweb.jlab.org/wiki/images/b/bc/HV_scint_run41.png Scint HV]  || TDC range 1024ns (250ps/ch)   
 
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! 48        || Aug 3rd  14:47:49  || P2 && P14 ||    10mV      ||  15mV  ||  Aug 3rd 17:53:55      ||  1243      ||            [https://hallcweb.jlab.org/wiki/images/e/e7/HV_preshower_plus_run48.png Run 48 Preshower HV] [https://hallcweb.jlab.org/wiki/images/2/21/HV_scint_run48.png Run 48 Scint HV]  || TDC range 1024ns (250ps/ch)  Raised PSH1 HV, Scint Bot Mid HV
 
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! 49        || Aug 3rd  17:54:51  || P2 && P14 ||    10mV      ||  15mV  ||  Aug 6th 10:24:59      ||  25869        ||            [https://hallcweb.jlab.org/wiki/images/0/06/HV_preshower_plus_run49.png Run 49 Preshower HV] [https://hallcweb.jlab.org/wiki/images/2/21/HV_scint_run48.png Run 48 Scint HV]  || TDC range 1024ns (250ps/ch)  
 
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! 50        || Aug 6th 10:33:46 || P2 && P14 ||    20mV      ||  15mV  ||  Aug 7th 09:31:34        ||      2593    ||  [https://hallcweb.jlab.org/wiki/images/0/06/HV_preshower_plus_run49.png Run 49 Preshower HV] [https://hallcweb.jlab.org/wiki/images/2/21/HV_scint_run48.png Run 48 Scint HV]            || TDC range 1024ns (250ps/ch)
 
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! 51        || Aug 7th 09:40:47 || P2 && P14 ||    10mV      ||  15mV  ||  Aug 7th 12:27:43    ||  1178      ||  [https://hallcweb.jlab.org/wiki/images/1/15/HV_preshower_plus_run51.png  Run 51 Preshower HV ] [https://hallcweb.jlab.org/wiki/index.php/Image:HV_scint_run52.png Run 52 Scint HV]      || TDC range 1024ns (250ps/ch) Raised HV on PSH1 & 2
 
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! 52        || Aug 7th 12:32:51 || P2 && P14 ||    10mV      ||  15mV  ||  Aug 7th        ||        ||  [https://hallcweb.jlab.org/wiki/index.php/Image:HV_preshower_plus_run53.png Run 52 Preshower HV ] [https://hallcweb.jlab.org/wiki/index.php/Image:HV_scint_run52.png Run 52 Scint HV]      || TDC range 1024ns (250ps/ch) Raised HV on PSH 3-8, 10 & 11
 
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|}
 

Latest revision as of 14:03, 12 September 2012

Status ( updated Sept 12th)

  • Run 82 going for the plus side. Set threshold to 20mV. Moved P14 & P9 from splitter to a linear FI/FO to increase pulse size.
  • Problems with FADC have been fixed by Brad. The read buffer array was only set for 500 elements when the data was 504 elements. This caused an overflow to the next event.

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

  • Log of runs 34-71. Problem with data readout.
  • Log of runs 82-present . Fix data readout problem. Shifted the FADC window by 80ns so that the ADC signal starts around sample 10 compared to sample 30 before (sample = 4ns).
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