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BigBite High Voltage Control

The High Voltage control, used by E04-007, was written by Roman Pomatsalyuk. Documentation for this GUI is located here: High Voltage System

HOWTO start the HV Control GUI

  • Log into the adev account on adaql1 (password on sheet next to the WhiteBoard).

For example, in an xterm (logged in as adaq@adaql1):

 [adaq@adaql1 adaq]$ ssh adev@adaql1
  • Run the GUI:
 [adev@adaql1 adev]$ hvgui
  • After some time of reading configuration files and information from the HV Crates (about 30 seconds), the GUI should appear:

Hvgui example.png

HOWTO change high voltage

  • double click the slot you want to change in Target_V column

Hvgui example1.png

  • change the value then hit enter
  • after finish changing please save the setting

HOWTO save high voltage setting

  • click File
  • choose Save Voltage Set

Hvgui example2.png

  • please save the file in the format as you see in the example


== HV map for BB

  • bbps1 S0 to S9 are E and DE BB planes
    • S0 de 1-12 Left S1 de 13-24 Left S2 de 1-12 Right S3 de 13-24 Right
    • S4 E 1-12 Left S5 E 13-24 Left S6 E 1-12 Right S7 E 13-24 Right
    • S8 Bar in front of platform
  • bbps1 S14 Bigbite MWDC HV
    • 0 to 3 front chambers
    • 4 to 7 back chambers

Channels for the MWDC

The Channels for the MWDC are in Slot 14.

  • Front Chamber = 14.0 through 14.3
  • Back Chamber = 14.4 through 14.7


If a single channel (or more) on one of the chambers trips then bring the whole set of four down together before resetting the HV.
For example, if channel 14.1 trips, this is one of the four voltages for the front chamber, and so you should turn off 14.0, 14.1, 14,2 and 14.3 before resetting the voltage.

It is a good idea to turn off the beam before resetting the voltages.

To reset a tripped voltage, you go to the Edit menu at the top of the GUI, then select "Disable Channel", then select "Enable Channel" again. The beeping and the red highlights should disappear.

HOWTO Access the High Voltage GUI from other programs/scripts

The main script to access information from the High Voltage gui is:


This shell script is softlinked several places for convenience. Here's it's usage:

Call parameters: -D detec [-c command] -m range [-c command] [-P parameter-to-get] [-H host] [-p port] ....
          -c command (GET or SET or MAPS)                      default: GET
             MAPS: just prints the maps names 
            (-D should be defined, the other parameters are ignored)
          -P parameter to use : DV, MV, MC, CE                 default: DV
             for -c SET the valid parameters are DV, CE
          -D detector maps (NA_ND, NA_VT, BB_SH, BB_PS, BB_SC) default: none
             NA: NA_ND_L / NA_ND_R / NA_VT_L / NA_VT_R
             BB: BB_PS / BB_PS_L /BB_PS_R / BB_SC
          -m colums,rows range, ex: 3,17 or 2:13,7:9           default: none                  
          -v  value to SET (used if no -f declared)            default: none
          -f  file name containing lines with "ix iy value"    default: none
          -t  test only                                        default: none
          -H host name where the server is running             default: none
             (if none - adev for NA and adaql3 for BB)
          -p port number                                       default: 5555
          -b client program                                    default: /adaqfs/home/adev/slowc/hvg/hvcli
          -? or ? or -h  print this help                       default: none
Example: -c GET -P MV -D NA_ND_L -m 1:4,2:26  
Example: -c GET -P MC -D BB_SH -m 1:7,1:27  
Example: -c MAPS -P MC -D NA_VT_L -m 1:7,1:27  
Example: -c SET -P DV -v -1200 -D NA_ND_L -m 1:7,1:27  
Example: -c SET -P CE -v 1 -D NA_ND_L -m 1:7,1:27

All of this assumes that a map of HV channels to Detector has been made (e.g. NA_ND, BB_SH, ...). Help on configuring this file is found here: High Voltage System - Map