View source for Moller Polarimeter How Tos

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===Hall A Moller High Voltage Controls===
The Hall A Moller calorimeter PMTs are connected to the negative HV card in slot 3 of the CAEN HV crate. This is called Card 2 in the accelerator JMenu GUI. The PMTs are plugged in as follows: 
*Left PMTs 1-4 are plugged into channels 0-3 
*Right PMTs 5-8 into channels 4-7 respectively.

Usual use of the HV controls will come from the GUI accessible via jmenu. Open jmenu as adaq on one of the adaq accounts:
 ssh -Y adaq@adaq1 jmenu
Navigate to the controls JMenu >> System Expert >> Hall A >> Moller >> CAEN HV >> HV Card 2. Card 2 has the Moller calorimeter PMTs.

===Connecting to the CAEN High Voltage Server===
Occasionally it might be necessary to log in directly to the CAEN HV server for example to reboot the system or if the GUI stops responding.

#To log in to the HV server from adaq account log in to hlal00 as hacuser by running  <code>ssh -Y hacuser@hlal00</code>
#At the prompt open firefox (Note: that the command below allows one to bypass the usual errors about firefox already running) <code>firefox -p default --no-remote</code>
#In the browser type the following address which will open the CAEN server control platform: <code>http://ihvhapol.acc.jlab.org</code>
You are now in the controls server from which you can do a variety of things including opening a basic controls table and rebooting the server/controller.

*<b>Reboot</b> go to Setting Menu >> Reboot
*<b>Set channels manually</b> outside the GUI go to Main Menu>>Channels Controller>Click to Start. This should open a basic table controller in Iced Tea software.
*HV levels that gave a mean ADC value of ~300 channels with LED runs on Oct 6, 2022: PMT1: 1573, PMT2: 1685, PMT3:1550, PMT5: 1613, PMT6: 1523, PMT7: 1595