Laser Control

Laser Control Menu

1. Log onto hacsbs2 using account hacuser, password is on the wall.
2. enter the directory Hall_A_Tools and execute NewTools
3. EOS menu -> EDM(HLA Main) ->Polarized He3 -> Main Laser Control

COMET Laser Control

Each of the COMET Laser Control is divided into to parts representing two controllers we're using at the same time as you see in the snapshot.

• The top one is for the Diode Driver, which is the power supply of the laser diode and controls the current.
• The buttom one is for the Temperature Controller, which is controlling the diode temperature so that the wavelength of the output laser is stablized.

Diode Driver

The control of the diode driver has three sections:

Status

There are four clickable options and three indicators

1. Indicator Comm: Shows the communication status, it should stay green when the communication to the device is good
2. Options Disable and Enable: Used to enable or disable the laser. The check marks will not be updated automatically, so some time it's may not be in the right place.
3. Second Indicator: Broken... and always in red....
4. Options Remote and Local: Used to switch between remote and local mode. The GUI can only read back status and send commends in Remote mode.
5. Third Indicator: Green means Remote mode and Yellow means Local mode.

Current

the unit in this section is wrong, and should be A instead of mW)

FAP Laser Control

Discontinued...

Currently Used Lasers

• COMET 1 (W&M): 35A, 26C
• COMET 2 (Rutgers): 34A, 20C
• COMET 3 (JLab): 36A, 25C