CEA Compton /OSP /How to / T. Pussieux
 
 
Procedure 3
 
How to switch the Laser on ?  
On the EPICS control panel, pull the "OPTICS" menu down. Click on "Mini Optic".
Compton PolarimeterCompton PolarimeterCompton Polarimeter
To turn the Laser On .... Click on the Laser On button.
Check LASER STATUS and INCIDENT POWER.
A Laser spot may blink on the CCD control TV screen (second from left among the 4 screens)
and you should see a bright spot on the miror control TV screen (last one on the right).

CCD Video control laser Off CCD Video control laser On

If Laser doesn't turns ON most problable problem is an interlock fault.
You need an access in Hall A and check the different parts of the laser interlock around the optic table:
*Two crash buttons on the left wall, inside and outside the green tent.
*The optic table is protected by a metallic cover. Four magnetic switches connect the top and the walls
of this cover. Some of them might be opened. CAUTION!!: you are standing close to the optic table.
Do not try to open the cover. Just move the top carefully sideways to try to close the switches.


Compton Polarimeter last updated : 06/11/2004
Procedure 3 CEA 1995 - all rights reserved