DIRC Expert Instructions

Instruction on Special Procedures and Operations

• Threshold Scan Procedure

• LED Run Procedure

Fixes to complicated Issues

Symptom of the problem:

Solution

• General -> Status of Voltages and then “RESET INTERLOCK” for D2_8_MID (picture below).

Installation and uninstallation of South DIR Box c2r18

Since the incorrect installation/removal process will cause serious damage to the fiber or PMT, as the first step of this operation, one must obtain permission from Justin Stevens.

• Due to the fact the South DIRC box c2r18 doesn't have RTV cookie, therefore, a special installation and uninstallation procedure is required, installation is given: https://logbooks.jlab.org/entry/3860930. (This is for documentation only donot use)
• See update-to-date instruction: https://logbooks.jlab.org/entry/3862103