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| | [http://www.iss.infn.it/webg3/cebaf/hadron.html HallA RICH, old page] | | [http://www.iss.infn.it/webg3/cebaf/hadron.html HallA RICH, old page] |
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| | + | [[Shift Checks]] and what to do in case of chamber trips |
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| − | RICH on-line monitor for Shift Workers: | + | How to acquire a [[RICH pedestal run]], generate the pedestal files and make them visible to the DAQ, for the next run |
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| − | on the Hall A NewTools, "EDM (HLA Main)", click on "RICH Detector" then check that Radiator Pressure is around 10 V, the Power Supply around 3.8 V both polarities (A nearly 3.76 V, B nearly 3.93 V), then click on "CAEN" buttom, on the "Crate 1" window popping up, click on "Modules" and then again on the next window "Crate #1" with the four modules of Crate #1, click on "Modules" of "Module 2", the only active module, then you can check and modify HV.
| + | [[RICH Information for experts]] |
| − | Channel 16 and Channel 17 are the only channels connected to the detector. They have to be on Status "Normal", "HVon" have to be "ON" and the voltage "Vmon" has to correspond to the voltage "Vset", nominally between 2200 and 2300 for Channel 16 and between 200 and 400 on Channel 17. If not, click on the "Module 2 Controls Screen" button, on the bottom of the panel, and click on "HVon" ON, then the HV should raise up very slowly, 5 V/s. If a trip occurred, the Status of the channel will be "Trip", after turning on the HV go back to the first "Crate 1" window and click on "Clear All Alarm". Then the status should change into "Up" and eventually into "Normal".
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| − | If the RICH is continuing tripping, keep HV off and call a RICH expert, do not try to keep HV on more than twice consecutively.
| + | [http://hallaweb.jlab.org/dvcslog/ARICH/ ARICH-elog] |
Latest revision as of 12:24, 31 January 2009
HallA RICH, old page
Shift Checks and what to do in case of chamber trips
How to acquire a RICH pedestal run, generate the pedestal files and make them visible to the DAQ, for the next run
RICH Information for experts
ARICH-elog
