BaBar Drift Chamber

Returning to Running Operations

Last Updated: January 10, 2007 by Karl Bouldin


MAINTAIN THE LOGBOOK

Before starting these procedures, please make an entry in the logbook.

REFILL THE DCH GAS SYSTEM

You do not have to do it by yourself, but please contact DCH Gas System experts (Jim McDonald, Karl Bouldin) to ensure this is being done.

TURN ON THE HIGH VOLTAGE

  1. Check that the conditions are right to do so.
  2. Remember the LEMO terminators we removed before shutdown? Now it is time to put them back.
  3. Try ramping up HV in EPICS

Note: if you fail to ramp up the HV, try the following:

Hints to resolve some common HV problems are available.

UPDATE ALARM HANDLER CONFIGURATION

It's preferable to coordinate the actions with DCH EPICS experts (Vincent Poireau, Karl Bouldin)

Remember that before shutdown we changed to ALH configuration to avoid alarms caused by removing the LEMO connectors? It is time to update it again!

Restart cron jobs for dch-mon and dch-gas

MAINTAIN THE LOGBOOK

Please make an entry in the logbook when these procedures are completed.