Shift report 20010925 16:00-24:00

From: Apache (apache@pii3.brahms.bnl.gov)
Date: Tue Sep 25 2001 - 00:08:54 EDT

  • Next message: Zbigniew Majka: "Drift chamber operation"

    ------------------------------------------------------------
    Date: Tue Sep 25 00:08:54 2001, Shift: 16:00-24:00
    Supervisor: EJ, with: DS
    Log book#9 pages 34 - 36
    
    Shift Summary:
    ------------------------------------------------------------
    1. Beam stored and cogged since 22:07
    
    2. Run 4916 with 256k trigger 1 events.
       Started run 4917 
    
    3. Anode 1 on T5 tripped and we were unable to turn it 
       back on. When viewing plots in SuperMon we notised 
       that there were no data from T5 anode 3 (T5-3-X1 and
       T5-3-X2). Made some DVM runs and the last run showed
       a relatively large increase in drift velocity - see 
       logbook 9, p.36. We turned down voltages on T3, T4 
       and T5 in order to reduce the current - voltages 
       written down in logbook. For run 4917 we turned 
       voltages back to default values.
    
    ------------------------------------------------------------
    



    This archive was generated by hypermail 2b30 : Tue Sep 25 2001 - 00:09:39 EDT