[BLAST_SHIFTS] Shift summary 09/13/2003 B (4-8)

From: Electronic Log Book (elog@blast05.lns.mit.edu)
Date: Sat Sep 13 2003 - 10:09:11 EDT


Operators: zhangchi tavi milner

1) longitudinal holding field power supply failed arround 4:30. CCR swapped the power supply for transversal in and graduately turned the longitudinal field back on.

2) at arround 7:00 am. Attempted to raise the beam current to 120 and then 125mA. at the end of 120mA fill. WC left tripped. fill ended too soon, no time to investigate which box filled and if could recover before crates went to standby.

125mA fill killed left box23, 24. Box 23 Sense & Field Wire trip at 2000V. Box24 all wire trip at 800V. Dumped beam. Turn off left crate, wait a few munites, turn crate back on. trip instantly. repeated a few times, each with increasing waiting time. Still Trip. Called Doug, then turned WCL23, WCL24 off completely.

3) Right Neutron counter HV may be off for some of the runs before 8:00 am.

4) 10:00am: HVGUI received "broken pipe". Tavi rebooted the WC Left Crate in Dtunnel. There are at least two versions of HVGUI's in blast account blast:prot2003/hv, blast:pro2003/epics, neither of which works. one does not find all the sub pages, one does not have save buttom, and does not save new set values of HV.

there seem to be multiple versions of HV GUI in Adam's directory too. picked the one in ~degrush/MEDMdev, seems to work.



This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:30 EST