Subject: jan 15,2000 evening shift
From: Vivian O'Dell (firstname.lastname@example.org)
Date: Fri Feb 04 2000 - 15:26:13 CST
Shift Summary for eve shift, 01/15/00
On Shift: Mike A., Ricardo B.
Hours of beam delivered at all intensities: 8.5
Hours of beam delivered at nominal intensity:8.0
Hours of E799 data (special runs not included): 7.8
Hours of special runs (laser scans, muon runs...):none
Accounting of lost time: fresh start after ktev2 stopped writing,
pipeline resets, kfrends
Runs ended this shift:
Run 15540 - 11M events - Beam_799
Tapes brought to FCC this shift: none
Accesses during shift:none
Description of Shift: taking regular E799 data
run spill time comment
15540 15:40 spill structure bad, complain to MCR, they
reduce intensity to 4E12 while working on it.
reset of QXR fixes it
16:15 spill OK now, intensity back to 9E12.
16:32 pipeline errors (ordinal mismatch) KFREND
17:20 ask for 9.5E12, they are actually almost there
21:10 "check L3 accept fraction", Notice that no
events are being written on ktev2 drives,
although triggers are running and memories
are working normally. Call Ed, he can't tell
what's wrong either. Stop run, it stops normally.
15541 21:30 new beam_799 run after DRT_FRESH_START, no problems,
data appends to tapes normally.
21:10 TRD alarm, TRD2 back plane drew higher than
normal current for about 10 min then back to
15541 ~60-80 23:00 pipeline errors, reset several times and the
problem comes back, finally call Bob T. He
suggests reset with DBC, After about 23:15 no
23:50 Bob T calls back and says his analysis of event
dumps shows that all the problems were in fact
not pipeline errors but rather ordinal mismatches
in stream 5.
For next shift:
Ed wanted to be paged at next run change to install new
We are getting off and on Epicure errors from slow DAQ,
NM2S1 is reading back slightly lower than tolerance.
This archive was generated by hypermail 2b27 : Fri Feb 04 2000 - 15:26:15 CST