Re: [BLAST_SHIFTS] June 6 2003 evening shift

From: Chris Crawford (chris2@lns.mit.edu)
Date: Sat Jun 07 2003 - 06:40:14 EDT


the problem with lrn always writing lr-0.root: check to be sure that
the blastrc filename is:
"$ANALDIR/lr-#.root" (lrn.C replaces # with the current run number)
--chris

Adrian T Sindile wrote:

>The SH was closed again (see previous shift's report) around 4:30 PM and
>around 5:30 PM the beam was being tuned.
>Around 6 PM the BLAST power supply tripped once again. We used the access
>to swap the WC helium six pack, following Doug's instructions.
>
>Townsend looked into the BLAST power supply problem...
>
>The isobutane was showing 106 on the scale, so it was not swapped (it
>would have been, had it been under 100).
>Around 7:30 PM the epics control was used to open the valves and set the
>helium rate.
>
>8:55 PM - we started run 705. Compton has to be run manually, stopped
>before autofill and started right after autofill... needs a lot of care!
>Under present conditions, if Compton is left running during ring fill, the
>ioc will crash and require reboot.
>
>Compton polarimeter: measured -88 +/- 6% for one helicity state in one
>fill. Measured +61 +/- 11% for opposite state.
>
>By the end of the shift we had runs 705, 707, 708 taken.
>
>We had had an access to D-tunnel: corrected wiring from LCC0 (wrong cable
>was attached). Now scalers working fine. Adjusted offset on LCC0 (pedestal
>should be on scale now - Tancredi suggested this).
>The other boxes should be also checked.
>
>We tried crunching runs 705 and 707.
>
>New lrn.C writes lr-0.root all the time. It is supposed to write
>lr-RUN#.root... now, if you do not move the .root file,
>it will be overwritten, nullifying the previous crunch.
>Besides, looking into the .root file with show_ep_asym.C, we got errors.
>This did not happened for runs crunched with old lrn.C... we checked.
>
>This needs to be fixed, or no data can be crunched!
>
>Townsend and Adrian
>
>-------------------------------
>Adrian Sindile
>Research Assistant
>Nuclear Physics Group
>University of New Hampshire
>phone: (603)862-1691
>FAX: (603)862-2998
>email: asindile@alberti.unh.edu
>http://einstein.unh.edu/~adrian/
>
>



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