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tilecal:lvpstripmonitoring2013

LVPS Trips during LS1 in 2013

Module Trip time Last installation before trip, box number Symptom, problem found Other notes
EBC42 2013-12-12 23:47:25 12-DEC-13 23:47:25,
LBA47 2013-11-20 00:05:13 19-NOV-13 14:50, 704 strange negative spikes in voltage and current of HV+15V brick, HV-15V brick current 0 after fLVPS switched on https://pcata007.cern.ch/elog/Maintenance/1492
LBA14 2013-11-15 00:45:05 13-NOV-13 18:00, 716
LBA08 2013-11-05 00:59:46 10-JAN-12 16:30, 335 Short tantalum cap at secondary output on brick #(?) Replace cap, brick starts again
EBC46 2013-10-31 01:17:55 15-MAR-13 14:41, 55221-MAR-13: wrong monitored temperature, doesn't start
LBC22 2013-06-11 04:20:21 07-JUN-13 17:48, 625
EBC42 2013-05-31 22:01:00 15-MAR-13 14:41, 512
LBA33 2013-05-15 21:26:40 14-MAY-13 20:41, 578

Description:

  • LVPS are monitored between 21:00-7.00 (nights).
  • The ignore list is created on-the-fly by analysing LVPS modules that are OFF between 20.00:21.00.
  • To reduce the output, a module with V=0 volts is checked every 2h.

Useful notes

  • Offline LVPS trip monitoring. Software implementation / Chekanov, S (ANL); Norberg, S (ANL/University of Oklahoma); Proudfoot, J (ANL) ATL-COM-TILECAL-2011-020.- Geneva : CERN, 2011 - 7 p.http://cdsweb.cern.ch/record/1228921?ln=en
  • Analysis of TileCal fLVPS Trip Characteristics / Chekanov, S (ANL); Norberg, S (ANL/University of Oklahoma); Proudfoot, J (ANL) ATL-COM-TILECAL-2011-019.- Geneva : CERN, 2011 - 11 p.ttp:cdsweb.cern.ch/record/1211303?ln=en Local copy: lvpsnote.pdf See the 2013 monitoring wiki Description: * LVPS are monitored between 21:00-7.00 (nights). * The ignore listis are created on-the-fly by analysing LVPS modules that are OFF between 20.00:21.00. * To reduce the output, a module with V=0 volts is checked every 2h.
tilecal/lvpstripmonitoring2013.txt · Last modified: 2014/01/14 16:57 by asc