https://clonwiki0.jlab.org/wiki/index.php?action=history&feed=atom&title=May_20%2C_2009_online_meeting_minutes 2026-05-07T11:38:08Z Revision history for this page on the wiki MediaWiki 1.42.1 https://clonwiki0.jlab.org/wiki/index.php?title=May_20,_2009_online_meeting_minutes&diff=4287&oldid=prev 2009-05-20T14:31:13Z

<p></p> <p><b>New page</b></p><div>present: Sergey Boyarinov, Sergey Pozdnyakov<br /> <br /> 1. HV<br /> <br /> * one of the TOF Lecroy mainframes was replaced by TOF team, spare was takes from the counting house; will not send broken Lecroy mainframe to repair yet to save money, upgrade needed and it will cost about $7000; 3 boards were moved from the hall to the test setup, 2 of them seems fine (one of them had tilted pin in bus connector); need better organized HV repair procedure, last time 4 boards were broken in a process in counting house test setup, need a meeting with all personal involved<br /> <br /> * glued patch panels seems working fine, will use that method in future; 2 channels in 2 A1535 boards were broken and will be repaired; will ask Chris to repair and check calibration; if calibration is bad then will send it to CAEN; third board (unvisible in mainframe) will be stripped, and then send to CAEN<br /> <br /> * continue to work with CAEN on SY1527/A1535 16-slot problem<br /> <br /> 2. DAQ:<br /> <br /> * polar readout was changed, scaler opens in first event now (was in Go), does not crash on first event any more<br /> <br /> * it was observed that if ROCs running for the long time (week and more) they must be rebooted, otherwise they starting to crash one after another, need to understand the reason; in a meanwhile will run &#039;net&#039; only on PMCs, will see if it cost by &#039;net&#039; or &#039;proc&#039;<br /> <br /> * sc2 is crashing about once per shift, under investigation<br /> <br /> * disconnected front-end-busy cable from SF to FC was disconnected on the floor, it cost missing gate errors in DC crates; cable was labeled and connected <br /> <br /> * &#039;mysql not available&#039; error was observed in runcontrol, also all rocs reboot sometimes cost database to not respond fast enough, need to investigate<br /> <br /> 3. Run database<br /> <br /> * run_log_restore program is ready, it will restore 3 ascii files in $CLON_PARMS area, which will be used to update database; will create a cron job to extract files from SILO and scan them one by one; 2 copies will be run: on clondaq2 to restore new files from raid, and on clonmon1 to restore old files from SILO</div>

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