February 23, 2011 online meeting minutes

present: Sergey Boyarinov, Eugene Pasyuk, Nerses, Sergey Pozdnyakov, Mark Kibilko, Gianni Dimaio

1. Downtime work

• tagger restoration - couple weeks; tage recabling; 3 VME cpu needed; tage HV restoration; translation table for tage

• microstrip detectors - need to see if working and use for tage calibration; if does not work, will calibrate later using other microstrips (HPS SVT ?)

• trigger for g14 (HDIce) run, need to test level2 with new trigger version, or use previous one

• LabView-EPICS communication to be implemented (Chris Bass and Nerses)

• LAC: half of ADCs shows garbage, need to fix; TDCs were never tested after PRIMEX2

• no CC

2. CAEN visit

• DC HV replacement was discussed, 944 fast trip was important, will discuss how to implement it in sy1527

• sy1527 boards testing conditions were discussed, will set better cooling and use every other slot; max power per channel is 8W, for tests we'll limit it to 7W and run 48 hours; also it is good to go up and down every hour

• calibration boards for sy1527 will arrive in few month, JLAB personal was trained for calibration and repairs; we have spare channels and DC converter and fuses

• old sy527 system need new fans (6 big and one small) if we want to use them in a future

• in general sy1527 needed at least 2U, better 3U of clear space underneas of mainframe; use side rails instead of shelfs

3. TPE run will be ended Friday Feb 25