================================================================= Start up tasks with beam -- A.Konaka 28-Aug-2001 ================================================================== -- Before the beam * Turn on HV of UTC, RS, RSSC, Target, BV/BVL, and EC * Ck & Cpi gains: line-up single photoelectron peak height. * Checks by the QOD occupancies, including RStdc * Pulser triggers to calibrate RSSC * BV/BVL calibration and HV adjustment using cosmic trigger * verify that all new and old detector channels are working in ADC, TDC, CCD, and TD. * add BS and DS to each TDC system -- Tune beam using default Ck and BWC's to get kaons to Ck * Turn on Ck/Cpi/BWC/B4 and check scalers * Beam tune scalers, seconday emission chamber, and beamtune * Usually, I-Hung sets the trip monitor during this period -- Detector checkout * verify every detector element is working and set HV Particularly new systems: UPV,AD,RV,B4,dsCO,DPV. -- Check Ck tube-to-tube timing (and Cpi) * Line up individual Ck (Cpi) time relative to one of the middle finger of the B4 counter. Removing all the Ck cables and take data by installing one cable at a time. Trimming is done by adjusting cables behind the splitter box. -- Check B4 tube-to-tube timing * Adjust B4 gains by line-up m.i.p. peak by triggering on pions (choose events with single B4 hit per plane) * Create B4Usum and B4Vsum signals. Adjust the timing in the first order using scopes. * Line up individual B4 finger time relative to Ck or Cpi using the B4Usum and B4Vsum TDC3 plots. Time in B4Usum and B4Vsum to create B4UVsum. -- Check Kb coincidence * Target HV to be at an initial nominal setting. * Keep the TGsum signal and adjust B4 and Ck signals to be a few nsec after TGsum. (To maintain the KB timing as before) -- Measure Ck/Cpi efficiency using (kbeam-Ck) triggers -- Tune the beam to be roughly centered at r=0 and desired z * Beamtune program (or utc reconstruction) provides information. (UTC information required) -- IC gain adjust * Use Kmu2 trigger data to adjust the gain. Requires ADC information (check gate timing). -- Time IC counters to Ck using prompt / tune delayed coincidence [Steve K] * qvt plot for kaons hitting IC -- Quick check of L0 monitor triggers, gates, strobes, stops * Make sure the timings for new systems are OK: B4, Active degrader, Ring veto, UPV, DPV, downstream collar Ck/Cpi(ccd time) -- RS FERA calibration, HV update [Bipul] * Using Kmu2(1) data with cuts as during the March/April run. -- Retrim individual layer 2 times at T.2 * Retime T.2 if layer 2 HV changes -- Bulk RS timing check/trimming * Using the BV-tdc as was done in March/April * Correlate the BV-tdc result with RS-tdc -- T*2 Efficiency - measure using kbeam triggers. * Verify 15% gain -- Final check of trigger ext cond timing at the trigger transmitter -- Final gate, strobe, and stop timing and checking * CHECK YOUR SUBSYSTEM GATES ============================================================ == Level 0 monitor triggers will be ready at this point ==== ============================================================ -- DAQ work * re-establish ability to run with L1.n triggers * provide clear to RS TDC * attempt to fix SYNC errors with kbeam triggers * attempt to fix pause/continue problem * attempt to fix cable segment mismatch errors (maybe fixed) * add new scaler * create CCDPED trigger to add to smx * make new DAQ record with Midas data * establish disk space and cleanup for monitors on disk * measure deadtime, fix memory problems in SFI/SGU diagnosed by Renee as appropriate -- DAQ related work * establish run_log routines for efficiency data * improve loss_log and glitch_log record keeping * establish and polish online_logbook * finish voltage monitor system, tune warning limits, make display program * tune up rsled program, remove bad PMTs, set reasonable alarm limits * make a tdmon program to monitor TD's * finish upgrading photo for new detector (RS z from RS TDC,...) * continue QOD tune-up for new detector * adjust all scripts for 2001 running -- New meantimer board installation * cable trimming of the mean timer board * delay curves for L19 veto and IC coincidence at the T.2 meantimer * timing in Hex_MT, 1 BV_MT, 1 BVL, 1 BVL_MT, and 1 ZFRF bits signals to the trigger transmitter and TDC3 * make and test circuit to shut off L19 veto -- New trigger board * check the consistency between the old and new trigger boards * develop a new Kmu2(2) trigger and a new km21 trigger -- RS FERA calibration, HV update * Develop a procedure with the new Kmu2(2) trigger * Develop a procedure with RS monitor -- Take data for calibrations for the L0 trigger studies: * L0z timing data and trim * Data for TT ADC and TDC calib -> HV adjustment * Data for EC/BV calib -> HV adjustment and time trimming * Data to check L0RR masks * Data for UTC calib: 300k Kmu2(1), B=10 -- L0 trigger work: rate studies, veto studies * threshold curves and width studies for Hex/BV/BVL meantimers -- Preparation for Level 1.1 triggers * Check the performance of the stopping counter finder (SCF) * shorten TD gate, measure deadtime before and after, establish readout times of all crates. * Complete TD work * Data for L1.1 studies (L0 pnn1 trigger) * Data for TD t0 calibration and debugging * Data for TD shapes -- Install and test L1.1 constants -- Install and test L1.2 -- Complete CCD work * check cabling * verify gains, resolution etc for new systems (B4,AD,RV,UPV,Ck,Cpi) * verify new CCDPED trigger, verify temperature stability of peds * prepare for decision to shrink EC prompt window -- RS FERA calibration, HV update --- DAQ performance * measure deadtime as a function of rate * measure readout times of all crates, tune data loads * decide about applying L19 T*2 veto -- Trigger rate studies, set Standard Mix * Test Std Mix running * Tune mix and streams =========================== == Standard Mix running === =========================== -- Study of the running conditions * proton energy, kaon momentum and the spill length optimization -- Online calibrations * autocal and online_pass1 * maintaining glitch log and loss log * detector performance - rates, targetting, DT, and acceptance -- Other triggers * pnn2 optimization (new trigger, PV optimization) * 3 gamma trigger? (gamma clustering) * check the CEX and prompt triggers -------------------------------------------------------------