############################################################################# # # # STRAW CHAMBERS HISTORY FILE # # # ############################################################################# Latest update: 4/8/97 by P. Rumerio For suggest and comment: Rumerio@fnal.gov ACTUAL WORKING CONDITIONS: HIGH VOLTAGE: Straw I HV = 1300 V Straw II HV = 1500 V THRESHOLDS: from file thr13.dat (automatically loaded by DAQ) TDC SETUP: max full scale offset # of hits straw I 420 220 16 straw II 440 140 16 DRIFT TIME DISTRIBUTIONS: latest database update from run 1000 DEAD AND NOISY CHANNELS: inner layer outer layer straw I 1,13,14,49-56 8,10,32,41,49-56,64 straw II 56 40 48 ----------------------------------------------------------------------------- ----------------------------------------------------------------------------- RUN(S) SUBJECT DESCRIPTION FROM THRU ----------------------------------------------------------------------------- 001 596 GAS argon:carbon dioxide:methane=90:9:1 001 596 STRAW INFO not available 597 9999 GAS argon:isobutane:methylal=82:15:3 597 751 STRAW INFO check straw logbook (test period) 752 9999 THRESHOLDS from file thr13.dat 752 831 TDC straw I MFS (max full scale) = 270 ns OFF (offset) = 140 ns max # hits = 6 straw II MFS (max full scale) = 310 ns OFF (offset) = 10 ns max # hits = 6 752 752 HIGH VOLTAGE HV straw I = 1250 V HV straw II = 1350 V 753 758 HIGH VOLTAGE HV straw I = 1250 V HV straw II = 1475 V 759 769 HIGH VOLTAGE HV straw I = 1275 V HV straw II = 1450 V 770 773 HIGH VOLTAGE HV straw I = 1300 V HV straw II = 1500 V 774 774 HIGH VOLTAGE HV straw I = 1285 V HV straw II = 1485 V 771 830 DB UPDATING t0's and drift time distributions from run 771 775 775 HIGH VOLTAGE HV straw I = 1270 V HV straw II = 1470 V 776 782 HIGH VOLTAGE HV straw I = 1260 V HV straw II = 1460 V 783 784 HIGH VOLTAGE HV straw I = 1285 V HV straw II = 1485 V 801 829 HIGH VOLTAGE HV straw I = 1260 V HV straw II = 1460 V 830 830 HIGH VOLTAGE HV straw I = 1300 V HV straw II = 1500 V 831 846 DB UPDATING t0's and drift time distributions from run 831 831 831 HIGH VOLTAGE HV straw I = 1320 V HV straw II = 1530 V 836 845 HIGH VOLTAGE HV straw I = 1260 V HV straw II = 1460 V 846 9999 HIGH VOLTAGE HV straw I = 1300 V HV straw II = 1500 V 836 846 TDC new, but WRONG, position of the TDC windows (due to the new FCAL TDCs in the same crate) straw I MFS (max full scale) = 350 ns OFF (offset) = 220 ns max # hits = 7 straw II MFS (max full scale) = 390 ns OFF (offset) = 90 ns max # hits = 7 847 909 TDC straw I MFS (max full scale) = 420 ns OFF (offset) = 220 ns max # hits = 7 straw II MFS (max full scale) = 440 ns OFF (offset) = 140 ns max # hits = 7 848 851 HIGH VOLTAGE straw I,II tripped 851 851 HIGH VOLTAGE straw I power supply replaced 883 888 HIGH VOLTAGE straw I,II tripped many times 1000 9999 DB UPDATE t0's and drift time distributions from run 1000 1005 9999 TDC straw I max # of hits = 16 straw II max # of hits = 16 -----------------------------------------------------------------------------