List of Trigger Tower Work During Next Access ----------------------------------------------- Original Rev. 21-Sep-2002 Current Rev. 5-AUG-2003 The following Trigger Towers all have a problem. The L1 Cal Trig Channel has been tested and appears OK. The cable has been tested from the MCH end and does not have an obvious problem. Next Access Trigger Tower Work in the Collision Hall -------------------------------------------------------- -13,18 EM Trigger Tower Currently has a problem. 11-JUN-03 Almost no signal observed in the plot. No signal on the + side of the cable. The signal on the - side looks OK. The cable does not look shorted. During access look at this BLS. BLS Coord. 0-2-2 2-JUL-03 BLS card checked and it looked OK -6,22 Trigger Tower Currently has a problem. 8-JAN-03 -6,22 EM has too much noise to Run. -6,22 EM is Excluded. 30-MAY-03 With HV off no sparks. HV on 100 mV spark every 4 usec. 31-JUL-03 40-50 mV spark every 2 usec. Make single TT Ref Set run. There does not appear to be energy in the Precision Readout Next Access, long test 0f this BLS again in the Test Stand. +16,8 EM Trigger Tower Currently has a problem. 11-JUN-03 No signal on the lower part of the pedestal plot. No signal on the - side of the cable. The signal on the + side looks OK. The cable does not look shorted. During access look at this BLS. BLS Coord. 7-1-1 28-JUL-03 The EM- coax has an open center conductor. Next access determine where the break is. +17,28 EM Trigger Tower Currently has a problem. 11-JUN-03 No signal on the lower part of the pedestal plot. Signals look OK. Will check this CTFE with the pulser before looking at this BLS. 12-JUN-03 Have now used pulser to check CTFE gain - it is correct. During access look at this BLS. BLS Coord. 6-7-2 30-JUL-03 Check BLS in Test Stand and EM signals look OK. +20,1 EM Trigger Tower Currently has a problem. 27-JUN-03 On the pedestal plot it looks on 1/2 normal width. EM- looks OK No signal on EM+ Cable looks OK and looks plugged in. During access look at this BLS. BLS Coord. ?-?-? 30-JUL-03 Check BLS in Test Stand and EM & HD signals look OK. List of TT work done at the BLS end. I.E. when you working on the BLS end of a TT, add a short clear note below. When you are finished working on a TT remove it from the list above but leave it in the list below showing what actions have been taken in the Collision Hall. List of Trigger Towers that have been Worked on in the Collision Hall --------------------------------------------------------------------- BLS ------------------ TT Rack Crate Card Action Taken During Access Date ------ ---- ----- ---- ----------------------------------- --------- -13,32 BLS Coord. 11-11-2 Installed missing EM & HD drivers. 2-JUL-03 -12,18 BLS Coord. 0-2-1 Installed missing EM drivers. 2-JUL-03 -12,22 PN00 1 15 HD was 50%, Replace the Driver 22-OCT-02 -12,21 PN00 0 11 Plugged into wrong connector at BLS 19-SEP-02 -11,1 BLS Coord. ??? HD Driver was in backwards 28-JUL-03 -11,6 PN13 1 16 Cable tested OK 2-OCT-02 -11,6 PN13 1 16 No EM signal, BLS Cable was loose 22-OCT-02 -11,21 PN00 0 12 Plugged into wrong connector at BLS 19-SEP-02 -11,30 PN03 1 16 No HD signal, Replace Driver 22-OCT-02 -7,7 PN13 1 8 no EM, BLS has been tested all OK 22-OCT-02 -6,21 PC00 1 3 Cable tested OK 2-OCT-02 -5,3 PC05 1 16 Repaired shorted -HD cable 2-OCT-02 -5,3 PC05 1 16 EM 50%, BLS has been tested all OK 22-OCT-02 -4,7 PC05 2 9 HD 50%, BLS has been tested all OK 22-OCT-02 -3,7 PC05 2 10 HD 50%, BLS has been tested all OK 22-OCT-02 -2,1 PC05 0 15 No HD, BLS has been tested all OK 22-OCT-02 -2,5 PC05 1 7 HD 50%, BLS has been tested all OK 22-OCT-02 -2,19 PC00 0 3 EM 34%, BLS has been tested all OK 22-OCT-02 -1,5 PC05 1 8 No EM, Replace Driver & Summer 22-OCT-02 -1,30 PC07 1 2 HD 50%, BLS has been tested all OK 22-OCT-02 +2,5 PC21 1 13 no HD signal, Replace the Driver 22-OCT-02 +5,20 PC16 1 4 Cable not plugged in at BLS end 19-SEP-02 +5,22 PC16 1 16 HD signal 50%, Replace the Summer 22-OCT-02 +6,20 PC16 1 3 Cable not plugged in at BLS end 19-SEP-02 +7,11 PS00 0 4 HD Driver was in backwards 2-OCT-02 +7,11 PS00 0 4 no HD signal, Replace the Driver 22-OCT-02 +7,21 PS08 2 12 HD Driver was in backwards 2-OCT-02 +7,21 PS08 2 12 no HD signal, Replace the Driver 22-OCT-02 +9,4 PS05 0 14 No EM signal, Replace the Summer 22-OCT-02 +9,5 PS07 2 10 EM & HD 50%, BLS tests all OK 22-OCT-02 +11,18 PS10 1 4 EM & HD 125%, BLS tests all OK 22-OCT-02 +11,31 PS11 1 16 Bent cable connector pin at BLS end 19-SEP-02 +12,17 BLS Coord. 5-11-1 Installed missing EM drivers. 2-JUL-03 +12,30 PS11 1 3 No HD signal, Replace the Driver 22-OCT-02 +12,31 PS11 1 15 Bent cable connector pin at BLS end 19-SEP-02 +17,25 BLS Coord. 6-11-6 Replace bad EM Driver 30-JUL-03 +17,28 BLS Coord. 6-7-2 Replace bad HD Driver 30-JUL-03