From ambrose@fnal.gov Sun Nov 4 22:37:34 2001 Date: Sun, 04 Nov 2001 22:37:15 -0600 From: David Ambrose To: COT Group -- Adam , Alec , Aseet , Ashutosh Kotwal , Ayana , Bill Orejudos , Bill Robertson , Bob Wagner , Dave Ambrose , Eiko , Eric James , Evelyn , Greg Veramendi , Jay , JC Yun , Ken Schultz , Kevin Burkett , Kevin Pitts , Kirby , Marina Brozovic , Michael Lindgren , Morris , Nigel Lockyer , Paris , Peter Tamburello , Peter Wittich , pjw , Reinhard Eckmann , Rob Snihur , Robyn Madrak , Ron Moore , Ting , Tom Phillips , Young-Kee Subject: master problem list Below is a list of problems remaining on the COT front-end, as well as a summary of the HV work done. This list can be found on the shutdown web site: http://penn01.fnal.gov/~cot/oct2001/ in the "Master list" link. There is also the SL5 LV short that needs to be fixed. ============================================================================== Priority lists: (extracted from problem list below) --------------- High-level noise cells: SL6-031 (A,063,01-12-3): 00 dead, 05 hot!, 06 warm --> Maybe associated with double-pulsing #11 wire. SL6-098 (B,237,03-14-1): 00 dead, 00 hot!, 00 warm, 12 null SL6-099 (B,237,03-14-1): 00 dead, 09 hot!, 01 warm, 02 null --> Extreme null noise on even, hot noise on odd, good occ on all, high DTH on all. SL6-104 (B,240,03-13-0): 00 dead, 00 hot!, 00 warm, 12 null SL6-105 (B,240,03-13-0): 00 dead, 01 hot!, 00 warm, 11 null --> Large null noise, half DTH size. SL6-108 (B,242,03-13-2): 00 dead, 00 hot!, 01 warm, 08 null SL6-109 (B,242,03-13-2): 00 dead, 02 hot!, 03 warm, 04 null --> Moderate null noise, good occ, DTH. SL6-178 (B,361,05-15-1): 00 dead, 00 hot!, 00 warm, 08 null SL6-179 (B,361,05-15-1): 00 dead, 01 hot!, 01 warm, 07 null --> Null noise, probably from crossed wire 179#05, low DTH. SL7-017 (A,032,01-07-0): 00 dead, 00 hot!, 00 warm, 03 null --> Null noise, DTH high, high occ. SL7-142 (B,235,03-18-3): 00 dead, 01 hot!, 05 warm, 01 null --> Moderate null noise, but occ dead for 143#04? SL7-344 (D,632,08-05-0): 00 dead, 00 hot!, 00 warm, 04 null SL7-345 (D,632,08-05-0): OKAY --> Slight null noise, but smeared DTH points. SL7-378 (D,693,09-06-1): 00 dead, 01 hot!, 04 warm SL7-379 (D,693,09-06-1): 00 dead, 00 hot!, 09 warm --> Large null noise, high DTH. --> From May, good calibs at rptr but might be missing 10 ohm, see sync noise 80 and 180 ns after leading output (40 ns wide). SL8-387 (D,619,18-06-3): 00 dead, 01 hot!, 03 warm, 00 null --> High occ with calib noise at high wire end. SL8-437 (D,704,19-07-0): 00 dead, 01 hot!, 07 warm, 01 null --> Null noise, probably from dead wire #08. Low-level noise cells: SL1-001 (A,008,10-19-0): 00 dead, 01 hot!, 06 warm, 00 null SL1-119 (C,547,17-04-3): 00 dead, 01 hot!, 04 warm, 00 null SL4-143 (B,377,15-05-1): 00 dead, 01 hot!, 06 warm, 00 null SL6-045 (A,070,01-10-2): 00 dead, 03 hot!, 06 warm, 00 null SL8-153 (B,230,13-15-2): 00 dead, 01 hot!, 07 warm, 00 null SL8-215 (B,353,15-16-1): 00 dead, 01 hot!, 08 warm, 00 null SL8-275 (C,431,16-16-3): 00 dead, 03 hot!, 08 warm, 00 null SL8-288 (C,438,16-14-2): 00 dead, 01 hot!, 03 warm, 00 null SL8-289 (C,438,16-14-2): 00 dead, 01 hot!, 11 warm, 00 null SL8-396 (D,664,18-04-0): 00 dead, 01 hot!, 07 warm, 00 null SL8-401 (D,666,18-04-2): 00 dead, 01 hot!, 04 warm, 01 null SL8-123 (B,195,13-19-3): 00 dead, 00 hot!, 00 warm, 03 null High-level calib shape or ASDQ problems: SL4-078 (B,249,13-08-1): W = 28.1 (32.9+/-2.1) -4.8 SL4-079 (B,249,13-08-1): W = 28.2 (32.9+/-2.1) -4.7 --> Low width, low/smeared DTH. --> From May, pos calib is double-pulsed. SL4-160 (C,418,16-07-2): 00 dead, 12 hot!, 00 warm, 00 null SL4-161 (C,418,16-07-2): 00 dead, 12 hot!, 00 warm, 00 null --> Double-pulse cells. SL5-220 (C,518,17-13-2): 00 dead, 00 hot!, 00 warm, 07 null SL5-221 (C,518,17-13-2): 00 dead, 01 hot!, 01 warm, 08 null --> Null noise, high DTH, good widths. --> Pos calib is double-pulsed (from May). SL8-232 (B,366,15-14-2): Q = 32.1 (24.0+/-2.1) +8.1 SL8-233 (B,366,15-14-2): Q = 31.6 (24.0+/-2.1) +7.5 --> High QEN widths. Low-level calib shape problems: SL1-055 (B,271,13-06-3): D = 471 (533+/-54) -62 SL3-162 (C,541,07-10-1): D = 458 (533+/-54) -75 SL4-077 (B,248,13-08-0): D = 592 (533+/-54) +59 --> 1 TRK SL5-242 (C,537,17-10-1): W = 30.6 (32.9+/-2.1) -2.3 D = 455 (533+/-54) -78 SL5-243 (C,537,17-10-1): D = 453 (533+/-54) -80 SL6-274 (C,537,07-11-1): D = 455 (533+/-54) -78 SL6-275 (C,537,07-11-1): D = 461 (533+/-54) -72 SL8-126 (B,205,13-18-1): D = 466 (533+/-54) -67 SL8-127 (B,205,13-18-1): D = 473 (533+/-54) -60 Hot/high-occupancy channels: SL1-041 (A,188,12-17-0): #00/12 N = 1.039 (1.001,0.005,0.067,1.115) SL1-042 (B,189,12-17-1): #00/24 N = 1.112 (1.009,0.010,0.116,1.113) SL2-073 (B,326,04-06-2): #01/61 N = 8.000 (8.000,8.000,8.000,2.024) SL2-074 (B,327,04-06-3): #05/77 N = 0.000 (0.000,0.000,0.000,1.417) SL2-102 (C,417,06-08-1): #01/25 D = 470 (544+/-70) -74 SL2-102 (C,417,06-08-1): #02/26 D = 460 (544+/-70) -84 SL2-102 (C,417,06-08-1): #06/30 D = 450 (544+/-70) -94 SL2-102 (C,417,06-08-1): #07/31 D = 450 (544+/-70) -94 SL2-103 (C,417,06-08-1): #00/36 D = 430 (544+/-70) -114 --> Strange drop in DTH, wid for these wires only (rest of cell OK). SL3-062 (B,195,02-12-3): #01/73 N = 1.000 (1.000,1.000,0.000,1.439) W = 21.0 (32.9+/-4.5) -11.9 D = 280 (533+/-70) -253 SL3-063 (B,195,02-12-3): #00/84 W = 24.7 (32.9+/-4.5) -8.1 --> Possible crossed wires lead to high occ, bad wid. SL3-170 (C,557,07-09-1): #00/24 N = 1.434 (1.088,0.117,0.459,1.400) SL3-170 (C,557,07-09-1): #01/25 N = 1.225 (1.030,0.026,0.243,1.272) SL3-170 (C,557,07-09-1): #03/27 N = 1.053 (1.000,0.003,0.075,1.156) --> High occ with calib noise at low wire end. SL4-094 (B,301,14-09-1): #11/35 N = 1.338 (1.119,0.145,0.488,1.420) --> High occ with calib noise at high wire end. SL5-190 (C,407,15-09-3): #09/81 N = 1.005 (1.000,0.000,0.002,1.230) SL5-190 (C,407,15-09-3): #10/82 N = 1.005 (1.000,0.000,0.022,1.300) SL5-190 (C,407,15-09-3): #11/83 N = 1.002 (1.000,0.000,0.007,1.217) SL5-191 (C,407,15-09-3): #05/89 N = 1.000 (1.000,0.000,0.006,1.384) SL5-191 (C,407,15-09-3): #06/90 N = 1.002 (1.000,0.000,0.003,1.251) SL5-191 (C,407,15-09-3): #08/92 N = 1.002 (1.000,0.000,0.018,1.541) --> High occ but calib OK. SL5-236 (C,534,17-11-2): #00/48 N = 1.162 (1.024,0.024,0.174,1.462) --> High occ with calib noise at low wire end. SL5-246 (C,539,17-10-3): #11/83 N = 5.831 (7.225,0.008,0.000,1.969) --> High occ with calib noise at high wire end. SL6-165 (B,334,05-17-2): #02/62 N = 2.476 (2.093,1.788,0.000,1.924) --> Possible crossed wire leads to high occ. SL6-182 (B,363,05-15-3): #11/83 N = 1.000 (1.000,1.118,0.000,1.640) SL6-183 (B,363,05-15-3): #11/95 N = 0.000 (0.000,0.000,0.000,0.842) --> Possible crossed wires lead to high occ. SL6-236 (C,458,06-12-2): #00/48 N = 1.000 (1.000,0.000,0.000,1.317) --> Zero-width pulse gets high occ, probably lost u-coax leg. SL7-122 (B,201,03-20-1): #00/24 N = 1.000 (1.000,1.000,0.000,2.334) SL7-123 (B,201,03-20-1): #00/36 N = 3.000 (3.000,3.000,2.000,1.904) --> Possible crossed wires give high occ. SL7-190 (B,315,04-18-3): #06/78 N = 1.013 (1.000,0.001,0.025,1.433) SL7-190 (B,315,04-18-3): #07/79 N = 1.006 (1.000,0.001,0.018,1.194) SL7-190 (B,315,04-18-3): #11/83 N = 1.016 (1.001,0.001,0.035,1.290) SL7-191 (B,315,04-18-3): #07/91 N = 1.026 (1.000,0.001,0.032,1.433) --> High occ with calib noise. SL7-236 (C,390,05-19-2): #00/48 N = 1.014 (1.000,0.000,0.000,1.822) --> High occ with no associated calib noise. SL8-120 (B,194,13-19-2): #09/57 N = 1.056 (1.002,0.002,0.062,1.546) SL8-120 (B,194,13-19-2): #10/58 N = 1.074 (1.001,0.004,0.068,1.667) --> Leftover noise from similar 8-116, 8-118 problems. SL8-138 (B,211,13-17-3): #09/81 N = 0.419 (0.026,0.004,0.000,1.753) --> High occ from single broken wire. SL8-152 (B,230,13-15-2): #09/57 N = 1.088 (1.003,0.004,0.118,1.520) --> High occ, similar to 8-116 noise. SL8-270 (C,429,16-16-1): #05/29 N = 1.022 (1.005,0.006,0.084,1.330) SL8-270 (C,429,16-16-1): #06/30 N = 1.036 (1.007,0.015,0.133,1.597) SL8-271 (C,429,16-16-1): #08/44 N = 1.011 (1.000,0.000,0.007,1.546) SL8-271 (C,429,16-16-1): #09/45 N = 1.031 (1.000,0.002,0.009,1.977) SL8-271 (C,429,16-16-1): #10/46 N = 1.013 (1.000,0.001,0.004,1.710) SL8-271 (C,429,16-16-1): #11/47 N = 1.002 (1.000,0.002,0.001,1.442) --> High occ with calib noise at high wire end. SL8-313 (C,478,17-19-2): #05/65 N = 0.000 (0.000,0.000,0.000,0.009) SL8-313 (C,478,17-19-2): #08/68 N = 1.044 (1.001,0.001,0.056,1.382) --> High occ with other dead wire (high DTH) and other low DTH wires. SL8-373 (D,612,18-07-0): #00/12 N = 1.100 (1.005,0.014,0.146,1.632) --> High occ with calib noise at low wire end. SL8-403 (D,667,18-04-3): #00/84 N = 1.000 (1.000,0.000,0.000,1.347) --> High occ with calib noise. ============================================================================== HV-related work: (progress so far) ---------------- SL1-064 (B,324,14-06-0): #10/10 N = 1.000 (1.000,0.000,0.000,0.009) W = 40.1 (32.9+/-4.5) +7.2 A = 25.5 (20.8+/-4.5) +4.7 D = 700 (533+/-70) +167 --> Extensive HV work, probably bad ASDQ motherboard. SL1-106 (C,473,16-03-1): #11/35 N = 1.998 (1.995,0.002,0.000,0.070) --> Low occ associated with HV trip. ASDQ 25 ohm fried. --> Disabled HV (tied to P12). SL1-151 (D,691,19-20-3): #01 --> Previously high YMon, but intermittent, passes COTASDQ tests. --> Will leave for now, use spy under N2 and Ar/Et at HV. SL3-061 (B,194,02-12-2): #01 --> YMon "High Occ", but passes COTASDQ. --> Will leave for now, use spy under N2 and Ar/Et at HV. --> Might be confused with SL3-062 #01, which is a high occ probably crossed with SL3-063 #00. SL4-227 (D,579,18-17-3): #05 --> Bad cap connection, and many HV problems in cell. --> Disabled HV (tied to P6), also have blown ASDQ resistor. --> Will want to crack gas seal for look in the future. --> Still need to replace ASDQ and HV daughterboard. SL7-138 (B,233,03-18-1): #05 --> Associated with HV trips. Disabled HV (tie to P6). SL7-223 (C,375,05-21-3): #00 --> YMon "high mult" = 3.2, but passes COTASDQ. --> Will leave for now, use spy under N2 and Ar/Et at HV. SL8-104 (A,178,12-05-2): #09/57 N = 1.915 (1.833,0.000,0.003,0.345) --> HVD SL8-105 (A,178,12-05-2): #07/67 N = 1.057 (1.380,0.000,0.000,1.036) SL8-105 (A,178,12-05-2): #09/69 N = 1.942 (1.927,0.011,0.048,0.389) --> HVD --> HV disabled during 9/10 access. --> May want to reinsert one resistor and test under Ar/Et. SL8-445 (D,708,19-06-0): #01/13 W = 40.9 (32.9+/-4.5) +8.0 D = 700 (533+/-70) +167 SL8-445 (D,708,19-06-0): #11/23 N = 2.000 (2.000,0.000,0.000,0.233) --> ASDQ resistor blown on #11, HV disabled (tie to P12). --> #1 does not have trip history. ============================================================================== Front-end work: (progress so far) --------------- SL2-024 (A,046,01-16-2): OKAY --> Found u-coax swapped with 2-26 at endplate as expected. --> Undid this swap and compensating swap at TDC (10/24). SL2-071 (B,325,04-06-1): #08/44 N = 0.000 (0.000,0.000,0.000,0.020) SL2-071 (B,325,04-06-1): #11/47 N = 0.000 (0.000,0.000,0.000,0.749) --> Found problems at u-coax socket (latching for #08, jumper added for #11). SL6-096 (B,236,03-14-0): 00 dead, 04 hot!, 03 warm, 05 null --> Better ground HV ribbon bundle to f-cage added. SL6-336 (D,680,09-09-0): 00 dead, 00 hot!, 00 warm, 12 null --> SL6-336:383 null noise probably due to the washer shorting to the TREF lines. --> Washer found and removed, now fixed (10-23). SL7-050 (A,089,01-03-1): 00 dead, 04 hot!, 05 warm, 00 null SL7-051 (A,089,01-03-1): 01 dead, 06 hot!, 05 warm, 00 null --> Found loose screw on angle bracket, fixed. SL7-372 (D,658,08-02-2): 00 dead, 05 hot!, 02 warm, 02 null SL7-373 (D,658,08-02-2): 00 dead, 05 hot!, 03 warm, 01 null --> Found OD angle bracket unsoldered, fixed. SL8-116 (A,192,13-19-0): 00 dead, 07 hot!, 02 warm, 00 null SL8-117 (A,192,13-19-0): 00 dead, 10 hot!, 02 warm, 00 null SL8-118 (A,193,13-19-1): 00 dead, 09 hot!, 03 warm, 00 null SL8-119 (A,193,13-19-1): 00 dead, 01 hot!, 04 warm, 00 null --> Extensive investigation here for 116-119 without much luck. --> Tried artificially increasing DTH with resistor. --> Leaving f-cage off helps. SL8-197 (B,320,15-18-0): 00 dead, 04 hot!, 08 warm, 00 null --> Original occ coincided with null noise, looked like "odd-cell". --> Now looks OK with spy and COTASDQ, so the u-coax responsible was probably moved in the process, "odd-cell" noise disappeared. SL8-199 (B,321,15-18-1): 03 dead, 00 hot!, 01 warm, 00 null --> Bad plug-in at rptr, fixed. SL8-271 (C,429,16-16-1): 00 dead, 01 hot!, 10 warm, 00 null --> Originally high occ with correlated "odd-cell" looking noise. --> Problem appears to have decreased after undoing f-cage and looking around, so not sure. SL8-363 (D,583,18-09-3): 00 dead, 04 hot!, 08 warm, 00 null --> High occ and calib noise, looks like "odd-cell" stuff. --> Problem reduced after f-cage reworking. ==============================================================================