LUMI SPECTROMETER LOG FILE -------------------------- For Netscape users: ************************************************* * Please press RELOAD to get the latest update! * ************************************************* BPCn Tests ---------- o X Scans (Y=0): COMPLETED Date Runs Comments ------------------------------------------------- 24-26/Jan/01 71-131 X=-70mm to +70mm, Y=0. o Y Scans (X=0): COMPLETED Date Runs Comments ------------------------------------------------- 26/Jan/01 132-152 Y=-70mm to -29.9mm, X=0. 27/Jan/01 153-203 Y=-28mm to +74mm 28/Jan/01 204-273 Y=-28mm to +74mm at 3GeV only T1.and.T2.and.T3 applied. o HV Trimming: COMPLETED Date Runs Comments ------------------------------------------------- 28/Jan/01 278-292 Take data on centers of Y strips to check the trimming. Do not use the offline veto .not.S3 (3mm hole). 28/Jan/01 293-307 X strips 29/Jan/01 318-388 Detailed scan (2mm steps) X strips 30/Jan/01 389-465 Y strips BPCs Tests ---------- o First BPCsouth Studies: COMPLETED Date Runs Comments ------------------------------------------------- 31/Jan/01 495-508 First Data, check response and cabling. We found the center to be at: X=350, Y=-125mm 31/Jan/01 509-514 First Energy Scan in the middle. o X and Y scans to determine the gains: COMPLETED Date Runs Comments ------------------------------------------------- 01/Feb/01 517-602 X scan from X=260 to X=430 we use only 250 events/run at 5GeV beam because sigma/sqrt(N)=9%/15 i.e. less than 1%. We used the socalled TLT3 i.e. T1.and.T2.and.T3 with offline trigger the 3mm hole counter cut. 02/Feb/01 604-666 Y scan from Y=-175 to Y=-60 o BPCs HV Trimming: COMPLETED Date Runs Comments ------------------------------------------------- 03/Feb/01 667-742 X scan (Y strips) to determine the quality of the trimming. We found the RMS of the gain variation to be just 1.5%. 04/Feb/01 743-802 Y scan (X strips). o BPCs Scintillator Attenuation Studies: Date Runs Comments ------------------------------------------------- 06/Feb/01 815-879 Y scan at X=315mm (center is at X=350mm) from Y=-170 to -56mm 07/Feb/01 880-940 Y scan at X=385mm (center is at X=350mm) from Y=-170 to -44mm 08/Feb/01 941-1017 X scan at Y=-75mm (center is at Y=-125mm) from X=276 to 426mm o BPCn Scintillator Attenuation Studies: Date Runs Comments ------------------------------------------------- 09/Feb/01 1028-1098 Y scan at X=-36mm (center is at X=0mm) from Y=-70 to +70mm 09/Feb/01 1099-1169 Y scan at X=+36mm (center is at X=0mm) from Y=-70 to +70mm 10/Feb/01 1170-Now X scan at Y=-40mm (center is at Y=0mm) from X=-65 to +65mm