Status of Gain Mapping at Duke Seog Oh

Status of Gain Mapping at Duke Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

Status · Certification u u Module M 2. 15 and M 3. 14 were used for Duke mapper certification. s Two sets of data were taken from each module and compared. The detail results were reported (DUKHEP 03 -04 -15, and DUKHEP 03 -06 -10) s Slope correction is ~1% for M 2. 15 and ~1. 5% for M 3. 14. The sign of the slope correction is opposite for unknown reason. s (d. G 1 -d. G 2) distribution is fitted and sigma of ~0. 5% is obtained => repeatability: ~0. 5% s Wirelist is consistent from one measurement to the other. · Data u u u PAW based (Linux or PC operating system) All relevant HBOOK files and kumac files are at Duke ATLAS web page – download the files and run PAW Detail plots can be easily made with kumac files Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

· Passport u Necessary plots can be easily produced including the required wirelist. · Data Base u We are working to simulate Hampton data structure in EDMS. Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

Gain variation (M 2. 15, M 3. 14) · M 2. 15 <front side> 1 st (left) and 2 nd (right) measurement M 3. 14 <both sides> 1 st (*) and 2 nd (dashed) Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

d. G 1 -d. G 2 Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

d. G 1. vs. d. G 2 Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

Plan/Summary · We are ready to scan Type II and Type III modules. u u M 2. 15 and M 3. 14 can be sent to CERN. Can scan 2 modules/week · No immediate plan to scan modules at Duke, but… u What are our long range goal? · Need a well define procedure for the wirelist u Who, How? Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

Module Quality Assurance Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

Define Goal · The modules should not fail after assembly u Are we doing the right tests? s Revisit the procedures, specs. Are specs latest/attainable? – – – u Module leak rate: 1 mb/b/min Purging volume leak rate: 1 mb/min at 5 mb Current draw: < 50 n. A/HV feed No arcing Number of dead straws: < 1% Wirelist • Is 8% cut for d. G/G good enough? • Should we restring the hung wires with d. G/G > 5% (~250 micron offset) Are the assembly procedures ‘safe’? · Meeting the assembly schedule u Assembly would start early 04 and ends early 05 based on the BSS and electronics schedule. Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

Offset. vs. d. G/G F. Kaioumov, K. Kruger, S. Mouraviev, L. Vassilieva Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

Readiness · Initial acceptance at Duke/IU u u · Gain mapping u u · Very important for the rest Slow but on track Picking up speed Is producing the wirelist well defined? Who? How? 154 status u Fixtures are not complete s ~50% are ready – HV tester, MGM, and may have to duplicate some fixtures – data base u u Not enough experts s Re-inventing wheels No realistic time estimation in processing a module – – – s Initial checking: 1 day Tension test: 1 day HV test (initial/final): 1 day Gain map (partial) & rework : 2 day Leak Test: 1 day Contingency : 3 days ~10 days/module Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

· Thoughts on 154 u u u Bring up all necessary fixtures and exercise ASAP Send experts and train Get a written procedure for processing modules and test the procedure. s Good tracking mechanism of each module – Done-list, to-do-list Any arriving trained person should be productive right away Accommodate the travel limitation s Send modules in bulk s Set up a (web) schedule that people can sign up s u Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN

How we proceed from here · Need to see the big picture including assembly u Many unknowns for assembly s Assembly is likely in “crunch” mode due to electronics and BSS schedule s Need contingency. . schedule/resources… the more, the better · Proceed with module processing in gain map and in 154 fast by concentrating resources u u After September, there will be “freed resources” ->gain mapping and in 154 Let us concentrate resources in assembly · Proposal u u Gain map at Hampton and Duke – 12 modules/month minimum Increase resources in 154 after September to process >12/month Seog Oh/ Duke University/June, 2003 TRT/ ATLAS week at CERN