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Module Production ___________ Report on the Catania Status

Module Production ___________ Report on the Catania Status. Salvatore Costa Universit à di Catania and INFN – Sezione di Catania. Outline. Module accounting Bonding: Production rate Bonding experience Pull Test results Failure analysis ARCS & LT Tests ARCS test analysis

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Module Production ___________ Report on the Catania Status

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  1. Module Production___________Report on theCatania Status Salvatore Costa Università di Catania and INFN – Sezione di Catania

  2. Outline • Module accounting • Bonding: • Production rate • Bonding experience • Pull Test results • Failure analysis • ARCS & LT Tests • ARCS test analysis • LT test analysis • Usage of central DB • Logistics & transportation of modules

  3. Module Accounting

  4. Production Rate • Initially slow due to bonding commissioning (we lacked long-standing experience with previous bonding jobs), but now on schedule. To illustrate our progress…: • First box received, with 8 Modules, was completed (bonded + ARCS tested) 23 days after arrival • Last 2 boxes, with 9 Modules each, have both been completed within 2 working days after arrival • Current bonding capability is4-5 Modules/day • Long Term keeps up with no difficulty with current incoming flux of ~1 9-Module box / week

  5. Bonding Experience • Became full-blown Bonding Center on 5 Dec 2003 • Previously designated Bond Repair Center • Had passed official CMS Qualification Tests (“bond test # 1 & 2”) • Bonding experience with previous experiments: none • Equipment: • 2 Hughes 2470-II bonders • 1991, 1987 • automatic but no Pattern Recognition or bond foot deformation feedback • 1 ATV GM-100 pull tester • manual • Machine downtimes: each time a new machine fault occurred that we had not seen before. Time spent to learn to locate the source of the fault, what action to take and with what procedures. Higher probability of bond failures or accidents

  6. Bond Pull Tests Results IB34 IB12phi sampling 5g

  7. Bond Failure Analysis

  8. Bond PA-Sen in TIB L1&2 correct misplaced

  9. ARCS Test Analysis • All tests performed following the official TIB procedure • ARCS 7.0 used for long time (7.1 installed & operational but not yet fully tested) • Tony’s macro used initially, starting mid March Riccardo’s update (now v3.1.0) • Flagging efficiency with Riccardo’s macro: ~ 100% • Out of 53 good modules, 51 are grade A, only 2 are grade B • No IV problems • A total of 55 defective “strips” found over 34048 bonded strips • 29 caused during bonding • 26 pre-existing: Sen pinholes + APV-PA bond opens + Hyb faulty chan open chan

  10. ARCS Analysis: IV We wrote a script which queries DB to compare measured IV with the Sensor one. We also implemented Temperature correction. NO IV problems up to now IV data not available for all the sensors

  11. Long Term Test Analysis 49 modules tested with TIB Official Scenario (about 72 h) • Some modules retested with a 1-night scenario due to failure on the last record • First, cold & last records always recorded • Some failures of the sw before Marco’s patch on I2C • 1 failure due to DAQ problems with Lt_1.22 • No failures since Lt_1.24 was installed • Riccardo’s macro used for the analysis (now v3.1.0) • No new defective strips appeared after LT test • From time to time some noisy strips appear and disappear

  12. 3 Bad Modules In 3 Modules, all from the very last group of Modules received, we have observed plain failure of the ARCS Test after bonding (they had passed with flying marks the test upon arrival): • 2 Modules (30200020035289, 303) fail Fast Tests’ Low Voltage test: I(V2.50) = ~850 mA (max 750 mA) • Bonds are among the best we’ve made, both mechanically and aesthetically • No visually evident damage from possible mishandling • ESD? • 1 Module (30200020035305) fails to power up the Hybrid • Damage to connector? • Has something changed in our working environment or procedures? • All these modules’ Hybrids are marked with Alan’s blue dot • Deep investigation needed to understand these problems

  13. Usage of central DB • Bonding dataalways timelyuploaded to TrackerDBsince the beginning • for all ARCS & LT data, xFLAG 1.4.3 has been used to produce XML files: 53 ARCS + 49 LT • XML files checked for consistency with root files and macro’s output • No serious problems reported • Only few root files need to be redone due to old ARCS bug in the header • 86% of ARCS XML files already uploaded • LT XML files not yet uploaded

  14. Logistics & Transportation • No major problems with modules received from Bari • In first 2 boxes only the styrofoam blocks on the sides were too far apart, so Modules (on transport cradles) slipped out of their slots, but no damage to the modules resulted. Problem was quickly corrected in newer boxes • Some dirt (mainly small [fabric?] fibers) • We blow a 1.5 atm air jet on Module before starting visual inspection • Our storage space in clean room can hold ~8 more boxes (72 Modules), • After, better to start shipping to Pisa • or we will have to figure out how to carve out more storage space

  15. The Catania CMS Module Production Crew ARCS & LT Test Inspection, Test on arrival, Bonding S. Costa, N.Giudice, F.Noto, F.Raimondo, C.Sutera, C.Tuve S. Albergo, M. Chiorboli, M. Galanti, G. Gatto, A.Tricomi

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