Duke Modules Final QA Jack Fowler Duke University

Duke Modules Final QA Jack Fowler Duke University Spain Workshop - 2003

Final Mechanical Completion Steps Stringing – HV and Tension Test All wires draw less than 10 u. A at 1. 7 k. V in room air Tension 128 to 170 Hz Complete through M 2. 36 and 3. 30. ~ 800 wires left to string Ground Wire Solder to Tension plate and epoxy to shell Complete through M 2. 34 and 3. 30 Sealing Modules Seal all eyelets and fill all shell holes with epoxy Complete through M 2. 33 Dimension Test Module fits length and stay clear fixtures. Module Weight Completed as modules are shipped to Hampton University Jack Fowler Spain Workshop 2003

Final QA Testing HV Testing /Current prior to Signal Test Ar-CO 2 and Air All wires hold 1600 V Currents typically 200 n. A Complete thru M 2. 30 and 3. 30 Ionization Leak Test Current spec < 1 mbar /bar/min Old Spec < 0. 1 mbar/min Complete thru M 2. 25 and 3. 28 Purging Volume Leak Test < 200 mbar/min Complete thru M 2. 25 and 3. 28 Signal Test Ar-CO 2 at 1550 V Complete through 2. 30 Jack Fowler Spain Workshop 2003

Module Weight ¢ Type l l Average weight = 4260 grams Sigma = 48 grams ¢ Type l l 2 Modules 3 Modules Average weight = 6492 grams Sigma = 57 grams Jack Fowler Spain Workshop 2003

Ionization Leak Test Results Jack Fowler Spain Workshop 2003

Purging Volume Leak Results Jack Fowler Spain Workshop 2003

Mechanical and HV Discrepancies ¢ Capacitor barrel leaks l ¢ Cooling sleeve tears l ¢ 17 modules HV Trips (to neighbor groups) l ¢ 3 modules Shell extending beyond boundaries l ¢ 4 modules 10 modules Shorted HV Groups to each other l 4 modules (but none to Shell!!!) Jack Fowler Spain Workshop 2003

Wire/Straw Discrepancies ¢ Wire shorted to straw ¢ Wire impossible to string ¢ Wire left inside straw ¢ Straw leaks ¢ Noisy wires at Signal Test ¢ Socket/Eyelet not connected ¢ Wire anomaly from Gain Map Jack Fowler Spain Workshop 2003

Wire/Straw Status ¢ “DEAD” l l l straw Cannot hold HV Leak Impossible to string ¢ “REMOVED” but can be restrung and tested at CERN 154 ¢ “AS IS” but will be retested or restrung at CERN 154 Jack Fowler Spain Workshop 2003

Module 2. 20 Jack Fowler Spain Workshop 2003

Module 2. 23 Jack Fowler Spain Workshop 2003

“AS IS” Wires and Straws Jack Fowler Spain Workshop 2003

“REMOVED” Wires and Straws Jack Fowler Spain Workshop 2003

“DEAD” Wires or Straws Jack Fowler Spain Workshop 2003

Summary of Modules ¢ ¢ ¢ All modules are functional No major defects on any of the modules 0. 56 % of the straws have any issues, as is, removed and dead (107 out of 19071) 0. 13 % are Dead leaving DUKE (25 out of 19071) All will be complete and shipped to Hampton in 2003! Jack Fowler Spain Workshop 2003