Module Production and Testing at Duke Jack Fowler

Module Production and Testing at Duke Jack Fowler February 2001 Duke, Jack Fowler

Production Status Fowler Duke HEP February 2001

Module Straightness · Module 2. 1 u 200 microns · Module 2. 2 u 150 microns · Module 2. 5 u 175 microns · Module 2. 6 Initial u 125 microns · Module 2. 3 u 125 microns · Module 2. 4 u 150 microns Fowler Duke HEP February 2001

Module 2. 5 Straw Alignment Fowler Duke HEP February 2001

High Voltage Testing · High voltage plates are tested u u u u u initially from supplier after the Kapton forming process after insertion of straws after 1 st end outer wire supports are conductive glued after 2 nd end outer wire supports are conductive glued after sealing glue is applied to outside of HV plate after potting of inside of module after stringing after final gluing and leak test Fowler Duke HEP February 2001

High Voltage Testing (2) · High voltage plate tests includes: u u u visual inspection dimensional inspection continuity tests resistance values high voltage breakdown up to 3 k. V current draw Fowler Duke HEP February 2001

High Voltage Testing Results · Module 2. 1 u u Pad 63 and 64 short Pad 53 trips @ 2 k. V Pad 46 trips @ 2 k. V Pad 36 trips @ 2. 1 k. V · Module 2. 2 u Pad 20 and 30 short · Module 2. 3 u u Pad 3 to 4 trip @ 2. 3 k. V Pad 9 to 10 trip @ 1. 8 k. V Pad 26 and 37 short Pad 60 and 61 short Fowler Duke HEP · Module 2. 4 u u Pad 15 trips @ 2. 3 k. V Pad 54 trips @ 2. 3 k. V · Module 2. 5 u no problems through mechanical assembly · Module 2. 6 u no problems through acceptance test February 2001

Straw Resistance Testing · Straw resistance is tested at Hampton prior to shipment · During production straw resistance is tested: u u after straw insertion and the first end outer wire supports are conductive glued. This is an individual resistance. After second end outer wire supports are glued. This is a group resistance between pads. Fowler Duke HEP February 2001

Straw Resistance Testing Results · Module 2. 1 u u No straws over 200 ohms Pad resistance range 5. 8 to 7. 5 ohms · Module 2. 2 u u No straws over 200 ohms Pad resistance range 5. 6 to 7. 0 ohms · Module 2. 4 u u 6 straws over 200 ohms Pad resistance range 4. 8 to 8. 0 ohms · Module 2. 5 u u 1 straw over 200 ohms Pad resistance range 5. 2 to 7. 5 ohms · Module 2. 3 u u 96 straws over 200 ohms* Pad resistance range 5. 6 to 8. 0 ohms Fowler Duke HEP February 2001

Module 2. 5 Individual Resistances Fowler Duke HEP February 2001

Module 2. 5 Island Resistance Fowler Duke HEP February 2001

Leak Test Results · Module 2. 1 u · Detection Limits no detectable leak · Module 2. 2 u no detectable leak · Module 2. 3 u no detectable leak · Module 2. 4 u no detectable leak · Module 2. 5 u no detectable leak Fowler Duke HEP February 2001

Stringing Results · Module 2. 1 u u 21 days to string 12 wires arc, restring · Module 2. 2 u u 21 days to string 37 wires arc, restring · Module 2. 3 u u 16 days to string 20 wire arc, restring Fowler Duke HEP · Module 2. 4 u u 14 days to string 12 wires arc, restring · Module 2. 5 u in process · Improvements made u u deburr twisters change lead wire February 2001

Stringing Stations Fowler Duke HEP February 2001

Module Completion Summary · Module 2. 1 u u Straw 83, stringing problem, dead channel Straw 400, stringing problem, dead channel · Module 2. 2 u Straw 292, stringing problem, dead channel · Module 2. 3 u no problems · Module 2. 4 u Straw 48, straw leak, dead channel Fowler Duke HEP February 2001

Module Weights · Module 2. 1 u 4. 28 kg · Module 2. 2 u unable to measure, gain testing · Module 2. 3 u 4. 37 kg · Module 2. 4 u 4. 22 kg · Module 2. 5 u 3. 97 kg before stringing Fowler Duke HEP February 2001