Progress On TRD Gas System AMS TIM at

Progress On TRD Gas System AMS TIM at CERN TRD Splinter Meeting July 27, 2005 Martina Green July 27 2005 Martina Green 1

Schematic of the AMS-TRD gas system. All pressures are at 25 C. Box S Manifolds Box C Xe 1550 psia Mixing Vessel D 200 psia 17. 6 -20. 4 psia TRD 300 Liters CO 2 940 psia July 27 2005 Martina Green 2

Box S Sub-assemblies July 27 2005 Martina Green 3

Box S Pressure Relief Valve July 27 2005 Martina Green 4

Status of Flight Module • CO 2 and Xe vessels and bosses (Ardé): ready • Burst disks (BS & B Safety Systems): in hand @ MIT • Relief valves for Box S (Marotta): in hand @ MIT • Flight qualified cables (Glenair): In hand @ MIT • Brackets for Fill/Vent/Tower valves: CERN MIT • Three Sub-assy. pre-assemb. MIT Ardé (05/2005) July 27 2005 Martina Green 5

Preassembled Flight Sub-assemblies 2 -Valve GP 50 July 27 2005 Martina Green 6

Preassembled Flight Sub-assemblies 2 -Valve Filter July 27 2005 Martina Green 7

Preassembled Flight Sub-assemblies 4 -Valve July 27 2005 Martina Green 8

Box S Sub-assemblies Box S July 27 2005 Martina Green 9

Arde Production Schedule August July 27 2005 Martina Green December 10

Box S - Mounting Platform • Completed Arde (07/2005) Box S Mounting Platform Shipping Unit July 27 2005 Martina Green 11

Open Issues with Flight Module • Vessels heaters • Foil or stick : waiting for Arde’s feedback • Installation: Arde or MIT • Thermostats: Thermostats to be finalized & ordered • TRD heaters: Power? (UB’s details) • Xe/CO 2 vessesl: Fill Location & Procedure • Arde Contract: Subcontract? July 27 2005 Martina Green 12

Box S EM - Previous Status • Passed vibration test at ENSA (12/2003) • Reduced 1 st Buffer Vol (10/2004) CO 2: 15 5 c. c. Xe: 30 15 c. c. • Box S + Box C MIT: cabling/manual tests (11/04) • D-Vessel: D-Vessel added a ss tube w/1 -mm holes (11/2004) July 27 2005 Martina Green 13

Mixing Vessel Modification July 27 2005 S. S. Tube: with 1 mm holes Martina Green 14

Progress of Box S – EM at MIT • Portable clean room: perform manual tests • Ardé visited MIT: (02/2005) • Visits of INFN-Rome & A. Lebedev @ MIT (03/2005) • updated w/ flight module USCM (Lebedev) • new gas mixing software (Rome & Lebedev) • tested & evaluated software • CO 2 & Xe transfers tests: validate buffer volume July 27 2005 Martina Green 15

CO 2 Fill in Vessel D July 27 2005 Martina Green 16

Xe Fill in Vessel D July 27 2005 Martina Green 17

CO 2 – Xe Transfer from Vessel D to Box C July 27 2005 Martina Green 18

EM 10 -day Xe/CO 2 life cycle Study • Xe/CO 2 1% Flight mass – completed Xe (13. 4 mole/L): 27. 5 L, 48. 5 kg 300 m. L, 500 g CO 2 (9. 9 mole/L): 13. 3 L, 5. 8 kg 150 m. L, 65 g CO 2 July 27 2005 Xe Martina Green 19

High Pressure CO 2 Fill Setup July 27 2005 Martina Green 20

High Pressure Xe Fill Setup July 27 2005 Martina Green 21

10 -Day Life Cycle Study Result July 27 2005 Martina Green 22

Current TRD Progress • EM of Box S + C Rome (electronic integ. 07/2005) • Xe & CO 2 vessel fill procedure: MIT/Linde • Box C (Flight): being fabricated (G. Rybka) • Rest of Box S components Arde ~08/05) July 27 2005 Martina Green 23

Phase II Safety Data • Pressure System Table: No open issues • Other safety requests fulfilled: • Fill/Drain of S, C & M - locations & procedures • Vessel fill port seal cap - design/drawing • CO 2 freezing issue – detailed writeup to follow • Radiation Hazard Report request • New monitor tube design & location • Fe 55 loading July 27 2005 Martina Green 24

Monitor Tube Location July 27 2005 Martina Green 25

Monitor Tube – New Design July 27 2005 Martina Green 26

Quantity of Fe 55 Loading July 27 2005 Martina Green 27