PHASE II FLIGHTSAFETY REVIEW AMS02 EXPERIMENT subdetector SILICON
PHASE II FLIGHT-SAFETY REVIEW AMS-02 EXPERIMENT sub-detector SILICON TRACKER Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007
AMS 02 – Building Blocks Silicon Tracker is a tracking detector and it is the core of AMS-02. It is surrounded by the others sub-detectors or sub-systems. Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 2
The AMS 02 Detector Silicon Tracker Z, P, g Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 3
Characteristics of AMS-02 Δ t = 100 ps, Δx = 10 µm, Δv/v = 0. 001 e– P He, Li, Be, . . Fe g e+ – – P, D He, C TRD TOF Tracker RICH ECAL y 06 K 307 Physics example Cosmic Ray Physics Strangelets Dark matter Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 Antimatter 4
Silicon Tracker It is composed by: - 3 inner double face detector plane - 2 single face detector plane Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 5
Silicon Tracker Each Ladders is a multi-wafer silicon detector, with the read-out electronics Assembly view Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 6
Silicon Tracker Each plane is composed by many: “Ladders” Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 7
Tracker - Ladder Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 8
Vibration tests of the cables and connexions Mechanical behaviour and fixation scheme were studied thanks to the vibration table of University of Bern. Mr Beat Zahnd cable alone cable bundle connexions/cables for a 3 -layer column • No problems found for cables, connectors and connexions Robertobetween Battiston - AMS-02 Phase II Safety Review - Houston JSC Mayvacuum 21 -25, 2007 case) • Distance cable fixations were determined (for 9
Plane 1 Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 10
Silicon Tracker The final configuration of the Tracker, is done by adding: - external shells; - The upper and lower conical flange; Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 11
FM AMS-02 Silicon Tracker Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 12
Silicon Tracker Design Partially re-flown hardware (shell and honeycomb planes) AMS-01 – STS-91 mission ‘ 98; Main assessment for Tracker, have been: -Bolt Analysis (NSTS 08307 Tracker Bolt Assessment. pdf) -Declared Material List (AMS_Tracker_DMLv 2. xls) -Fracture of Composite (Memo_Fracture_control_composite. doc) -Venting Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 13
Tracker - Venting To equalize the pressure inside the Tracker with the pressure in the payload bay during launch and landing, the Upper and Lower Conical Flanges each contain two light traps, filtered vents. Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 14
Tracker - Venting The four light tight, filtered vents permit air to exit or enter the enclosed Tracker volume of 40. 26 ft 3 Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 15
TTCS – Tracker Thermal Control System The Objective of TTCS is to provide accurate temperature control of AMS 02 Tracker front-end electronics. We use: Two redundant CO 2 two-phase pumped loops – Primary loop – Secondary Loop TTCE Tracker Thermal Control Electronics Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 16
TTCS System Overview Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 17
TTCS – Tracker Thermal Control System SYSTEM COMPONENTS - Top and bottom INNER (tracker) EVAPORATOR - Top and bottom OUTER (Tracker) EVAPORATOR - Electronic Boxes: TTCB primary and secondary - TTCE - 4 Condensers (RAM and WAKE side of AMS) - 2 Radiators (RAM and WAKE side of AMS) Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 18
Tracker radiators TTCS Condensers are attached to the Tracker radiators Tracker TTCS box envelopes (locations) Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 19
TTCS – Tracker Thermal Control System Inner Evaporator 192 Hybrids each producing 0. 75 Watts of heat (144 W total) Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 20
TTCS – Tracker Thermal Control System Outer Evaporator tubing upper inner and outer ring Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 21
FM evaporator Tracker Thermal Control System Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 22
TTCS Box accumulator Abs. P-sensor Cold orbit heater Heat exchanger Diff. P-sensor Swagelok weld couplings Cover with ext. connectors Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 23
Pump is an adapted Mars Pathfinder rover pump by PDT • Centrifugal pump • Successful CDR in September 2006 Pump Controller EM Pump Roberto Battiston - AMS-02 Phase II Safety Review - Houston JSC May 21 -25, 2007 24
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