cryo harness, test cryo harness
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Cryo Harness 1
PACS IHDR
12/13 Nov 2003
Cryo Harness, Test Cryo HarnessCryo Harness, Test Cryo Harness
Martin von Berg
PACS IHDR
Cryo Harness 2
PACS IHDR
12/13 Nov 2003
Test Cryo Harness
• Cryostat internal (FPU to FTH): ready, integrated and tested. Only 128 Pin FTHs were used; cable lengths comparable to PFM Harness
• Additional Test Optics Harness also ready• Cryostat external (FTH to BOLC + DECMEC):
under CEA and CSL responsibility; to be delivered with AVM WEU of BOLC and DECMEC; cable lengths comparable to PFM Harness; Aluminium Braid as over shield
• Test for complete Harness planned• No separate SVM Harness built
Cryo Harness 3
PACS IHDR
12/13 Nov 2003
AVM ILT CVV Internal Harness
Cryo Harness 4
PACS IHDR
12/13 Nov 2003
FTH Strained Relief
Cryo Harness 5
PACS IHDR
12/13 Nov 2003
MDM Strained Relief
Cryo Harness 6
PACS IHDR
12/13 Nov 2003
Cryo Harness
• PACS-MA-SP-001, Iss. 3.2 is the relevant specification document. All CR (0028, 0032) are agreed and accepted.
• Manufacture status is under Astrium responsibility: CDR at CASA in CW 47/03, Prod. already started
• Routing on CVV, bundling and pinning were checked and agreed
• EQM harness for EQM ILT is longer than PFM harness (~ 15 cm)
• Maximum cable shield pigtail lengths are not yet clarified. IID-A, 3draft2, §5.14.2.9. Defines max. unshielded length of max. 8 cm at connectors. Acceptable, if it is on both sides of the connector.
Cryo Harness 7
PACS IHDR
12/13 Nov 2003
PACS CVV External Cryo Harness DesignCourtesy
of Astrium
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