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PACS Status Report - WE SVR-2 MPE , 1 8 Jan 200 7 O.H. Bauer

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PACS Status Report - WE SVR-2 MPE , 1 8 Jan 200 7 O.H. Bauer. FM ILT: WE Configuration. DPU FM SPU FM (partly repaired) DECMEC EQM (not redundant and only blue array) BOLC FM Second set-up used for SPU OBS development. FPU Cold FocalPlaneUnit. BOL/COOL. BOL/BAU. DEC/MEC 2.

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slide1

PACS Status Report - WE

SVR-2

MPE, 18Jan 2007

O.H. Bauer

fm ilt we configuration
FM ILT: WE Configuration
  • DPU FM
  • SPU FM (partly repaired)
  • DECMEC EQM (not redundant and only blue array)
  • BOLC FM
  • Second set-up used for SPU OBS development
slide3

FPU Cold FocalPlaneUnit

BOL/COOL

BOL/BAU

DEC/MEC 2

DEC/MEC 1

SPU nominal

BlueBol BAU

MEC I/F-Module Redundant

BOL 1 Module

BlueGe:GaArray &CRE MPE/ASTEQ/IMEC

MEC I/F-Module

IAC-Tenerife/TU-Wien

DPU nominal

DSP Module Redundant

RedBol BAU

BOL 2 Module

BlueBolArray &Read-out CEA

DSP Module

SPU redundant

CEA

Cooler Control

Warm Interconnecting Harness

RedDEC Module

RedBolArray &Read-out CEA

BlueDEC Module

IAC-Tenerife/TU-Wien

DPU redundant

CEA

Base/PSU Redundant

RedGe:GaArray &CRE MPE/ASTEQ/IMEC

Base/PSU

IFSI-ROME

CSL-Liege

CSL-Liege

0.3K Cooler CEA

Grating Assy CSL-Liege

Chopper Assy MPIA

2FilterWheels KT

2CalSources KT

KT/MPE

Instrument Overview and Subsystem Responsibilities

Cryo-Harness

13

slide4

WE Status I

  • DPU
  • Problems in CFM identified (ringing of bus lines) and S/W work-around implemented
  • FM apparently does not show the same symptoms, but showed some erratic behaviour (MEMCOPY routine caused corrupted data packets)
  • SPU, DECMEC (but also LFI REBA, ...)
  • During tests at CRISA read errors from the DSP program memory (PRAM), only with special memory contents, were found.
  • Error was found on all DSP PCBs  systematic design error!
  • PACS FM SPU partially repaired, can be used for FM ILT.
  •  Complete repair and re-qualification after ILT will take four weeks.
  • BOLC: OK
slide5

WE Status II

  • DECMEC
  • During TV test (cold phase, -25°C) DECMEC FM stopped after one hour of operation: two dead transistors found, temperature/design problem

Delivery of qualified FM (not EMC: can be done after FPU delivery) later than mid Feb has dramatic impact on ILT schedule and delivery

Most of ILT has to be executed with EQM, which is not fully FM-equivalent (lacking redundancy, only blue DEC)

Change to red array and swap of EQM against FM need warm-up to 40 K

schedule
Schedule
  • Schedule Summary FM (refurbished CQM for FPU)
    • ILT at MPE: cool down started 19 Oct 06
    • Partial warm-up/cool-down forchange to red Ge:Ga array 16/19 Dec 06
    • Warm-up/cool-down for exchange
    • of chopper, repair of illumination
    • problem and possible DECMEC
    • exchange23 Dec 06 – 18 Feb 07
    •  DECMEC FM delivery to MPE mid Feb 07 ??
    • FM WE/FPU delivery to Project late April 07 !?
  • Schedule for FS FPU
    • FS FPU ready for possible
    • delivery to Project end Sep 07
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