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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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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


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


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


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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