1 / 7

Update on PN and MOS Operations for SCOS2000 Implementation

This document provides an overview of the recent developments regarding the PN and MOS systems in conjunction with SCOS2000. Key updates include the handling of offset tables for PN observations, EPCE unit reboot incidents, advancements in EMDH.K during flight tests, and the ongoing assessment of THIN1 filter degradation. Furthermore, it details the transition to SCOS2000 and the planned execution of operational modes, with expectations to fully integrate by July 2005.

liang
Télécharger la présentation

Update on PN and MOS Operations for SCOS2000 Implementation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Introduction 1) PN specific 2) MOS specific 3) SCOS2000

  2. PN specific – Offset tables • No fixed offset tables used for PN. • Dump of the offset table inserted before the Start of the Observation: + offset data information always present for an observation - increased overhead: • ~7 minutes for FF,Ext.FF, LW • 45 seconds for SW, Ti and Burst • Repetition number changed from 100 to 50 for FF.

  3. PN specific – EPCE unit • EPCE experienced an autonomous warm reboot in rev. 841: • Visible through a drop of the currents of the quadrant-dedicated converters in the EPVC • EPCE runs PROM version => reboot autonomous and smooth. No impact on science. • Investigations => same problem in rev. 741 • Actions: • NCR#114 raised • Explanation: SEU that stopped the code • Creation of a DP that detects any EPCE reboot(based on the parameter that counts the warm boot)

  4. MOS specific – EMDH K • EMDH K successfully tested in flight and definitely uploaded in rev. 807. • EMDH K improvements: • Ability to upload up to 250 bright pixels instead of 50 with version J+ • Cover the possible impact of the failure of the CCD extended range temperature sensor

  5. MOS specific – THIN1 filter assessment • Low energy patch observed on a bright source • Test to check whether this patch is due to a filter degradation (otherwise CCD degradation): • In rev. 900, on 1ES0102-72 • Filter wheel moved by 20 steps away from the THIN1 position, in the opposite direction to the calibration source. • THIN1 filter does not show degradation of its most exposed area.

  6. MOS specific – filter wheel sanity check • Routine control of the filters sanity (degradation, micro holes,…) • Diagnostic Reset Per Pixel mode used

  7. SCOS 2000 • XMM-Newton shall be operated with SCOS2000 • Rev. 940, fully executed via SCOS2000 (TC,TM) • All modes have been planned • TM comparisons with respect to SCOS1, FITS file comparison • Next rev. = rev. 954 • Expected to switch to SCOS2000 in phase 3 by April 2005 • Definite use of SCOS2000 (phase 4) 3 months later (July 2005)

More Related