Detector 9

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  2015-236-20:42:45 /itmon value=AFE8 (Detector 9 events turn on)
  2015-236-20:42:45 /itmon value=AFE8 (Detector 9 events turn on)
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* On Sept 9-11, 2015, the rear D9 ULD rose, finally going crazy and maxing out on Sept 11.  Since events were off, this wasn't noticed until Sept. 28.  To try and avoid/mitigate potential damage to the detector, we lowered the HV on D9 on Sept. 29 PDT (Sept. 30 03:00 UTC) from ~800V to 490V.  We briefly turned on events for G9 as well.  Events were then turned off again at eclipse entry.  This should be checked as soon as we get the monitor rate data on it.
+
* On Sept 9-11, 2015, the rear D9 ULD rose, finally going crazy and maxing out on Sept 11.  Since events were off, this wasn't noticed until Sept. 28.  To try and avoid/mitigate potential damage to the detector, we lowered the HV on D9 on Sept. 29 PDT (Sept. 30 03:00 UTC) from ~800V to 490V.  We briefly turned on events for G9 as well.  Events were then turned off again at eclipse entry.  The ULD event rate should be checked as soon as we get the monitor rate data on it.  The detector stayed segmented.
  2015-273-03:00:43 /itmon value=AFE8 (Detector 9 events on)
  2015-273-03:00:43 /itmon value=AFE8 (Detector 9 events on)

Revision as of 22:24, 30 September 2015

This page contains information about changes/issues for RHESSI detector 9 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: Detector 9 anneal 2012

Contents

Notes

Detector 9 is SEGMENTED after the 2014 anneal!

 15-008-17:45:50 /IDPUTABLE9 OFFSET=REARFASTDAC
 15-008-17:46:04 /IDPULOAD VALUE=0x50           ;(was 0x45)
 15-021-23:33:58 /idpudumptabl table=dibtbl9
 15-021-23:34:03 /idputable9 offset=rearfastdac
 15-021-23:34:34 /idpuload value=0x58
 15-021-23:36:47 /idputable9 offset=rearfastdac
 15-021-23:36:55 /idpuload value=0x60
 15-057-18:43:13 /IDPUTABLE9 OFFSET=rearfastDAC
 15-057-18:45:14 /IDPLOAD VALUE=0x68
 15-057-20:21:52 /IDPUTABLE9 OFFSET=REARFASTDAC
 15-057-20:22:09 /IDPLOAD VALUE=0x70
 15-064-19:39:50 /IDPUTABLE9 OFFSET=REARFASTDAC
 15-064-19:40:12 /IDPLOAD VALUE=0x80  ; was 0x70
 2015-070-22:46:04 /IDPUTABLE9 OFFSET=REARFASTDAC
 2015-070-22:46:19 /IDPLOAD VALUE=0x90
 15-072-22:06:18 /IDPUTABLE9 OFFSET=REARFASTDAC
 15-072-22:06:31 /IDPLOAD VALUE=0xA0
 15-075-19:24:13 /IDPUTABLE9 OFFSET=REARFASTDAC
 15-075-19:24:28 /IDPLOAD VALUE=0xB0
 15-077-TBD /IDPUTABLE9 OFFSET=REARFASTDAC
 15-077-TBD /IDPLOAD VALUE=0xC0
15-084-21:07:00 /IDPUTABLE9 OFFSET=REARFASTDAC
15-084-21:07:14 /IDPLOAD VALUE=0xFF
15-084-19:26:07 /ihvdac detector=9, voltage=176
15-084-19:27:17 /ihvdac detector=9, voltage=166
15-084-19:28:33 /ihvdac detector=9, voltage=156
15-084-21:05:17 /ihvdac detector=9, voltage=136 (2622 V)
15-097-19:58:06 /IDPUTABLE9 OFFSET=FRONTFASTDAC
15-097-19:58:14 /IDPLOAD VALUE=0x30 ; was 0x22
15-104-14:09:00 /IDPUTABLE9 OFFSET=FRONTSLOWDAC
15-104-14:09:12 /IDPLOAD VALUE=0x1A
2015-133-19:09:39 /IDPUTABLE9 OFFSET=FRONTFASTDAC
2015-133-19:09:52 /IDPLOAD VALUE=0x40  ; was 0x30
15-232-22:21:09 start idib_chg_thrshld (9, FRONT, FAST, 0x90)
15-232-22:21:38 /IDPUDUMPTABL TABLE=DIBTBL9
15-232-22:21:38 /IDPUTABLE9 OFFSET=FRONTFASTDAC
15-232-22:21:46 /IDPLOAD VALUE=0x90
August 21:
1:15 pm PDT:  D9 front fast threshold to 0x60 (was 0x90).
2:50 pm PDT:  D9 front and rear events disabled.
4:30 pm PDT:  HV drop of ~400V, performed in two steps, to 1838V.  No change to resets (30k).  RTS load to keep D9 events from being re-enabled after eclipse.  D9 fast and slow thresholds to max.
6:00 pm PDT:  HV drop to ~900V and then again to ~800V.  Rear resets before and after are 30k then 25.7k then 23.5k.  D9 front fast threshold returned to 0x90.
2015-236-20:42:45 /itmon value=AFE8 (Detector 9 events turn on)
2015-273-03:00:43 /itmon value=AFE8 (Detector 9 events on)
2015-273-03:01:09 /IHVDAC DETECTOR=9, VOLTAGE=26



D9 front slow LLD threshold history

post 2014 anneal 0x0C
2015 Apr 14 14:09:12 0x1A (was 0x0C)

D9 front fast LLD threshold history

post 2014 anneal 0x22
2015-Apr-07 19:58 0x30 (was 0x22)
2015-May-13 19:09:52 0x40 (was 0x30)
2015-Jun-11 20:18:44 0x50 (was 0x40)
2015-Jul-31 21:42:36 0x60 (was 0x50)
2015-Aug-20 22:21:46 0x90 (was 0x60)
2015-Aug-21 ~20:15 0x60 (was 0x90)
2015-Aug-22 ~01:15 0x90 (was 0x60)

D9 rear slow LLD threshold history

post 2014 anneal 0x30
2015-Aug-22 ~1:15 UTC 0xFF

D9 rear fast LLD threshold history

post 2014 anneal 0x45
2015-Jan-08 17:46:04 0x50 (was 0x45)
2015-Jan-22 23:34:34 0x58 (was 0x50)
2015-Jan-22 23:36:55 0x60 (was 0x58)
2015-Feb-27 18:45:14 0x68 (was 0x60)
2015-Feb-27 20:22:09 0x70 (was 0x68)
2015-Mar-05 19:40:12 0x80 (was 0x70)
2015-Mar-11 22:46:19 0x90 (was 0x80)
2015-Mar-13 22:06:31 0xA0 (was 0x90)
2015-Mar-16 19:24:28 0xB0 (was 0xA0)
2015-Mar-18 21:52:57 0xC0 (was 0xB0)
2015-Mar-18 23:32:15 0xD0 (was 0xC0)
2015-Mar-25 21:07:00 0xFF (was 0xD0)

D9 HV history

post 2014 anneal 3995 V
2014-Aug-20 3603V (was 3995V)
2015-Mar-25 2622V (was 3603V)
2015-Aug-03 2230V (was 2622V)
2015-Aug-21 ~2000V (was 2230V)
2015-Aug-21 ~1800V
2015-Aug-21 ~900V
2015-Aug-21 808V
2015-Sep-30 03:01:09 490V (was 808V)
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