Detector 4

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* On Aug 20, 2015 the front fast threshold was raised, in two commands of 16 steps each, in order to lower fast rates and free up livetime.  This was successful but probably needs to be repeated.  Livetime rose from ~0% to ~50%. The D4 threshold should be raised again to further raise the livetime.
* On Aug 20, 2015 the front fast threshold was raised, in two commands of 16 steps each, in order to lower fast rates and free up livetime.  This was successful but probably needs to be repeated.  Livetime rose from ~0% to ~50%. The D4 threshold should be raised again to further raise the livetime.
-
 
-
15-232-22:16:08 start idib_chg_thrshld (3, FRONT, FAST, 0x50)
 
-
15-232-22:16:30 /IDPUDUMPTABL TABLE=DIBTBL3
 
-
15-232-22:16:30 /IDPUTABLE3 OFFSET=FRONTFASTDAC
 
-
15-232-22:16:41 /IDPLOAD VALUE=0x50
 
  15-232-22:17:53 start idib_chg_thrshld (4, FRONT, FAST, 0xA0)
  15-232-22:17:53 start idib_chg_thrshld (4, FRONT, FAST, 0xA0)
Line 41: Line 36:
  15-232-22:18:12 /IDPUTABLE4 OFFSET=FRONTFASTDAC
  15-232-22:18:12 /IDPUTABLE4 OFFSET=FRONTFASTDAC
  15-232-22:18:25 /IDPLOAD VALUE=0xA0
  15-232-22:18:25 /IDPLOAD VALUE=0xA0
 +
 +
15-232-22:19:13 start idib_chg_thrshld (4, FRONT, FAST, 0xB0)
 +
15-232-22:19:23 /IDPUDUMPTABL TABLE=DIBTBL4
 +
15-232-22:19:23 /IDPUTABLE4 OFFSET=FRONTFASTDAC
 +
15-232-22:19:32 /IDPLOAD VALUE=0xB0

Revision as of 21:35, 22 August 2015

This page contains information about changes/issues for RHESSI detector 4 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: Detector 4 anneal 2012

Contents

Notes

After the 2014 anneal, detector 4 is UNSEGMENTED.

15-141-19:24:10 start idib_chg_thrshld (4, FRONT, SLOW, 0x68)  --> Was 0x60
15-141-19:24:22 /IDPUDUMPTABL TABLE=DIBTBL4
15-141-19:24:22 /IDPUTABLE4 OFFSET=FRONTSLOWDAC
15-141-19:24:31 /IDPLOAD VALUE=0x68
2015-152-17:00:18 /IDPUTABLE4 OFFSET=FRONTFASTDAC
2015-152-17:00:31 /IDPLOAD VALUE=0x60  ; was 0x50
2015-188-18:48:17 /IDPUTABLE4 OFFSET=FRONTFASTDAC
2015-188-18:48:34 /IDPLOAD VALUE=0x70  ; was 0x60
2015-191-19:21:17 /IDPUTABLE4 OFFSET=FRONTFASTDAC
2015-191-19:21:25 /IDPLOAD VALUE=0x80  ; was 0x70
2015-205-17:22:21 /IDPUTABLE4 OFFSET=FRONTFASTDAC
2015-205-17:22:30 /IDPLOAD VALUE=0x90  ; was 0x80
15-232-22:17:53 start idib_chg_thrshld (4, FRONT, FAST, 0xA0)
15-232-22:18:12 /IDPUDUMPTABL TABLE=DIBTBL4
15-232-22:18:12 /IDPUTABLE4 OFFSET=FRONTFASTDAC
15-232-22:18:25 /IDPLOAD VALUE=0xA0
15-232-22:19:13 start idib_chg_thrshld (4, FRONT, FAST, 0xB0)
15-232-22:19:23 /IDPUDUMPTABL TABLE=DIBTBL4
15-232-22:19:23 /IDPUTABLE4 OFFSET=FRONTFASTDAC
15-232-22:19:32 /IDPLOAD VALUE=0xB0


D4 front slow LLD threshold history

post 2014 anneal 0x50
2015 May 21 19:24 UTC 0x70 (was 0x60)

D4 front fast LLD threshold history

post 2014 anneal 0x30
2014-Dec-8 after 22:05 UTC 0x50 (was 0x30)
2015-Jun-02 17:00:31 UTC 0x60 (was 0x50)
2015-Jul-07 18:48:34 UTC 0x70 (was 0x60)
2015-Jul-07 19:21:25 UTC 0x80 (was 0x70)
2015-Jul-24 17:22:30 UTC 0x90 (was 0x80)
2015-Aug-20 22:18:25 UTC 0xA0 (was 90)
2015-Aug-20 22:19:32 UTC 0xB0 (was A0)

D4 rear slow LLD threshold history

post 2014 anneal 0x30

D4 rear fast LLD threshold history

post 2014 anneal 0x45

D4 HV history

post 2014 anneal 4510 V
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