Detector 8

'This page contains information about changes/issues for RHESSI detector 8 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: Detector 8 anneal 2012

Notes

Detector 8 is SEGMENTED after the 2014 anneal!

On March 13, 2015 the rear fast threshold was changed.

 15-072-22:05:41 /IDPUTABLE8 OFFSET=REARFASTDAC
 15-072-22:05:56 /IDPLOAD VALUE=0x55

• On April 7 2015, the rear fast threshold was changed due to extremely low livetime in the rear segment. It is not clear if this helped; the action will probably be repeated.

15-097-19:57:24 /IDPUTABLE8 OFFSET=REARFASTDAC
15-097-19:57:37 /IDPLOAD VALUE=0x70 ; was 0x65

• On April 9 2015, the rear fast threshold was changed due to low livetime in the rear segment.

15-099-17:38:09 /IDPUTABLE8 OFFSET=REARFASTDAC
15-099-17:38:23 /IDPLOAD VALUE=0x80 ; was 0x70

• On April 13 at 17:47UT we changed the Rear Fast threshold for detector 8.

15-103-17:46:36 /IDPUTABLE8 OFFSET=REARFASTDAC
15-103-17:46:47 /IDPLOAD VALUE=0x90   ; was 0x80

• On April 14 at 17:25 UT we changed the Rear Fast threshold for detector 8.

15-104-17:25:11 /IDPUTABLE8 OFFSET=REARFASTDAC
15-104-17:25:22 /IDPLOAD VALUE=0xA0 ; was 0x90

• On April 24 at 19:14 UT Rear Fast Threshold was increased.

15-114-19:14:10 /IDPUTABLE8 OFFSET=REARFASTDAC
15-114-19:14:20 /IDPLOAD VALUE=0xB0 ; was 0xA0

• On May 4 at 20:49 UT Rear Fast Threshold was increased

15-124-20:49:54 /IDPUTABLE8 OFFSET=REARFASTDAC
15-124-20:50:09 /IDPLOAD VALUE=0xC0 ; was 0xB0

D8 front slow LLD threshold history

post 2014 anneal

0x0C

D8 front fast LLD threshold history

post 2014 anneal	0x22
2015-Jun-11 20:18:18	0x30 (was 0x22)

D8 rear slow LLD threshold history

post 2014 anneal

0x30

D8 rear fast LLD threshold history

post 2014 anneal	0x45
2015-Mar-13 22:05:56	0x55 (was 0x45)
2015-Mar-25 19:30:35	0x65 (was 0x55)
2015-Apr-07 19:58	0x70 (was 0x65)
2015-Apr-09 17:38:23	0x80 (was 0x70)
2015-Apr-13 17:46:47	0x90 (was 0x80)
2015-Apr-14 17:25:22	0xA0 (was 0x90)
2015-Apr-24 19:14:20	0xB0 (was 0xA0)
2015-May-04 20:49:54	0xC0 (was 0xB0)

D8 HV history

post 2014 anneal	3995 V
2015-May-8 22:33:30	3554 V (was 3995 V)
2015-May-12 21:03:52	2573 V (was 3554 V)