Detector 1

This page contains information about changes/issues for RHESSI detector 1 after the 2014 anneal. Detector 1 updates from 2012-mid 2014 can be found here: Detector 1 anneal 2012

Notes

Detector 1 is SEGMENTED following the 2014 anneal (yay!)

• The rear fast threshold was changed on July 13 2015 due to dropping livetime in the rear:

2015-194-16:33:58 /IDPUTABLE1 OFFSET=REARFASTDAC
2015-194-16:34:12 /IDPLOAD VALUE=0x50 ; was 0x45

• The rear fast threshold was changed on July 24 2015 due to low livetime. However, the change probably wasn't needed; the tohban hadn't noticed that a change had already been made a few days ago. The next tohban can reverse the change if desired.

2015-205-17:18:59 /IDPUTABLE1 OFFSET=REARFASTDAC
2015-205-17:19:08 /IDPLOAD VALUE=0x70 ; was 0x60

• The rear fast threshold was changed on Sep 9 2015 due to low livetime.

 2015-252-17:51:10 /IDPUTABLE1 OFFSET=REARFASTDAC
 2015-252-17:51:17 /IDPLOAD VALUE=0x80 ; was 0x70

D1 front slow LLD threshold history

post 2014 anneal

0x0C

D1 front fast LLD threshold history

post 2014 anneal	0x22
2015-May-12 21:01:12	0x30 (was 0x22)
2015-May-12 21:10:35	0x40 (was 0x30)

D1 rear slow LLD threshold history

post 2014 anneal

0x30

D1 rear fast LLD threshold history

post 2014 anneal	0x45
2015-Jul-13 16:34:12	0x50 (was 0x45)
2015-Jul-24 17:19:08	0x70 (was 0x60)
2015-Sep-9 17:51:17	0x80 (was 0x70)

D1 HV history

post 2014 anneal

3995 V