Detector 5

This page contains information about changes/issues for RHESSI detector 5 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: Detector 5 anneal 2012

Notes

• After the 2014 anneal, detector 5 is UNSEGMENTED.

• A tweak shortly after the anneal was completed:

 G5 front slow to 0x80 (was 0x70)  on 2014 Aug. 14 after 03:40 UTC

• In late December 2014 some weak signal of segmentation were seen on G5. On January 5, 2015 at 14:57 UTC we set new values for the front fast and front slow thresholds on this detector. We need to keep an eye on its behaviour. Detector 5 is now weakly SEGMENTED.

 G5 front slow to 0x0C (was 0x80)  on 2015 Jan. 5 after 14:57 UTC
 G5 front fast to 0x2E (was 0x60)  on 2015 Jan. 5 after 14:57 UTC

• On 2014 Jan 8, the rear fast threshold was raised since fast counts were eating up a lot of livetime.

 15-008-17:44:15 /IDPULOAD VALUE=0x50           ;(was 0x45)

• On 2015 May 26 starting at 19:15:09 we increased the rear fast threshold by 0x08

2015-146-19:15:09 /IDPUTABLE5 OFFSET=REARFASTDAC
2015-146-19:15:21 /IDPLOAD VALUE=0x58 ; was 0x50

• Aug. 24, 2015: The rear fast threshold was raised, successfully bringing the livetime up to >75%.

2015-236-20:46:37 /IDPUTABLE5 OFFSET=REARFASTDAC
2015-236-20:46:59 /IDPLOAD VALUE=0x70 ; was 0x58

D5 front slow LLD threshold history

post 2014 anneal	0x70
2014-Aug-14 after 03:40 UTC	0x80 (was 0x70)
2015-Jan-5 after 14:57 UTC	0x0C (was 0x80)

D5 front fast LLD threshold history

post 2014 anneal	0x30
2014-Dec-8 after 20:28 UTC	0x60 (was 0x30)
2015-Jan-5 after 14:57 UTC	0x2E (was 0x60)

D5 rear slow LLD threshold history

post 2014 anneal

0x30

D5 rear fast LLD threshold history

post 2014 anneal	0x45
2014-Jan-08 17:44:15	0x50 (was 0x45)
2015-May-26 19:15:09	0x58 (was 0x50)
2015-Aug-26 20:46:59	0x70 (was 0x58)

D5 HV history

post 2014 anneal

4510 V