Detector 7

This page contains information about changes/issues for RHESSI detector 7 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: Detector 7 anneal 2012

Notes

After the 2014 anneal, detector 7 was unsegmented. As of 11-27-2014 it has SEGMENTED

• A tweak shortly after the anneal was completed:

 G7 front slow to 0x80 (was 0x70) after 03:40 on 2014-Aug-14.

• 11-27-2014. G7 rear slow rates rose and the detector segmented

• Front Fast and Front Slow thresholds were changed on January 7, 2015 at 14:20 UTC to default values. Front slow is showing very high values on the monitor rates (~900).

 G7 front slow to 0x0C (was 0x10) after 14:21 on 2015-Jan-07.
 G7 front fast to 0x22 (was 0x2E) after 14:22 on 2015-Jan-07.

• On Jan 13 2015, we reverted the front slow thresh back to its previous value, because it was suspected that low-energy D7 events were filling up the SSR.

 15-013-19:27:21 /IDPUTABLE7 OFFSET=FRONTSLOWDAC
 15-013-19:27:36 /IDPULOAD VALUE=0x10 ; increased from 0x0C
 15-013-19:28:17 start idpu_dec_active_vigorous

D7 front slow LLD threshold history

post 2014 anneal	0x70
2014-Aug-14 after 03:40 UTC	0x80 (was 0x70)
2014-Dec-4 after 01:09 UTC	0x10 (was 0x80)
2015-Jan-07 after 14:09 UTC	0x0C (was 0x10)
2015-Jan-14 19:27:36 UTC	0x10 (was 0x0C)

D7 front fast LLD threshold history

post 2014 anneal	0x2E
2015-Jan-07 after 14:09 UTC	0x22 (was 0x2E)
2015-May-12 21:01:53	0x30 (was 0x22)
2015-May-12 21:03:20	0x40 (was 0x30)

D7 rear slow LLD threshold history

post 2014 anneal

0x30

D7 rear fast LLD threshold history

post 2014 anneal

0x45

D7 HV history

post 2014 anneal

4510 V