Detector 6
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15-008-17:44:55 /IDPUTABLE6 OFFSET=REARFASTDAC | 15-008-17:44:55 /IDPUTABLE6 OFFSET=REARFASTDAC | ||
15-008-17:45:18 /IDPULOAD VALUE=0x50 ;(was 0x45) | 15-008-17:45:18 /IDPULOAD VALUE=0x50 ;(was 0x45) | ||
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| + | * * D6 has been showing some strange peaks in the spectrum; these are best seen as multiple lines (that drift) in spectrograms. On Monday, Jan 28 we raised the slow front threshold on D6 to ~10 keV and kept it there for a day before returning to the nominal ~3 keV. This is intended to see if the slow threshold affects the abnormal spectral lines. | ||
| + | 21:57:13 UTC / D6 front slow threshold to 0x30 (was 0x0C). | ||
| + | |||
| + | * D6 fast rates are a bit high (have been rising slowly over the past week). It would be a good idea to raise the front fast threshold a touch. I didn't want to do this at the same time as the slow threshold experiment! | ||
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| post 2014 anneal || 0x0C (after segmentation) | | post 2014 anneal || 0x0C (after segmentation) | ||
| + | |- | ||
| + | | 21:57:13 UTC || 0x30 (was 0x0C) | ||
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Revision as of 20:36, 27 January 2015
This page contains information about changes/issues for RHESSI detector 6 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: Detector 6 anneal 2012
Contents |
Notes
After the 2014 anneal, detector 6 began its reincarnated life as an unsegmented detector but segmented shortly after (see below).
- On 2014 August 14, the HV on D6 was raised to 4926V in an attempt to segment it. This was successful, and D6 now operates as a segmented detector. Since its segmentation is borderline as of Aug/Sept 2014, it commonly unsegments during and just after the SAA.
- On 2014 Jan 8, the rear fast threshold was raised since fast counts were eating up a lot of livetime.
15-008-17:44:55 /IDPUTABLE6 OFFSET=REARFASTDAC 15-008-17:45:18 /IDPULOAD VALUE=0x50 ;(was 0x45)
- * D6 has been showing some strange peaks in the spectrum; these are best seen as multiple lines (that drift) in spectrograms. On Monday, Jan 28 we raised the slow front threshold on D6 to ~10 keV and kept it there for a day before returning to the nominal ~3 keV. This is intended to see if the slow threshold affects the abnormal spectral lines.
21:57:13 UTC / D6 front slow threshold to 0x30 (was 0x0C).
- D6 fast rates are a bit high (have been rising slowly over the past week). It would be a good idea to raise the front fast threshold a touch. I didn't want to do this at the same time as the slow threshold experiment!
D6 front slow LLD threshold history
| post 2014 anneal | 0x0C (after segmentation) |
| 21:57:13 UTC | 0x30 (was 0x0C) |
D6 front fast LLD threshold history
| post 2014 anneal | 0x22 (after segmentation) |
D6 rear slow LLD threshold history
| post 2014 anneal | 0x30 (after segmentation) |
D6 rear fast LLD threshold history
| post 2014 anneal | 0x45 (after segmentation) |
| 2014-Jan-08 17:45:18 | 0x50 (was 0x45) |
D6 HV history
| post 2014 anneal | 4510 V (unsegmented) |
| 2014-Aug-14 03:40 UTC | 4926 V (was 4510 V) (segmented) |
