RHESSI GeD HV Record

The high voltages on the RHESSI germanium detectors are controlled by an 8-bit DAC, with each DAC step representing approximately 19.4V. The effect of high voltage on detector performance will be discussed in detail elsewhere, but an important number is the segmentation (depletion) voltage for each detector: above this value the detector can function properly with its front and rear segments both active. The DAC values for the segmentation voltages for the 9 detectors are the values in the second row of the table below (188, 162,......).

The table shows the status of all 9 HV DACs just after each change made. Each line represents actions taken during a single satellite contact with the Berkeley Ground Station. When the HV was moved in several steps during a single pass, that is indicated by a footnote showing all the HV values that were commanded during that pass. Detectors are referred to by grid number (G1-G9). Times are approximate times for the pass, so the moment the HV was commanded can be anywhere within about 10 minutes of the time shown. More precise times are available if needed -- see the contact information below.

YEARMONTHDAYHOURMINUTEG1G2G3G4G5G6G7G8G9
2002 02 11 23 25 80 80 80 80 80 80 80 80 80
2002 02 12 01 05 188 162 104 162 167 167 135 182 130
2002 02 12 23 35 206 206 190 206 190 206 206 206 206
2002 02 13 01 15 206 162 190 206 190 206 206 206 206
2002 02 13 02 50 188 162 104 162 167 167 135 182 130
2002 02 14 23 40 188 0 104 162 167 167 135 182 130
2002 02 15 18 50 188 10 104 162 167 167 135 182 130 a
2002 02 15 20 25 188 100 104 162 167 167 135 182 130 b
2002 02 15 22 05 206 130 136 194 190 199 167 206 162 c
2002 02 15 22 05 206 162 136 194 190 199 167 206 162 d
2002 02 16 20 35 0 162 136 194 190 199 167 206 162
2002 02 16 22 20 206 162 190 206 190 206 206 206 206
2002 02 17 00 00 206 178 190 206 190 206 206 206 206
2002 02 17 19 05 188 178 190 206 190 206 206 206 206
2002 02 20 22 50 188 178 190 162 190 206 206 206 206
2002 02 22 18 00 206 194 190 184 190 206 206 206 206
2002 02 23 21 30 206 206 190 206 190 206 206 206 206
2002 02 24 18 20 206 0 190 206 190 206 206 206 206 e
2002 02 24 20 00 206 0 190 206 190 206 206 206 206 f
2002 02 24 21 40 206 130 190 206 190 206 206 206 206 g
2002 02 24 23 24 206 0 190 206 190 206 206 206 206
2002 02 25 16 40 206 0 190 206 190 206 206 206 206 h
2002 02 26 18 30 206 130 190 206 190 206 206 206 206 i
2002 02 26 21 55 206 130 190 206 190 206 206 206 206 j
2002 02 27 18 45 206 130 190 206 190 206 206 206 206 k
2002 02 28 17 10 206 130 190 206 190 206 206 206 206 l
2002 03 04 17 40 206 133 190 206 190 206 206 206 206
2002 03 04 19 20 206 130 190 206 190 206 206 206 206
2002 03 13 06 45 206 125 190 206 190 206 206 206 206
2002 03 15 10 30 206 120 190 206 190 206 206 206 206
2002 03 19 06 00 206 110 190 206 190 206 206 206 206
2002 03 19 07 40 206 100 190 206 190 206 206 206 206
2002 03 19 09 20 206 90 190 206 190 206 206 206 206
2002 03 19 11 00 206 80 190 206 190 206 206 206 206
2002 03 19 12 40 206 120 190 206 190 206 206 206 206
2002 04 10 00 00 206 120 190 206 190 206 206 206 206 m
2002 07 18 00 42 206 100 190 206 190 206 206 206 206
2002 08 15 10 25 0 0 0 0 0 0 0 0 0
2002 08 16 10 20 80 80 80 80 80 80 80 80 80
2002 08 16 10 30 188 70 104 162 167 167 135 182 130
2002 07 18 00 42 206 70 190 206 150 206 206 206 206 n
2002 08 19 15 45 206 75 190 206 150 206 206 206 206
2002 09 07 22 55 206 80 190 206 160 206 206 206 206
2003 08 04 22 56 206 80 190 206 160 206 206 206 206 o
2003 08 05 21 16 206 85 190 206 160 206 206 206 206
2003 08 07 18 00 206 75 190 206 160 206 206 206 206 p
2003 08 07 19 40 206 80 190 206 160 206 206 206 206
2003 09 22 19 35 206 88 190 206 160 206 206 206 206
2003 09 22 21 16 206 87 190 206 160 206 206 206 206
2003 09 22 22 58 206 80 190 206 160 206 206 206 206
2003 11 10 22 42 206 80 190 206 154 206 206 206 206
2003 12 06 18 05 206 72 190 206 146 206 206 206 206
2003 12 24 01 24 206 68 190 206 142 206 206 206 206
2004 01 24 17 20 206 62 190 206 134 206 206 206 206
2004 02 06 04 10 190 62 160 190 120 190 190 190 170
2004 02 10 02 30 190 58 140 190 110 190 190 190 150
2004 02 12 09 03 190 58 140 190 100 190 190 190 150
2004 03 26 04 55 190 54 140 190 100 190 190 190 150
2004 04 28 18 41 190 58 140 190 100 190 190 190 150
2004 06 06 06 59 190 61 140 190 100 190 190 190 150
2004 06 09 00 16 190 60 140 190 100 190 190 190 150
2004 06 09 22 33 190 48 140 190 100 190 190 190 150
2004 06 11 03 36 190 58 140 190 100 190 190 190 150
2004 07 07 15 47 190 56 140 190 100 190 190 190 150
2004 08 09 21 11 190 54 140 190 100 190 190 190 150
2004 08 24 17 46 190 52 140 190 100 190 190 190 150
2004 10 27 02 55 190 52 140 190 92 190 190 190 150
2004 12 29 21 37 190 52 140 190 88 186 190 190 150
2005 01 25 21 09 190 42 140 190 88 186 190 190 150
2005 02 04 05 58 190 42 140 190 84 182 190 190 150
2005 02 08 05 48 190 42 140 190 80 178 190 190 150
2005 03 01 21 00 190 38 140 190 80 178 190 190 150
2005 04 12 00 12 190 36 140 190 76 172 190 190 150
2005 05 02 20 24 190 36 140 190 74 172 190 190 150
2005 05 09 16 55 190 34 140 190 64 162 190 190 150
a G2 0-5-10

b G2 10-20-40-60-80-100

c G2 100-120-130

d G2 130-140-150-162

e G2 206-178-162-0

f G2 0-10-100-130-150-0

g G2 0-130-150-130

h G2 0-130-150-130-0

i G2 0-130-150-130

j G2 130-135-140-135-130

k G2 130-150-130

l G2 130-135-136-137-134-130-133-130

m G2 120-130-135-136-137-120

n G5 167-190-170-150

o G2 80-85-90-95-90-80

p G2 85-80-75

This page is maintained by David Smith, who can be reached at dsmith (at) ssl.berkeley.edu