List of problem channels

This list does not include obvious temporary failures like dead ADBs, CAREs, etc.

Channel (Cr-Sl-Ch) theta/phi Ecal Spectra comment source Bhabha lightpulser
0 - 5 - 9 31/14 high noise on entire ADB Good - Good Good Bad(out of time)
0 - 10 - 10 30/29 gain low on all ranges, RMS B low,ranges end early Good - Bad(few counts) Bad Bad(out of time)
0 - 10 - 46 18/29 times1/times 4 bad, no ecal, RMS x4 high gap at 500 MeV, otherwise ok - Good Good -
1 - 1 - 36 20/30 Good Good - Good Good -
1 - 4 - 52 16/40 noisy noisy - Bad(noisy) Good -
1 - 5 - 48-51/60-63 9-16/42 Good Good Bad trigger summer on UPC Bad(few counts) Good -
2 - 1 - 62 10/60 Good Good - Good Bad -
2 - 2 - 20 11/68 Good Good - Bad(bad chisq/spectrum) Good -
2 - 5 - 34 22/74 Good Good - Good Bad -
2 - 6 - 24 24/75 high RMS (8.5), x4 looks strange Good - Good Bad -
2 - 6 - 26 22/75 Good Good - Good Bad -
2 - 6 - 27 21/75 Good Good - Good Bad -
2 - 7 - 33 23/80 noisy Good - Bad(noisy) Good -
2 - 8 - 0 32/81 noisy noisy - Bad(noisy) Good -
2 - 9 - 0-11 29-32/84-86 noisy all channels on the ADB noisy, source cal bad only for 2-9-0 Bad (see comment) Good -
2 - 10 - 0 32/87 Bad Bad only B broken? Bad(chi-sq,noisy) Bad Bad
3 - 3 - 53 15/97 Good Good - Good Bad -
3 - 5 - 25 23/102 Good Good - Good Good -
3 - 10 - 6 30/118 Good Good - Bad(chisq,spectrum) Good -
3 - 10 - 9 31/119 Good Good - Bad(chisq,spectrum) Good -
4 - 10 - 9 34/0 low gain on all ranges (factor 1.4) Good - Good Good -
4 - 10 - 17 38/1 low gain on all ranges (factor 1.4) Good - Good Good -
5 - 3 - 71 56/51 Good Good - Good Good Bad(out of time)
5 - 3 - 20 37/51 Good Good - Good Good Bad(out of time)
5 - 4 - 51 52/50 Good Good - Good Good Bad(out of time)
5 - 4 - 64 53/49 Good Good - Good Good Bad(out of time)
5 - 4 - 66 55/49 Good Good - Good Good Bad(out of time)
5 - 6 - 70 55/42 gains low, ped B RMS low, ranges saturate early Bad(noisy below 100 MeV, no data above 1 GeV) - Good Good Bad(out of time)
5 - 7 - 70 55/39 Good Good - Good Good Bad(out of time)
5 - 7 - 71 56/39 Good Good - Good Good Bad(out of time)
5 - 9 - 26 43/35 Good Good - Good Good Bad(out of time)
6 - 1 - 6 35/88 Good Good - Good Good Bad(out of time)
6 - 1 - 67 56/88 Good Good - Good Good Bad(out of time)
6 - 3 - 25 42/83 Good noisy - Good Good -
6 - 5 - 57 50/75 Good spike at 40 MeV, spectrum goes up too far - Bad(chi-sq, noisy) Good Bad(out of time)
6 - 8 - 49 50/68 Good Good - Good Good Bad(out of time)
7 - 1 - 30 43/118 gain low, channel B low RMS Bad in the lightpulser, both A and B are low Good(few counts) Bad Bad(out of time)
7 - 5 - 1 34/107 all gains low Bad(really bad above 100 MeV) - Good Good Bad
7 - 5 - 60 53/107 Good Good - Good Good Bad(out of time)
7 - 5 - 63 56/107 Good Good - Good Good Bad(out of time)
7 - 5 - 66 55/106 Good Good - Good Good Bad(out of time)
7 - 6 - 41 46/103 low gain all ranges, low RMS ped A Good - Good Bad -
7 - 6 - 47 48/12 Good Good - Good Bad -
7 - 7 - 39 48/101 Good Good - Good Bad -
7 - 8 - 38 47/98 Good Good - Good Bad -
7 - 8 - 39 48/98 Good Good - Good Bad -
9 - 2 - 8 6/41 Good Good - Good Bad -
9 - 2 - 11 5/34 Good Good - Good Bad -
9 - 3 - 9 5/37 Good Good - Good Bad -
9 - 4 - 27 7/48 very low gain gaps in the spectrum, but sort of ok - Bad(no data) Good -
9 - 4 - 39 (32/41/43/45) 3/40 low gain spectrum ends early several similar channels, only 3/40 fails sourcecal Bad(no data) Good -
9 - 4 - 44 1/32 entire ADB is bad, only this channel fails in Bhabhas Good Bad -
9 - 8 - 32 6/74 low RMS on A Good Only diode A bad? Bad(low gain) Bad Bad

Page author: Martin Kocian
Last significant update: May-17-2001