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Dear g12,<br>
I am looking at the trigger efficiency of trigger bit #5 (STxTOF x
(ECPx2)). <br>
<br>
Before doing so, I wanted to do some checks on the way trigger bits
were reported in the output banks. <br>
I have taken from tape a single file from run 56541 (file A00), and
I opened it via bosdump, printing HEAD, TGBI and RC26 banks.<br>
<br>
According to g12 note (table 2 pag. 5), for this run trigger bits
1..6 are MORA x (STxTOF)_i x (STxTOF), without any prescale and
without L2.<br>
Trigger bit 8 is MORA x (STxTOF)x2.<br>
<br>
Therefore, for any event with one of trigger bits 1..6 set, trigger
bit 8 should also be present (for example, if trigger bit 1 is set,
it means that MORA is TRUE, and that there are two sectors with
STxTOF, one of which is sector #1: trigger bit 8 is also satisfied
for this event).<br>
<br>
However, this is not the case for the events I am scrutinizing. I
report to you some events showing this issue. I also CC this to
Sergey and Ben, so that they can provide further input to the
discussion.<br>
<br>
<br>
<b>EVENT:</b><br>
Version: 0<br>
Run: 56541<br>
Event: 858<br>
Type: 1 (physics data)<br>
ROC: 0<br>
CLASS: 14<br>
Trgbit: 0x5405 --> bit 1, bit 3, bit 11, bit 13,
bit 15. By the way, what are trigger bit 13 and 15? They are not
reported in table 2.<br>
TIME: Thu May 21 18:02:01 2144<br>
<br>
<b>EVENT:</b><br>
Version: 0<br>
Run: 56541<br>
Event: 853<br>
Type: 1 (physics data)<br>
ROC: 0<br>
CLASS: 14<br>
Trgbit: 0x8c20 --> bit 6, bit 11, bit 12, bit 16. By
the way, what is trigger bit 16? This is not reported in table 2.<br>
TIME: Thu May 21 18:02:01 2144<br>
<br>
<b>EVENT:<br>
</b>Version: 0<br>
Run: 56541<br>
Event: 947<br>
Type: 1 (physics data)<br>
ROC: 0<br>
CLASS: 14<br>
Trgbit: 0x5c15 --> bit 1, bit 3, bit 5, bit 11, bit 12,
bit 13, bit 15. By the way, what is trigger bit 15? This is not
reported in table 2.<br>
TIME: Thu May 21 18:02:01 2144<b><br>
<br>
<br>
</b>Thanks,<br>
Andrea<br>
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