Hi Tavi,
from looking at
/home/daq/blast/pro2004/coda/crl/ts2_pro2004_pri_ps7.crl
I conclude that ps7 was 9 during the hydrogen running (not 3).
Also, trigger type 2 was scaled by 2 for runs 13008-13266.
Tigger 3 (two charged tracks with Cerenkov in one sector and no charged
track in the other) was scaled by 10 all the time. Can you evaluate what
fraction of events fell into this category? Since it is expected to be
mostly pion production events they may matter for the inclusive yield.
Regards,
Michael
On Sun, 5 Feb 2006, Karen Dow wrote:
> Tavi,
>
> Michael is right, the best thing to do is check through elog. We did change
> trigger 2 prescale during/for the hydrogen. You can also look in
> /home/blast/pro2004/coda/crl at the various ts2*.crl files. Each has a
> relevant date in the name, and that's where the prescale factors are
> determined.
>
> Karen
>
> Michael Kohl wrote:
>
>> Hi Tavi,
>>
>> I remember that trigger 2 was prescaled towards the end the 2004 H2 run.
>> You may want to look throug the elog messages.
>>
>> Please check with Karen. She also knows more exactly about the logics of
>> the trigger types.
>> You are right that in principle all trigger types should be added. However
>> in real life, only 1,2, and 7 contribute significantly.
>>
>> Karen, could you comment on Tavi's questions?
>>
>> Regards,
>>
>> Michael
>>
>>
>>
>>
>> On Fri, 3 Feb 2006, Octavian F Filoti wrote:
>>
>>>
>>> One more! :-)
>>> Can you tell me the correct prescale factor for ABS H2 Fall 2004, for
>>> trigger 1, 2, 3, and 7!
>>> Thanks
>>>
>>> P.S. Trigger 3 is p(e,e'pi), why shouldn't I add it also?!
>>>
>>>
>>> --
>>>
>>> --------------------------
>>> | Octavian F Filoti |
>>> | Nuclear Physics Group |
>>> | Univ. of New Hampshire |
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>>> | Durham, NH 03824 |
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>>> --------------------------
>>>
>>
>>
>> +-------------------------------------+--------------------------+
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>> +-------------------------------------+--------------------------+
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
+-------------------------------------+--------------------------+
| Office: | Home: |
|-------------------------------------|--------------------------|
| Dr. Michael Kohl | Michael Kohl |
| Laboratory for Nuclear Science | 5 Ibbetson Street |
| MIT-Bates Linear Accelerator Center | Somerville, MA 02143 |
| Middleton, MA 01949 | U.S.A. |
| U.S.A. | |
| - - - - - - - - - - - - | - - - - - - - - -|
| Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de |
| Work: +1-617-253-9207 | Home: +1-617-629-3147 |
| Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 |
| http://blast.lns.mit.edu | |
+-------------------------------------+--------------------------+
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