The decision to cut the singles down from 3 to 9 happened before
the H2 data taking. See the following elogs:
2004/03/16 21105
2004/04/06 22225,30
2004/04/07 22285
2004/09/28 29620,22,55
2004/12/03 31805
2004/12/09 31967
--Chris
_______________________________________
TA-53/MPF-1/D111 P-23 MS H803
LANL, Los Alamos, NM 87545
505-665-9804(o) 665-4121(f) 662-0639(h)
_______________________________________
On Feb 8, 2006, at 14:33:59, Michael Kohl wrote:
> 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 |
>>>> | 9 Library Way |
>>>> | Durham, NH 03824 |
>>>> | phone: (603)868-6882 |
>>>> | FAX: (603)862-2998 |
>>>> | email: ofiloti@unh.edu |
>>>> --------------------------
>>> +-------------------------------------+--------------------------+
>>> | 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 | |
>>> +-------------------------------------+--------------------------+
>>
>
>
> +-------------------------------------+--------------------------+
> | 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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