[G12] Beam Intensity vs MOR rate - G12_wiki

[Eugene Pasyuk]

We also have individual EPICS scalers for every tagger PMT.
They are better monitor than MOR.

-Eugene


On 02/08/11 09:33, John Price wrote:
> Sounds like we need the output of gflux as a function of beam current...
>
> On Tue, 2011-02-08 at 06:29 -0800, Eugene Pasyuk wrote:
>> MOR rate is not reliable intensity monitor. It is logical OR, it is NOT
>> arithmetic sum of all counters.
>> It saturates and eventually goes down when you increase flux.
>>
>> -Eugene
>>
>>
>> On 02/08/11 09:24, Paul Eugenio wrote:
>>> Hi,
>>>
>>> I dug out the data from the beam intensity study which was done during the run.    Performing a linear fit to the first few points shows that at 60 nA the MOR rate sags by about 8%.
>>>
>>> http://clasweb.jlab.org/rungroups/g12/wiki/index.php/Beam_Intensity_vs_MOR_rate
>>>
>>> --
>>> Prof. Paul Eugenio
>>> Florida State University
>>> Department of Physics
>>> Tallahassee, Florida,  USA 32306
>>>
>>> (850) 644-2585
>>> eugenio at fsu.edu
>>>
>>>
>>>
>>>
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