[Olympus] Acceptance Simulations

[Norair Akopov]

Dear Stan,

I would not spend a time for quite unrealistic simulation, as you know
the old measurements with the cosmic as well the lates done with the SiPM 
sandwiches with the beam have given ~99% efficiency. It means the 
relaistic level of time dependence for the TOF efficiencies could be on 
the level of max. 1-2% (even less), but not 20%? If you want to simulate 
the extremely worse situation , then the forward and backward bars has to 
differ on 1-2% efficiency.

Regards,
Norik
    On Thu, 15 Nov 2012, Belostotski, Stanislav wrote:

> Hi Axel, I suggest a simple test: assume that one  forward and one
> backward  TOF bar has lost its efficiency by some 20%. How the ratio at
> corresponding scattering angles would look like.
> Regards StanB
>
> On 14.11.2012 20:36, Axel Schmidt wrote:
>> Hi,
>>
>> I've analyzed another chunk of data, enough to double the statistics.  I'm attaching an updated version of my last plot.  There are definitely features that appear with the 1-degree binning.
>>
>> I agree, a generator that is uniform in lepton scattering angle is needed to study this further.  I'm working on producing that data now.  The advantage of the realistic generator is that I had that data lying around already; it was quicker to analyze.
>>
>> Cheers,
>> Axel
>>
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>>
>> On Nov 14, 2012, at 12:07 PM, Michael Kohl wrote:
>>
>>> Hi Axel,
>>> this looks good. On first sight, the acceptance changes are small.
>>> One needs much more statistics at backward angle. Maybe use a white generator with weights rather that cross-section distributed events.
>>>
>>> For the comparison of gap vs no gap, one would need to look at ratios of ratios.
>>>
>>> Thanks and best regards
>>>   Michael
>>>
>>>
>>>
>>> On Wed, 14 Nov 2012, Axel Schmidt wrote:
>>>
>>>> Hi Michael,
>>>> 	Here are plots showing the effect of introducing gaps between the tof bars (B+ mode only).  I show two different binning schemes side by side.
>>>> Cheers,
>>>> Axel
>>>>
>>>>
>>>
>>> +---------------------------------------------------------------------
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>>
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