[Olympus] Acceptance Simulations
Belostotski, Stanislav
stanislav.belostotski at desy.de
Thu Nov 15 03:58:38 EST 2012
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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