[Clas_cascades] T-counter observable

[Kijun Park]

Haiyun Lu wrote:
> Hi Kijun,
> The time is tpho in tagr bank. The time difference is the the 
> difference between the vertex time at target center corresponding to 
> the TOF time of the fastest negative particle and tpho.
> There is a field called T_id in tagr bank. For T Counter n, 2n-1 is 
> the non-overlap and 2n is the overlap region. For example, t_id 17 is 
> the non-overlap region of TCounter 9 and t_id 18 is the overlap region 
> of TCounter 9.
> Kijun Park wrote:
>> Hi, Haiyun.
>> Could let me know what did you plot for T-counter.  In the plots, it 
>> says Time vs. Time difference between TOF and All photons in T 
>> Counter. Could you tell how you define ? I would like to plot same 
>> like yours.
>> And how you distinguish between overlap and non-overlap region ?  
>> Just by eye on E-counter plot ?
>> Thanks
>> Kijun
>>
>
Hi,
I tried to look at the time difference in terms of individual Tid using 
G11 data. I checked out plots whether I could see similar problem that 
Haiyun observed in EG3. The plot is attached, and I don't see double 
peaks any Tid.  The time difference = photon time - vertex time.

Sincerely yours,
Kijun


-- 
---------------------------------------******
Kijun Park
Jefferson Lab.
Suit 5 Room 12_1/B107
12000 Jefferson Av.
Newport News VA 23606
Phone 757-269-6989

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