[Solid_tof] solid mrpc trigger response

[Jian-Ping Chen]

Hi, Mickey,

Yes, there will be remote video conferencing (bluejeans).
It will be good if you can show (remotely) a couple of slides to
summarize the current status and plan for TOF R&D.

Thanks.

Jian-ping


On 8/21/16 6:08 PM, Mickey Chiu wrote:
> Hi JP,
>
> I’m actually in Taiwan right now, so I won’t be able to attend in person.  I think I can dial in if there is a teleconference set up.
>
> Mickey
>
>> On Aug 20, 2016, at 4:34 AM, Jian-Ping Chen <jpchen at jlab.org> wrote:
>>
>> Hi, Mickey,
>>
>> At the next SoLID collaboration meeting 8/26-8/27, I would like to have a discussion on
>> TOF improvement R&D. It will be very helpful if you can be here for the discussion.
>> Will you be able to attend?
>>
>> Thanks.
>>
>> Jian-ping
>>
>> On 8/17/16 4:29 PM, Zhiwen Zhao wrote:
>>> hi, Yi and Mickey
>>>
>>> As you may know, we plan to use MRPC as part of SoLID SIDIS trigger to reject photons
>>> To do the study, I simulated how particle deposit energies in mrpc gas layers
>>> and assumes the MRPC response is something like below
>>> ==========================================================================================
>>> 1. at least a single particle having energy deposition > 16eV for ionization in one layer of Freon gas will fire this layer
>>> 2. the mrpc fires when the number of layers fires is at least n
>>> 3. I am guessing we can start the study with n=5 for trigger threshold. We could use other value for charge particle detection.
>>> ==========================================================================================
>>> Do you have any comment or suggestion?
>>>
>>> Another thing is about mrpc segmentation
>>> Because of low energy photons could be dominant background for mrpc, the number and direction of segmentation may affect
>>> how high the occupancy by background is and how trigger performs.
>>> I see PreCDR has the design 50 supermodule and 3 modules per super module, total 150 modules
>>> I assume the supermodules is segmented along azimuthal direction and 3 modules in each supermodule is along radial direction?
>>> Is there any freedom of changing the segmentation if trigger demands?
>>> Will that impact charge particle detection?
>>>
>>> Thanks
>>>
>>> Zhiwen
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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