[Solid_tof] SoLID TOF requirement

Zhiwen Zhao zwzhao at jlab.org
Sat Apr 23 11:02:32 EDT 2016

HI, Mickey

That's a big "if"
For example, maybe the MRPC only fires when at least 5 gas layers has 
energy deposition larger than Freon ionization?
That could further reduce the rate?
I hope TOF group can give guidance on the simulation about the low 
energy photon response and how it fires MRPC.


On 4/23/2016 9:55 AM, Mickey Chiu wrote:
> Hi Zhiwen,
> If your calculations are correct, that is a pretty high rate for mRPCs to be able to handle, so I think MCP-PMT’s should be the better option here.
> Mickey
>> On Apr 22, 2016, at 4:16 PM, Zhiwen Zhao <zwzhao at jlab.org> wrote:
>> Dear Junqi and Mickey
>> It's great that you will come to Jlab for the upcoming SoLID meeting!
>> Some info here can be useful when you are thinking about fast TOF(MRPC, LAPPD, MACP-PMT .. ) for SoLID
>> MRPC section in SoLID pCDR
>> http://hallaweb.jlab.org/12GeV/SoLID/download/doc/solid_precdr.pdf
>> last few slides of Yi Qiang's talk
>> http://hallaweb.jlab.org/12GeV/SoLID/meeting_coll/2013_11/20131109_DIRC_SoLID.pdf
>> my slide
>> http://hallaweb.jlab.org/12GeV/SoLID/download/sim/talk/background_mrpc_zwzhao_20151208.pdf
>> I think the main question is that if TOF can have good resolution at the SoLID high rate environment.
>> See my slide 3 showing rate of particles entering TOF
>> My other slides showing MPRC rate is based on assumption how MRPC response to the particles coming.
>> We would need help from TOF group on simulations and experiment test to really know this.
>> We can use solid_tof at jlab.org for discussion and I have added you two into the list.
>> Thanks and see you at jlab!
>> Zhiwen

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