[Clas12_rgh] [EXTERNAL] RGH meeting February 17

[Marco Contalbrigo]

Hi Nilanga,
thank you for this interesting study. You are welcome to
present it next time. Meanwhile, let me ask you some
clarification:

------------------
Slide 2:
------------------

- What do you mean by "pixel": Is it a SiPM ?

- You ask at least 10 photons, and take the time of
the first, is it correct ?

- Do you vary the impact position of the proton or
take just the middle of the bar ?

------------------
Slide 3:
------------------

- Cherenkov radiation is prompt, scintillation is
slow. How can the second arrives earlier ?

------------------
Slide 5:
------------------

- The scale factor describes the fraction of detected
light. I am not sure it drives the resolution. Can not
you consider only the photons within the sensor
equivalent area ?

------------------
Slide 6:
------------------

- What is the difference between coloumn 2 and 3: is
the 2 the first photon, and 3 the threshold time ?

- Which electronics are you considering ?

- In the last two rows, 10 mm is thickness or width ?
Row 4 is better than row 2, and row 5 is better than 3
while I would expect the contrary for wider tiles.

I guess PANDA combines the sensors at both ends, i.e.
has a sort of 1/sqrt(2) improvement.


You may consider also this benchmark:

T.~Rostomyan et al., {\it Timing detectors with SiPM 
read-out for the MUSE experiment at PSI},
Nucl. Instrum. Meth. A 986 (2021) 164801.

Ciao, Marco.

On Mon, 17 Feb 2025, Nilanga Wickramaarachchi, Ph.D. via Clas12_rgh wrote:

> Hi All,
> 
> I uploaded a few slides on TOF timing resolution studies to the meeting wiki page.
> https://clasweb.jlab.org/wiki/images/b/b2/RGH_Update_02_17_2025.pdf
> I can present it at the next meeting.
> 
> Regards,
> Nilanga Wickramaarachchi
> 
> ___________________________________________________________________________________________________________________________________________________________________________________________________
> From: Clas12_rgh <clas12_rgh-bounces at jlab.org> on behalf of Marco Contalbrigo via Clas12_rgh <clas12_rgh at jlab.org>
> Sent: Sunday, February 16, 2025 4:11 AM
> To: clas12_rgh at jlab.org <clas12_rgh at jlab.org>
> Subject: [Clas12_rgh] [EXTERNAL] RGH meeting February 17  
> Dear all,
> the next RGH meeting is scheduled for Monday
> February 17 at 8:00 am EST (2 pm CET).
> 
> We will discuss the recoil status and plans
> for background studies.
> 
> Please let me know if you are ready to present a
> contribution and be ready to upload it on the
> wiki:
> https://urldefense.com/v3/__https://clasweb.jlab.org/wiki/index.php/RGH_Meetings__;!!OToaGQ!qMC9F600sjSQKu3j2cz-W7cmU8LVgIqaw8glXNY07ROPiounVSgFCSwLxP0H9OTU5Hm_KK4gX5twu7pQ4UT3_OwhCpW-CPQm$
> 
> Zoom connection details:
> ID 160 307 2676
> Code 273174
> 
> See you there, Marco.
> 
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