ePIC pfRICH mailing list

["Aschenauer, Elke" <elke AT bnl.gov>]

thanks for coming back to me. I think it will be really important to look at 10 x 275 GeV as the rates are really big

On Sep 18, 2025, at 05:18, Kiselev, Alexander <ayk AT bnl.gov> wrote:

  Dear Elke,

  Thank you for alerting us. Concerning the HRPPD aging due to these backgrounds, we do have a testbed in ePIC software environment pretty much set up and will be able to quantify the integrated optical photon fluence shortly, using the current ePIC detector geometry and the most up to date background files. Adding background hits to the reconstruction will require more time, and in particular will require splitting off the digitization step from IRT library into a standalone plugin. But this is coming in a not so distant future.

  Best regards,

       Alexander.

---

From: eic-projdet-pfrich-l-request AT lists.bnl.gov on behalf of Aschenauer, Elke
Sent: Monday, September 15, 2025 10:46 AM
To: eic-projdet-pfrich-l AT lists.bnl.gov
Cc: Aschenauer, Elke
Subject: [[Eic-projdet-pfrich-l] ] Rates in pfRICH 

Dear pfRICH-Experts,

I wanted to alert you all to the recent simulations including backgrounds. The incident rates due to backgrounds especially in the electron direction are very high, please seehttps://wiki.bnl.gov/EPIC/index.php?title=Background

The SVT group did a study if this rates at 18x275 GeV are still compatible with their readout and it seems yes the other energies need to follow. 

During the last tracking ands software meeting a first study on the impact on the tracking performance was presented for inclusive DIS https://indico.bnl.gov/event/29753/

I think it would be nice to know if the pfRICH  can safely operate under this rates at the different center of mass energies. i’m especially wondering how robust the ring reconstruction is with several real particles generating rings.

Thanks paying attention to this

elke

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