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[Xu Sun <sunxuhit AT gmail.com>]

Hi Tonko, All,

We should have enough non-zs data, switching back to 1 to 100 should be fine for us.

Best,

Xu

On Fri, Dec 17, 2021 at 9:29 AM Visser, Gerard <gvisser AT indiana.edu> wrote:

I see no reason to have so much non-ZS. If a test run needs more e.g. to check the ADC timing, it can be changed for one run and then put back. But this even is probably not necessary.

      Gerard

---

From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> on behalf of Aschenauer Elke-Caroline <elke AT bnl.gov>
Sent: Friday, December 17, 2021 9:25 AM
To: Tonko Ljubicic <tonko AT bnl.gov>
Cc: Star-fst L <star-fst-l AT lists.bnl.gov>
Subject: Re: [Star-fst-l] FST deadtime and raw events in the data stream

 

As we are planning to get up in lumi, we need to change this, so the FST group should think what they need and why

Cheers elke

On Dec 17, 2021, at 09:15, Tonko Ljubicic <tonko AT bnl.gov> wrote:

Hello,

from the runs last night you can notice that FST
runs at 1.2 kHz with ~40% deadtime.

This is currently all due to the large number of non-zero-suppressed,
raw, events, currently 1 in 5.

If we plan to at least approximate the TPC (and we plan more
eventually) right now I propose we drop this enhanced
raw data percentage to 1 in 20 or even to the usual 1 in ~100.
I can't imagine why you would need so many of them but
it's not my call.

Let me know what you think,

      -- Tonko
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