STAR HardProbes PWG

[Nihar Sahoo <nihar AT rcf.rhic.bnl.gov>]

Hello Rongrong,

We do not have any hp physics proposal in the past BUR 23-25 documents 
for AuAu runs for Jet measurements except gamma trigger.

So I guess no one has plan also to analyze BHT2 trigger.

> I am not sure who is interested in analyzing BHT1 trigger, but it
> could at least serve as the bridge between MB and BHT2 triggers for
> trigger bias evaluation
It is a good idea. If we need BHT with lower threshold , then BHT1 can 
serve the purpose.


Nihar


On 2023-06-19 21:36, Ma, Rongrong via Star-hp-l wrote:
> Hello Isaac
>
> For the HP-related triggers, what matters is the sampled luminosity
> rather the number of events. Of course, the ideal case would be
> sampling full luminosity, but as you noted the rates for dimuon and
> BHT1 are too high. For BHT2 (Upsilon) and BHT3 (gamma+jet) triggers,
> we should allocate enough bandwidths such that they can sample the
> full luminosity.
>
> One question: is the BHT2 trigger used for jet measurements in
> general?
>
> For the dimuon trigger, our plan is to tighten the trigger time window
> cut and apply a pre-scale to reduce it to 1 kHz.
>
> I am not sure who is interested in analyzing BHT1 trigger, but it
> could at least serve as the bridge between MB and BHT2 triggers for
> trigger bias evaluation.
>
> Best
> Rongrong
>
> > On Jun 16, 2023, at 5:38 PM, Mooney, Isaac via Star-hp-l
> > <star-hp-l AT lists.bnl.gov> wrote:
> >
> > Hi all,
> >
> > As I mentioned in the PWG meeting on the 8th, we’ve been asked to
> > give input on the prescales for HardProbes-related triggers for the
> > upcoming high-luminosity data-taking period. Specifically, due to
> > high rates from the dimuon and BHT1 triggers, these may require a
> > high prescale to limit their bandwidth. Our request is for analyzers
> > planning to use Run 23 data with these triggers to provide a desired
> > overall number of events for each trigger in order to meet the
> > physics goals for the analysis. If we assume a given number of weeks
> > of running, this then gives a rough estimate of the prescale we
> > should apply.
> >
> > I’m also linking my slides from last week
> (https://drupal.star.bnl.gov/STAR/system/files/TriggerRates100k_Run23.pdf)
> > with a few changes, including a rate table on the last slide
> > estimated by Akio, along with some back-of-the-envelope calculations
> > I added for the prescale of these two triggers.
> >
> > Please let us know if you have any questions or input.
> >
> > Thanks,
> > Isaac, Nihar, and Yi _______________________________________________
> > Star-hp-l mailing list
> > Star-hp-l AT lists.bnl.gov
> > https://lists.bnl.gov/mailman/listinfo/star-hp-l
> _______________________________________________
> Star-hp-l mailing list
> Star-hp-l AT lists.bnl.gov
> https://lists.bnl.gov/mailman/listinfo/star-hp-l