STAR HardProbes PWG

["Ma, Rongrong" <marr AT bnl.gov>]

Hello Nihar

I think we have sub-subtructure measurements mentioned in the BUR. Even if 
not mentioned in the BUR, Run23+25 dataset still provide a great opportunity 
for jet measurements in general, which is why I asked what HT trigger do 
people usually use for such measurements. 

Best
Rongrong

> On Jun 19, 2023, at 1:00 PM, Nihar Sahoo <nihar AT rcf.rhic.bnl.gov> wrote:
> 
> 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
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