[Halld-pid-upgrade] [EXTERNAL] DIRC TIPP abstract

[Jochen Schwiening]

Hi Roman,

I like the abstract, would only propose to update the content a little 
bit from the version you wrote for the DPG a year ago.

Since 2018 is no longer so "recent" - instead of "was recently 
installed" one could say "was installed in 2018".

Is everyone still using only commissioning data, nothing from the 
GlueX-II run in 2020? If we do include GlueX-II data I would suggest to 
change the title to "Performance of the GlueX DIRC detector" or "Initial 
Performance of the GlueX DIRC detector" if you want to be extra careful 
and leave room for update talks in the near future.
Similarly, I would then remove the reference to "during commissioning" 
in the last sentence.

Since you have about 100 characters left, you could add a little bit 
more detail if something comes to mind but I actually think that the 
abstract is pretty complete.

Cheers,
	Joe

On 2/5/2021 5:03 PM, Roman Dzhygadlo wrote:
> Dear colleagues,
> 
> below is an abstract for the TIPP conference. (It is the same we used 
> for the Deutsche Physikalische Gesellschaft meeting which got canceled). 
> Please let me know if you have any additional comments/suggestions 
> (preferably before Feb 7).
> 
> best regards,
> Roman
> 
> Performance of the GlueX DIRC during commissioning.
> 
> The GlueX experiment at Jefferson Laboratory aims to perform
> quantitative tests of non-perturbative QCD by studying the spectrum
> of light-quark mesons and baryons.
> A Detector of Internally Reflected Cherenkov light (DIRC) was recently
> installed to enhance the particle identification (PID) capability of
> the GlueX experiment by providing clean π/K separation up to 3.7 GeV/c
> momentum in the forward region (θ<11 deg), which will allow the study
> of hybrid mesons decaying into kaon final states with significantly
> higher efficiency and purity.
> The new PID system is build using radiators from the decommissioned
> BaBar DIRC counter, combined with new compact photon cameras based on
> the SuperB FDIRC concept.
> The full system was successfully installed and commissioned with beam 
> during 2019/2020.
> We will discuss the status of the DIRC detector and its performance 
> during commissioning.
> 
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