[Halld-pid-upgrade] [EXTERNAL] Commissioning of the GlueX DIRC at JLab abstract

[Roman Dzhygadlo]

Dear colleagues,

below is an abstract for a DPG meeting (Deutsche Physikalische 
Gesellschaft, Apr 2020). Please let me know if you have some 
comments/suggestions (preferably before Dec 29).

best regards,
Roman

-- 
Dr. Roman Dzhygadlo
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Commissioning of the GlueX DIRC at JLab

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. The Detector of Internally
Reflected Cherenkov light (DIRC) is currently being installed to enhance
particle identification (PID) capability of the GlueX experiment by 
providing clean π/K
separation up to 4 GeV/c momenta 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 decommissioned BaBar DIRC
combined with new compact photon cameras based on SuperB FDIRC concept.
The first half of the system was successfully installed and
commissioned during winter 2018/2019. The full system commissioning
with beam is planned during Dec 2019. We will discuss the status of
the DIRC detector and its performance during commissioning.