Abstract
The PANDA (anti-Proton ANnihiliation at DArmstadt) experiment will be one of the four flagship experiments at the new international accelerator complex FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany. PANDA will address fundamental questions of hadron physics and quantum chromodynamics using high-intensity cooled antiproton beams with momenta between 1.5 and 15 GeV/c and a design luminosity of up to 2 × 1032 cm-2 s-1. Excellent particle identification (PID) is crucial to the success of the PANDA physics program. Hadronic PID in the barrel region of the target spectrometer will be performed by a fast and compact Cherenkov counter using the detection of internally reflected Cherenkov light (DIRC) technology. It is designed to cover the polar angle range from 22° to 140° and will provide at least 3 standard deviations (s.d.) π/K separation up to 3.5GeV/c, matching the expected upper limit of the final state kaon momentum distribution from simulation. This documents describes the technical design and the expected performance of the PANDA Barrel DIRC detector. The design is based on the successful BaBar DIRC with several key improvements. The performance and system cost were optimized in detailed detector simulations and validated with full system prototypes using particle beams at GSI and CERN. The final design meets or exceeds the PID goal of clean π/K separation with at least 3 s.d. over the entire phase space of charged kaons in the Barrel DIRC.
Original language | English |
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Article number | 045001 |
Number of pages | 156 |
Journal | Journal of Physics G: Nuclear and Particle Physics |
Volume | 46 |
Issue number | 4 |
DOIs | |
Publication status | Published - 28 Feb 2019 |
Bibliographical note
Funding Information:This work was supported by the Bundesministerium für Bildung und Forschung (BMBF), HGS-HIRe, HIC for FAIR, the European Community FP6 FAIR Design Study: DIRAC secondary-Beams, contract number 515873, the European Community FP7 Integrated Infrastructure Initiative: Hadron Physics2, contract number 227431, and by the EIC detector R&D (eRD14) fund, managed by Brookhaven National Lab. We thank GSI and CERN staff for the opportunity to use the beam facilities and for their on-site support.
© 2019 Institute of Physics Publishing
Keywords
- DIRC counter
- hadron physics
- PANDA experiment
- particle identification
- ring imaging Cherenkov detector