Prototype of a DIRC-barrel for the P̄ANDA Experiment
- Resource Type
- Conference
- Authors
- Hohler, Roland; Lehmann, Dorothee; Peters, Klaus; Schepers, Georg; Schwarz, Carsten; Sfienti, Concettina; Konig, Wolfgang; Palka, Marek; Traxler, Michael
- Source
- 2008 IEEE Nuclear Science Symposium Conference Record Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE. :1556-1560 Oct, 2008
- Subject
- Nuclear Engineering
Power, Energy and Industry Applications
Fields, Waves and Electromagnetics
Engineered Materials, Dielectrics and Plasmas
Signal Processing and Analysis
Bioengineering
Prototypes
Detectors
Testing
Physics
Mesons
Magnetic fields
Rough surfaces
Surface roughness
Lenses
Protons
- Language
- ISSN
- 1082-3654
The P̄ANDA Experiment will be one of the large experiments of the future FAIR facility. The physics program requires a good kaon/pion-separation. To achieve this goal, three Cherenkov detectors are forseen. Around the interaction point a DIRC-barrel is planned with a readout-box inside the magnetic field. A radiator quality test is shown to point out the importance of the knowledge of the radiator surface roughness. The precision of the roughness determination itself is better than 2 Å. Furthermore the first prototype of a DIRC-barrel is presented in detail. The focussing readout is realized by a lens, attached at the end of the radiator. As photon detectors micro-channel plate PMTs are used to fulfill the requirement of an magnetic-insensitive detection. Finally preliminary results of a recent test with 2.3 GeV protons show the successful measurement of Cherenkov ring fragments in the expected region.