• Medientyp: E-Artikel
  • Titel: A large acceptance scintillator detector with wavelength shifting fibre readout for search of eta-nucleus bound states
  • Beteiligte: Betigeri, M. G. [VerfasserIn]; Biswas, P. K. [VerfasserIn]; Kliczewski, S. [VerfasserIn]; Kirillov, Da. [VerfasserIn]; Kirillov, Di. [VerfasserIn]; Kolev, D. [VerfasserIn]; Kravcikova, M. [VerfasserIn]; Kutsarova, T. [VerfasserIn]; Lesiak, M. [VerfasserIn]; Lieb, J. [VerfasserIn]; Machner, H. [VerfasserIn]; Magiera, A. [VerfasserIn]; Budzanowski, A. [VerfasserIn]; Maier, R. [VerfasserIn]; Martinska, G. [VerfasserIn]; Nedev, S. [VerfasserIn]; Piskunov, N. [VerfasserIn]; Prasuhn, D. [VerfasserIn]; Protic, D. [VerfasserIn]; Ritman, J. [VerfasserIn]; von Rossen, P. [VerfasserIn]; Roy, B. J. [VerfasserIn]; Shukla, P. [VerfasserIn]; Chatterjee, A. [VerfasserIn]; [...]
  • Erschienen: North-Holland Publ. Co., 2007
  • Erschienen in: Nuclear instruments & methods in physics research / A 578, 198 - 206 (2007). doi:10.1016/j.nima.2007.04.159
  • Sprache: Englisch
  • DOI: https://doi.org/10.1016/j.nima.2007.04.159
  • ISSN: 0168-9002
  • Schlagwörter: WLS optical fibre readout ; scintillator detector ; eta-nucleus bound states
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  • Beschreibung: A large acceptance scintillator detector with wavelength shifting optical fibre readout has been designed and built to detect the decay particles of eta-nucleus bound system (the so-called eta-mesic nuclei), namely, protons and pions. The detector, named as ENSTAR detector, consists of 122 pieces of plastic scintillator of various shapes and sizes, which are arranged in a cylindrical geometry to provide particle identification, energy loss and coarse position information for these particles. A solid angle coverage of similar to 95% of total 4 pi is obtained in the present design of the detector. Monte Carlo phase space calculations performed to simulate the formation and decay of eta-mesic nuclei suggest that its decay particles, the protons and pions are emitted with an opening angle of 150 +/- 20 degrees, and with energies in the range of 25-300 and 225-450 MeV, respectively. The detailed GEANT simulations show that similar to 80% of the decay particles (protons and pions) can be detected within ENSTAR. Several test measurements using alpha source, cosmic-ray muons, etc. have been carried out to study the response of ENSTAR scintillator pieces. The in-beam tests of fully assembled detector with proton beam of momentum 870 MeV/c from the Cooler synchrotron COSY have been performed. The test results show that the scintillator fibre design chosen for the detector.
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