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Betigeri, M. G. [Author]; Biswas, P. K. [Author]; Kliczewski, S. [Author]; Kirillov, Da. [Author]; Kirillov, Di. [Author]; Kolev, D. [Author]; Kravcikova, M. [Author]; Kutsarova, T. [Author]; Lesiak, M. [Author]; Lieb, J. [Author]; Machner, H. [Author]; Magiera, A. [Author]; Budzanowski, A. [Author]; Maier, R. [Author]; Martinska, G. [Author]; Nedev, S. [Author]; Piskunov, N. [Author]; Prasuhn, D. [Author]; Protic, D. [Author]; Ritman, J. [Author]; von Rossen, P. [Author]; Roy, B. J. [Author]; Shukla, P. [Author]; Chatterjee, A. [Author]; [...]

A large acceptance scintillator detector with wavelength shifting fibre readout for search of eta-nucleus bound states

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  • Media type: E-Article
  • Title: A large acceptance scintillator detector with wavelength shifting fibre readout for search of eta-nucleus bound states
  • Contributor: Betigeri, M. G. [Author]; Biswas, P. K. [Author]; Kliczewski, S. [Author]; Kirillov, Da. [Author]; Kirillov, Di. [Author]; Kolev, D. [Author]; Kravcikova, M. [Author]; Kutsarova, T. [Author]; Lesiak, M. [Author]; Lieb, J. [Author]; Machner, H. [Author]; Magiera, A. [Author]; Budzanowski, A. [Author]; Maier, R. [Author]; Martinska, G. [Author]; Nedev, S. [Author]; Piskunov, N. [Author]; Prasuhn, D. [Author]; Protic, D. [Author]; Ritman, J. [Author]; von Rossen, P. [Author]; Roy, B. J. [Author]; Shukla, P. [Author]; Chatterjee, A. [Author]; [...]
  • imprint: North-Holland Publ. Co., 2007
  • Published in: Nuclear instruments & methods in physics research / A 578, 198 - 206 (2007). doi:10.1016/j.nima.2007.04.159
  • Language: English
  • DOI: https://doi.org/10.1016/j.nima.2007.04.159
  • ISSN: 0168-9002
  • Keywords: scintillator detector ; eta-nucleus bound states ; WLS optical fibre readout
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: 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.
  • Access State: Open Access