EVALUATION OF ENERGY RESOLUTION BY CHANGING ANGLE AND POSITION OF INCIDENT PHOTON IN A LYSO CALORIMETER

Saad A. M. E., Kocak F.

ACTA PHYSICA POLONICA B, cilt.51, sa.11, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 51 Sayı: 11
  • Basım Tarihi: 2020
  • Doi Numarası: 10.5506/aphyspolb.51.2097
  • Dergi Adı: ACTA PHYSICA POLONICA B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Central & Eastern European Academic Source (CEEAS), Compendex, INSPEC, zbMATH
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

In this paper, we investigate the effect on energy resolution from changing the angle and the position of incidence photon for a 5 x 5 crystal matrix built with (25 x 25 x 200) mm(3) LYSO scintillating crystals. Those crystals have been proposed for the electromagnetic calorimeter of the Turkish Accelerator Center-Particle Factory (TAC-PF) detector. The energy resolution was obtained as sigma(E)/E = 0.42%/ root E/GeV circle plus 1.60% at the center of the matrix in the energy range of 50 MeV to 2 GeV. When we examined the dependence of the energy resolution on the incidence angle of the photon, resolution began to deteriorate at angles greater than 2 degrees on the 5 x 5 crystal matrix. Moreover, energy resolution at the corners of the central crystal was worse than at the center of the central crystal by a factor of 1.3 at 50 MeV and 1.1 at 2 GeV.