The light output produced by light ions (Z≤4) in CsI(Tl) crystals is studied over a wide range of detected energies (E≤300MeV). Energy-light calibration data sets are obtained with the 10 cm crystals in the recently upgraded High-Resolution Array (HiRA10). We use proton recoil data from 40,48 Ca + CH 2 at 28 MeV/u, 56.6 MeV/u, 39 MeV/u and 139.8 MeV/u and data from a dedicated experiment with direct low-energy beams. We also use the punch through points of p, d, and t particles from 40,48 Ca + 58,64 Ni, 112,124 Sn collisions reactions at 139.8 MeV/u. Non-linearities, arising in particular from Tl doping and light collection effects in the CsI crystals, are found to significantly affect the light output and therefore the calibration of the detector response for light charged particles, especially the hydrogen isotopes. A new empirical parametrization of the hydrogen light output, L(E,Z=1,A), is proposed to account for the observed effects. Results are found to be consistent for all 48 CsI(Tl) crystals in a cluster of 12 HiRA10 telescopes.
Non-linearity effects on the light-output calibration of light charged particles in CsI(Tl) scintillator crystals / Dell'Aquila, D.; Sweany, S.; Brown, K. W.; Chajecki, Z.; Lynch, W. G.; Teh, F. C. E.; Tsang, C. -Y.; Tsang, M. B.; Zhu, K.; Anderson, C.; Anthony, A.; Barlini, S.; Barney, J.; Camaiani, A.; Jhang, G.; Crosby, J.; Estee, J.; Ghazali, M.; Guan, F.; Khanal, O.; Kodali, S.; Lombardo, I.; Manfredi, J.; Morelli, L.; Morfouace, P.; Niu, C.; Verde, G.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 929:(2019), pp. 162-172. [10.1016/j.nima.2019.03.065]
Non-linearity effects on the light-output calibration of light charged particles in CsI(Tl) scintillator crystals
Dell'Aquila D.;
2019
Abstract
The light output produced by light ions (Z≤4) in CsI(Tl) crystals is studied over a wide range of detected energies (E≤300MeV). Energy-light calibration data sets are obtained with the 10 cm crystals in the recently upgraded High-Resolution Array (HiRA10). We use proton recoil data from 40,48 Ca + CH 2 at 28 MeV/u, 56.6 MeV/u, 39 MeV/u and 139.8 MeV/u and data from a dedicated experiment with direct low-energy beams. We also use the punch through points of p, d, and t particles from 40,48 Ca + 58,64 Ni, 112,124 Sn collisions reactions at 139.8 MeV/u. Non-linearities, arising in particular from Tl doping and light collection effects in the CsI crystals, are found to significantly affect the light output and therefore the calibration of the detector response for light charged particles, especially the hydrogen isotopes. A new empirical parametrization of the hydrogen light output, L(E,Z=1,A), is proposed to account for the observed effects. Results are found to be consistent for all 48 CsI(Tl) crystals in a cluster of 12 HiRA10 telescopes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
