Properties of the CsI(Tl) detector elements of the CALIFA detector

Alexander Knyazev; Joochun Park; Pavel Golubev; Joakim Cederkäll; H Alvarez-Pol; P. Cabanelas; Enrique Casarejos; L. Causeret; D Cortina-Gil; P. Diaz Fernandez; M. Feijoo; D. Galaviz; E. Galiana; R. Gernhäuser; A. Hartig; A Heinz; B. Heiss; A. Ignatov; H. T. Johansson; P. Klenze; T. Kröll; T Nilsson; A. Perea; H. B. Rhee; O Tengblad; P. Teubig

doi:10.1016/j.nima.2019.06.045

Properties of the CsI(Tl) detector elements of the CALIFA detector

Alexander Knyazev, Joochun Park, Pavel Golubev, Joakim Cederkäll, H Alvarez-Pol, P. Cabanelas, Enrique Casarejos, L. Causeret, D Cortina-Gil, P. Diaz Fernandez, M. Feijoo, D. Galaviz, E. Galiana, R. Gernhäuser, A. Hartig, A Heinz, B. Heiss, A. Ignatov, H. T. Johansson, P. KlenzeT. Kröll, T Nilsson, A. Perea, H. B. Rhee, O Tengblad, P. Teubig

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Abstract

In the RB experiment at FAIR, charged particles with energies up to 600 MeV and forward boosted -rays with energies up to 20 MeV need to be detected in scattering experiments. Calorimeters for nuclear physics experiments of this kind, using relativistic radioactive ion beams, require high energy resolution and high efficiency for simultaneous detection of strongly Doppler shifted -rays and high-energy charged particles. A calorimeter design that can meet these requirements, using CsI(Tl) scintillators, results in detector elements that may exhibit light output variations with crystal depth, which can limit the attainable resolution. In this paper we present results from a systematic study of 478 detector modules of CALIFA, the RB calorimeter, in order to determine and minimize such variations. To facilitate further systematic studies we also present results for the total absorption length of the scintillation light, using spectrophotometry, light crosstalk between adjacent detector modules, and surface topography of the CsI(Tl) crystals from atomic force microscopy.

Original language	English
Pages (from-to)	393-404
Journal	Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
Volume	940
DOIs	https://doi.org/10.1016/j.nima.2019.06.045
Publication status	Published - 2019

Subject classification (UKÄ)

Subatomic Physics

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10.1016/j.nima.2019.06.045

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Knyazev, A., Park, J., Golubev, P., Cederkäll, J., Alvarez-Pol, H., Cabanelas, P., Casarejos, E., Causeret, L., Cortina-Gil, D., Diaz Fernandez, P., Feijoo, M., Galaviz, D., Galiana, E., Gernhäuser, R., Hartig, A., Heinz, A., Heiss, B., Ignatov, A., Johansson, H. T., ... Teubig, P. (2019). Properties of the CsI(Tl) detector elements of the CALIFA detector. Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 940, 393-404. https://doi.org/10.1016/j.nima.2019.06.045

@article{e1c638faf65a4fedb45b6284c8632156,

title = "Properties of the CsI(Tl) detector elements of the CALIFA detector",

abstract = "In the RB experiment at FAIR, charged particles with energies up to 600 MeV and forward boosted -rays with energies up to 20 MeV need to be detected in scattering experiments. Calorimeters for nuclear physics experiments of this kind, using relativistic radioactive ion beams, require high energy resolution and high efficiency for simultaneous detection of strongly Doppler shifted -rays and high-energy charged particles. A calorimeter design that can meet these requirements, using CsI(Tl) scintillators, results in detector elements that may exhibit light output variations with crystal depth, which can limit the attainable resolution. In this paper we present results from a systematic study of 478 detector modules of CALIFA, the RB calorimeter, in order to determine and minimize such variations. To facilitate further systematic studies we also present results for the total absorption length of the scintillation light, using spectrophotometry, light crosstalk between adjacent detector modules, and surface topography of the CsI(Tl) crystals from atomic force microscopy.",

author = "Alexander Knyazev and Joochun Park and Pavel Golubev and Joakim Cederk{\"a}ll and H Alvarez-Pol and P. Cabanelas and Enrique Casarejos and L. Causeret and D Cortina-Gil and \{Diaz Fernandez\}, P. and M. Feijoo and D. Galaviz and E. Galiana and R. Gernh{\"a}user and A. Hartig and A Heinz and B. Heiss and A. Ignatov and Johansson, \{H. T.\} and P. Klenze and T. Kr{\"o}ll and T Nilsson and A. Perea and Rhee, \{H. B.\} and O Tengblad and P. Teubig",

year = "2019",

doi = "10.1016/j.nima.2019.06.045",

language = "English",

volume = "940",

pages = " 393--404",

journal = "Nuclear Instruments \& Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier",

}

Knyazev, A, Park, J, Golubev, P , Cederkäll, J, Alvarez-Pol, H, Cabanelas, P, Casarejos, E, Causeret, L, Cortina-Gil, D, Diaz Fernandez, P, Feijoo, M, Galaviz, D, Galiana, E, Gernhäuser, R, Hartig, A, Heinz, A, Heiss, B, Ignatov, A, Johansson, HT, Klenze, P, Kröll, T, Nilsson, T, Perea, A, Rhee, HB, Tengblad, O & Teubig, P 2019, 'Properties of the CsI(Tl) detector elements of the CALIFA detector', Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, vol. 940, pp. 393-404. https://doi.org/10.1016/j.nima.2019.06.045

TY - JOUR

T1 - Properties of the CsI(Tl) detector elements of the CALIFA detector

AU - Knyazev, Alexander

AU - Park, Joochun

AU - Golubev, Pavel

AU - Cederkäll, Joakim

AU - Alvarez-Pol, H

AU - Cabanelas, P.

AU - Casarejos, Enrique

AU - Causeret, L.

AU - Cortina-Gil, D

AU - Diaz Fernandez, P.

AU - Feijoo, M.

AU - Galaviz, D.

AU - Galiana, E.

AU - Gernhäuser, R.

AU - Hartig, A.

AU - Heinz, A

AU - Heiss, B.

AU - Ignatov, A.

AU - Johansson, H. T.

AU - Klenze, P.

AU - Kröll, T.

AU - Nilsson, T

AU - Perea, A.

AU - Rhee, H. B.

AU - Tengblad, O

AU - Teubig, P.

PY - 2019

Y1 - 2019

N2 - In the RB experiment at FAIR, charged particles with energies up to 600 MeV and forward boosted -rays with energies up to 20 MeV need to be detected in scattering experiments. Calorimeters for nuclear physics experiments of this kind, using relativistic radioactive ion beams, require high energy resolution and high efficiency for simultaneous detection of strongly Doppler shifted -rays and high-energy charged particles. A calorimeter design that can meet these requirements, using CsI(Tl) scintillators, results in detector elements that may exhibit light output variations with crystal depth, which can limit the attainable resolution. In this paper we present results from a systematic study of 478 detector modules of CALIFA, the RB calorimeter, in order to determine and minimize such variations. To facilitate further systematic studies we also present results for the total absorption length of the scintillation light, using spectrophotometry, light crosstalk between adjacent detector modules, and surface topography of the CsI(Tl) crystals from atomic force microscopy.

AB - In the RB experiment at FAIR, charged particles with energies up to 600 MeV and forward boosted -rays with energies up to 20 MeV need to be detected in scattering experiments. Calorimeters for nuclear physics experiments of this kind, using relativistic radioactive ion beams, require high energy resolution and high efficiency for simultaneous detection of strongly Doppler shifted -rays and high-energy charged particles. A calorimeter design that can meet these requirements, using CsI(Tl) scintillators, results in detector elements that may exhibit light output variations with crystal depth, which can limit the attainable resolution. In this paper we present results from a systematic study of 478 detector modules of CALIFA, the RB calorimeter, in order to determine and minimize such variations. To facilitate further systematic studies we also present results for the total absorption length of the scintillation light, using spectrophotometry, light crosstalk between adjacent detector modules, and surface topography of the CsI(Tl) crystals from atomic force microscopy.

UR - https://www.scopus.com/pages/publications/85067984424

U2 - 10.1016/j.nima.2019.06.045

DO - 10.1016/j.nima.2019.06.045

M3 - Article

SN - 0168-9002

VL - 940

SP - 393

EP - 404

JO - Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment

JF - Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment

ER -

Properties of the CsI(Tl) detector elements of the CALIFA detector

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Reactions with radioactive beams and development of scintillator-based detector systems

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