CALIFA Barrel prototype detector characterisation

Pietras, B.; Gascón, M.; Álvarez‐Pol, H.; Bloch, Tanya; Casarejos, E.; Cortina-Gil, D.; Durán, I.; Fiori, Enrico; Gernhäuser, R.; González, D.; Kröll, T.; Bleis, T. Le; Montes, N.; Nácher, E.; Robles, M.; Perea, Á.; Vilán, José Antonio Vilán; Winkel, M.

doi:10.1016/j.nima.2013.06.063

Cited by 12 publications

(4 citation statements)

References 7 publications

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“…The final value of energy resolution is calculated by fitting the corresponding energy resolution values of all measured photopeaks to a function Res(E) = a √ E + b [13], widely confirmed to be the best match with experimental data in this kind of crystals [14], and evaluating it at E=1 MeV. The detected photopeaks energies are the 0.569 MeV and 1.064 MeV from 207 Bi, the 1.173 MeV and 1.332 MeV from 60 Co, and the 0.662 MeV from 137 Cs.…”

Section: Methods Results and Data Analysismentioning

confidence: 99%

Performance recovery of long CsI(Tl) scintillator crystals with APD-based readout

Cabanelas

González

Álvarez‐Pol

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

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CALIFA is the high efficiency and energy resolution calorimeter for the R 3 B experiment at FAIR, intended for detecting high energy light charged particles and gamma rays in scattering experiments, and is being commissioned during the Phase-0 experiments at FAIR, between 2018 and 2020. It surrounds the reaction target in a segmented configuration with 2432 detection units made of long CsI(Tl) finger-shaped scintillator crystals. CALIFA has a 10 year intended operational lifetime as the R 3 B calorimeter, necessitating measures to be taken to ensure enduring performance. In this paper we present a systematic study of two groups of 6 different detection units of the CALIFA detector after more than four years of operation. The energy resolution and light output yield are evaluated under different conditions. Tests cover the aging of the first detector units assembled and investigates recovery procedures for degraded detection units. A possible reason for the observed degradation is given, pointing to the crystal-APD coupling.

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Section: Methods Results and Data Analysismentioning

confidence: 99%

Performance recovery of long CsI(Tl) scintillator crystals with APD-based readout

Cabanelas

González

Álvarez‐Pol

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

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“…3. The Si tracker layers will be arranged in a conical geometry and will be placed inside CALIFA calorimeter [14], beam upstream before the superconducting GLAD magnet as shown in Fig. 4 (left).…”

Section: Uk R 3 Bmentioning

confidence: 99%

The UK NuStAR Project

Lalkovski¹,

Podolyak²,

Bentley³

et al. 2016

Acta Phys. Pol. B

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The UK NuStAR project is the largest nuclear physics project presently funded by the Science Technology Facilities Council (STFC) in UK. The aim of the project is to design, construct and deliver detectors and subdetector systems for FAIR. The main project deliverables are a DESPEC multidetector array for fast timing measurements, a HISPEC ToF detector for mass measurements after the secondary target, and the Si tracker for precise vertex determination in R 3 B experiments with liquid hydrogen target.

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“…This is in part due to the varied performance of the different crystals in this prototype and to the energy spread (40-50 keV) of the tagged gamma beam, which caused the broadening of the photopeak. In a later test, an upgraded set of crystals [21] was used and the energy resolution has been improved.…”

Section: Jinst 8 P10004mentioning

confidence: 99%

Characterization of a CsI(Tl) array coupled to avalanche photodiodes for the Barrel of the CALIFA calorimeter at the NEPTUN tagged gamma beam facility

et al. 2013

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Among the variety of crystal calorimeters recently designed for several physics facilities, CALIFA (CALorimeter for In-Flight emitted gAmmas and light-charged particles) has especially demanding requirements since it must perform within a very complicated energy domain (gamma-ray energies from 0.1 to 20 MeV and up to 300 MeV protons). As part of the R&D program for the Barrel section of CALIFA, a reduced geometry prototype was constructed. This prototype consisted of a 3 × 5 array of CsI(Tl) crystals of varying dimensions, coupled to large area avalanche photodiodes. Here reported are the details regarding the construction of the prototype and the experimental results obtained at the NEPTUN tagged gamma beam facility, reconstructing gamma energies up to 10 MeV. Dedicated Monte Carlo simulations of the setup were also performed, enabling a deeper understanding of the experimental data. The experimental results demonstrate the effectiveness of the reconstruction method and helped to establish the most suitable crystal geometry to be employed within the forthcoming calorimeter.

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CALIFA Barrel prototype detector characterisation

Cited by 12 publications

References 7 publications

Performance recovery of long CsI(Tl) scintillator crystals with APD-based readout

Performance recovery of long CsI(Tl) scintillator crystals with APD-based readout

The UK NuStAR Project

Characterization of a CsI(Tl) array coupled to avalanche photodiodes for the Barrel of the CALIFA calorimeter at the NEPTUN tagged gamma beam facility

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