CsI(Tl) photon detector with PIN photodiode readout for a Kμ3 T-violation experiment

Dementyev, D. V.; Grigoriev, M. P.; Khabibullin, M.; Khotyantsev, A.; Kudenko, Y.; Mineev, O.; Aoki, M.; Imazato, J.; Kuno, Y.; Baker, T.; Blecher, M.; Depommier, P.; Hasinoff, M.; Igarashi, Y.; Ikeda, Tokihiro; Macdonald, J. A.; Mindas, C.; Rangacharyulu, C.; Shimizu, S.; Yokoi, T.

doi:10.1016/s0168-9002(99)00890-6

Cited by 24 publications

(8 citation statements)

References 11 publications

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“…Long-term performance of EJ500 in this context remains to be evaluated, but it is expected to be superior for reasons predefined. On the other hand, it is known that crystals can suffer from radiation damage during in-beam operation, leadinf to the formation of color centres 9.0 ± 0.5 6.7 ± 0.5 6.5 ± 0.7 6.1 ± 0.3 6.8 ± 0.2 5.0 ± 0.3 5 170 8.0 ± 0.4 6.9 ± 0.7 6.3 ± 0.3 2.0 ± 0.1 3.9 ± 0.2 1.6 ± 0.2 6 170 8.5 ± 0.6 7.7 ± 1.0 6.9 ± 0.3 2.9 ± 0.1 2.3 ± 0.1 0.9 ± 0.1 reducing light transmission, which results in a decrease of the photon yield and therefore in a light uniformity deterioration [19,17]. However, changes in light yield and light output degradations related with radiation damage are not expected due to the short running periods and low radiation level of the R 3 B experiments [3].…”

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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“…1. Because of the rotational symmetry of the 12 identical gaps in the spectrometer and the large directional acceptance of the photon detector [15], distortions of the K π2γ spectra due to instrumental misalignment, if any, were drastically reduced.…”

Section: Methodsmentioning

confidence: 99%

Measurement of direct photon emission in K+→π+π0γ decay using stopped positive kaons

et al. 2003

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“…We detected both of the π 0 decay gammas which enabled us to reconstruct the complete kinematics of a K l3 event in contrast to the previous experiment [8]; this increased the reliability of the event selection. Because of the rotational symmetry of the 12 identical gaps in the spectrometer and the large directional acceptance of the π 0 detector [9], distortions due to detector acceptance were drastically reduced. Moreover, the similarity of the K µ3 and K e3 kinematics reduced the systematic error due to the imperfect reproducibility of the experimental conditions in the simulation of the ratio of the calculated acceptance for the K µ3 and K e3 decays.…”

Section: Methodsmentioning

confidence: 99%

Measurement of Γ(K3)/Γ(K3) ratio using stopped positive kaons

Horie

Shimizu

et al. 2001

Physics Letters B

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The ratio of the K + → π 0 µ + ν (K + µ3 ) and K + → π 0 e + ν (K + e3 ) decay widths, Γ(K µ3 )/Γ(K e3 ), has been measured with stopped positive kaons. K + µ3 and K + e3 samples containing 2.4×10 4 and 4.0×10 4 events, respectively, were analyzed. The Γ(K µ3 )/Γ(K e3 ) ratio was obtained to be 0.671±0.007(stat.)±0.008(syst.) calculating the detector acceptance by a Monte Carlo simulation. The coefficient of the q 2 dependent term of the f 0 form factor was also determined to be λ 0 =0.019±0.005(stat.)±0.004(syst.) with the assumption of µ-e universality in K + l3 decay. The agreement of our result with the λ 0 value obtained from K + µ3 Dalitz plot analyses supports the validity of the µ-e universality.

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CsI(Tl) photon detector with PIN photodiode readout for a Kμ3 T-violation experiment

Cited by 24 publications

References 11 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

Measurement of direct photon emission in K+→π+π0γ decay using stopped positive kaons

Measurement of Γ(K3)/Γ(K3) ratio using stopped positive kaons

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