A Photomultiplier With an AlGaN Photocathode and Microchannel Plates for BaF<sub>2</sub> Scintillator Detectors in Particle Physics

Atanov, N.; Davydov, Yuri; Glagolev, V.; Терещенко, В.; Нечаев, Д. В.; Ivanov, S. I.; Jmerik, Valentin

doi:10.1109/tns.2020.2998433

Cited by 6 publications

(2 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A high fraction of the slow component (about 85%) in the total luminescence can cause pile-up of signals at a high beam rate. To solve this problem, various approaches are being investigated: 1) the use of thin films on an avalanche photodetector [7] to suppress luminescence above 280 nm, 2) the use of a thin multilayer filter on the quartz glass substrate between the crystal and the photodetector to suppress luminescence in the range 250-400 nm [8], 3) the use of a solar-blind photomultiplier with an aluminum-gallium nitride (AlGaN) photocathode [9], 4) suppression of the slow scintillation component by doping a BaF 2 crystal with yttrium [10].…”

Section: Introductionmentioning

confidence: 99%

Light outputs of yttrium doped BaF_2 crystals irradiated with neutrons

Baranov¹,

Davydov²,

Vasilyev³

2022

J. Inst.

View full text Add to dashboard Cite

The fast luminescence component of barium fluoride (BaF_2) crystals with a subnanosecond decay time can find wide application in particle physics and nuclear physics. However, the slow luminescence component with the 630 ns decay time could cause pile-up signals at a high rate environment. Doping of BaF2 crystals with rare earth elements suppresses the slow emission component, but at the same time the radiation hardness of the crystals deteriorates. This work presents the results of studying crystal samples, both pure BaF2 and those doped with yttrium in a proportion of 1 at.%Y, 3 at.%Y and 5 at.%Y, irradiated with a fast neutron fluence of about 2.3×1014 n/cm2. Their light output and decay kinetics were measured before and after irradiation. It is found that the light output loss of a pure BaF2 crystal after irradiation is about 7%, and the light output loss of yttrium doped samples after irradiation is about two times higher. The measurement results demonstrate that after irradiation the fast component of each sample has a relative light output loss 2–3% larger than the slow one.

show abstract

Section: Introductionmentioning

confidence: 99%

Light outputs of yttrium doped BaF_2 crystals irradiated with neutrons

Baranov¹,

Davydov²,

Vasilyev³

2022

J. Inst.

View full text Add to dashboard Cite

show abstract

“…However, a high fraction of the slow component (about 85%) in the total luminescence can cause pile-up of signals at a high beam rate. To solve this problem, various approaches are being investigated: 1) the use of thin films on an avalanche photodetector [6] to suppress luminescence above 280 nm, 2) the use of a thin multilayer filter on the quartz glass substrate between the crystal and the photodetector to suppress luminescence in the range 250-400 nm [7], 3) the use of a solar-blind photomultiplier with an aluminum-gallium nitride (AlGaN) photocathode [8], 4) suppression of the slow scintillation component by doping a BaF 2 crystal with yttrium [9].…”

Section: Introductionmentioning

confidence: 99%

Light outputs of yttrium doped BaF$_2$ crystals irradiated with neutrons

Baranov,

Davydov,

Vasilyev

2021

Preprint

View full text Add to dashboard Cite

The fast luminescence component of barium fluoride (BaF 2 ) crystals with a subnanosecond decay time can find wide application in particle physics and nuclear physics. However, the slow luminescence component with the 630 ns decay time could cause pile-up signals at a high rate environment. Doping of BaF 2 crystals with rare earth elements suppresses the slow emission component, but at the same time the radiation hardness of the crystals deteriorates. This work presents the results of studying crystal samples, both pure BaF 2 and those doped with yttrium in a proportion of 1at.%Y, 3at.%Y and 5at.%Y, irradiated with a fast neutron fluence of about 2.3×10 14 n/cm 2 . Their light output and decay kinetics were measured before and after irradiation. It is found that the light output loss of a pure BaF 2 crystal after irradiation is about 7%, and the light output loss of yttrium doped samples after irradiation is about two times higher. The measurement results demonstrate that after irradiation the fast component of each sample has a relative light output loss 2-3% larger than the slow one.

show abstract