Speaker
Dr.
Stanislav Potashev
(Institute for Nuclear Research of the Russian Academy of Sciences)
Description
Potashev S., Burmistrov Yu., Drachev A., Karaevsky S., Konobeevski E., Zuyev S.
Institute for Nuclear Research, Russian Academy of Sciences, 117312, Moscow, Russia
E-mail: potashev@inr.ru
Two-dimensional hybrid solid state gas multiwire detector of thermal and cold neutrons [1] is created at the Institute for Nuclear Research. The detector has an active area of 128 x 128 mm2 with double gas gap of 2 mm and a 10B converter. The input window is made of a thin aluminum layer (3mm) to prevent scattering and absorption of neutrons. The operation of the detector was studied using W-Be photoneutron source. The photoneutron source (IN-LUE) was created on the base of industrial electron linac LUE-8 operating at electron energy of 7 - 8 MeV, tungsten electron-gamma convertor, photoneutron beryllium target and moderator of fast neutrons. The detector is located at a distance of 6 m from the source at an angle of 60 relative to the electron beam axis. The detector efficiency is estimated as ~3% at neutron wavelength λ = 1.82 Å and 6% at λ = 8 Å. The efficiency of the background detection was less than 0.001% of that for thermal neutrons. The resulting pulse height resolution is 15% and the spatial resolution is 2.5 mm for the X coordinate with gas mixture Ar + 25% CO2 + 0.3% CF3Br under standard conditions. The resistive charge-division readout is applied to determine neutron position from pulse height values.
1. Litvin V.S., Potashev S.I., Razin V.I. and Sadykov R.A. Bull. Russ. Acad. Sci. 75, 229 (2011).
Primary author
Dr.
Stanislav Potashev
(Institute for Nuclear Research of the Russian Academy of Sciences)
Co-authors
Dr.
Alexander Drachev
(Institute for Nuclear Research of the Russian Academy of Sciences)
Dr.
Evgeny Konobeevski
(Institute for Nuclear research)
Dr.
Sergei Karaevsky
(Institute for Nuclear Research of the Russian Academy of Sciences)
Dr.
Sergei Zuyev
(Institute for Nuclear Research of the Russian Academy of Sciences)
Mr.
Yuri Burmistrov
(Institute for Nuclear Research of the Russian Academy of Sciences)
