Электронный каталог

Статья

Gorodnov, I.S.
Dilution Refrigerator for Hydro-Moller Polarimeter @ MESA P2 Experiment : [Abstract] / I.S.Gorodnov, A.S.Dolzhikov // Физика элементарных частиц и атомного ядра. Письма. – 2023. – Т.20, №5. – P.1305. – URL: http://www1.jinr.ru/Pepan_letters/panl_2023_5/45_Gorodnov_ann.pdf.

The new Mainz Energy-recovering Superconducting Accelerator (MESA) is under construction. At the accelerator it is planned to carry out the P2 experiment which aims for a high- precision determination of the weak mixing angle sin2θW to a precision of 0.15% at a four- momentum transfer of 4.5 · 10−3 GeV2 . The planned time for collecting statistics is 11 000 h using a 150-μA polarized electron beam impinging on a 60-cm liquid hydrogen target. For continuous online measurement of polarization, a Hydro-Møller polarimeter is provided in the design of the P2 experiment. One of the main parts of this polarimeter is 3He/4He dilution refrigerator, which allows maintaining an ultra-low temperature (< 250 mK) in a continuous mode. A description of the design, construction and recent results of the horizontal dilution refrigerator for Hydro-Møller polarimeter @ MESA P2 experiment are given.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 393 б - Аппаратура для исследования при низких температурах и техника измерений. Мишени с жидкими газами. Термометрия