A Prototype of the Cryogenic Corpuscular Hydrogen Target for the PANDA Experiment

IF 0.4 4区工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY

Instruments and Experimental Techniques Pub Date : 2024-07-08 DOI:10.1134/S0020441224700568

P. V. Fedorets, V. D. Chernetsky, P. V. Balanutsa, A. S. Gerasimov, A. A. Golubev, L. N. Gusev, A. G. Dolgolenko, A. V. Kantsyrev, V. I. Karasev, N. M. Kristi, E. M. Ladygina, S. A. Makagonov, V. A. Panyushkin, A. N. Paniushkina, I. A. Tarasenko, A. B. Khalyavin

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Abstract

A regular monodisperse flow of spherical microtargets of solid hydrogen or deuterium with a variable diameter of several tens of micrometers and a frequency from several tens to several hundreds of kilohertz is in demand as internal targets in physical experiments at accelerators. The paper is devoted to the modification and launching of a prototype cryogenic corpuscular hydrogen target in which the gas entering the facility is transformed into a flow of spherical microtargets. Processes of cryogenic cooling and liquefaction of the gas, formation of a liquid microjet, and its controlled monodisperse disintegration into equal-sized drops are realized in the target, and they are followed by freezing of the drops and formation of microtargets upon injection into vacuum. The target prototype is composed of the cryogenic, vacuum, and gas systems as well as the systems for control and optical diagnostics of microtarget parameters. The modified target prototype provided monodisperse regimes of generation of microtargets with a diameter of 20–50 μm at a generation frequency of 260–465 kHz.

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用于 PANDA 实验的低温靠模氢靶原型

摘要在加速器的物理实验中，需要一种规则的单分散固态氢或氘球形微靶流，其直径为几十微米，频率为几十到几百千赫兹。本文专门讨论了低温球状氢靶原型的改造和发射，在该原型中，进入设备的气体被转化为球状微靶流。在靶中实现了气体的低温冷却和液化、液态微射流的形成及其受控单分散分解成大小相等的液滴的过程，随后液滴冻结，并在注入真空后形成微靶。靶原型由低温、真空和气体系统以及微靶参数控制和光学诊断系统组成。改进后的靶原型可在 260-465 kHz 的生成频率下生成直径为 20-50 μm 的单分散微靶。

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来源期刊

Instruments and Experimental Techniques 工程技术-工程：综合

CiteScore

1.20

自引率

33.30%

发文量

113

审稿时长

4-8 weeks

期刊介绍： Instruments and Experimental Techniques is an international peer reviewed journal that publishes reviews describing advanced methods for physical measurements and techniques and original articles that present techniques for physical measurements, principles of operation, design, methods of application, and analysis of the operation of physical instruments used in all fields of experimental physics and when conducting measurements using physical methods and instruments in astronomy, natural sciences, chemistry, biology, medicine, and ecology.