Investigation of electronic flow regulated J-T cooling system for detector cooling applications *

Abstract

An improved fixed orifice Joule Thomson cooling system has been obtained to provide a viable alternative to self-regulating Joule Thomson (J-T) coolers. It is based on the fact that Joule Thomson coolers require sufficiently lower gas flow for continued liquid formation. The inherent problem of high gas consumption of the system is solved electronically by reducing the gas flow to a sufficient level. Normally, in a self-regulated Joule Thompson cooling system, the flow reduction is achieved by reducing expansion orifice area through temperature-controlled mechanical bellow mechanism or flow area control mechanisms. In this article, an effort has been made to provide a gas-independent alternative to a self-regulating system which is always fluid specific.