Products

JDry-100-ASTRA Cryogen Free Dilution Refrigerator

Overview

Click button below to enlarge view of model JDry-100-ASTRA cryogen free dilution refrigerator for astronomy from Janis Research

Janis Research offers a cryogen free dilution refrigerator for cosmic microwave background studies, model JDry-100-ASTRA.

The instrument will be installed in the cryogenic laboratory of the Physics Department of the University of Trento, in the framework of the MEMS collaboration between Istituto Nazionale di Fisica Nucleare (INFN) and the Istituto di Ricerca Sceintifica e Tecnologica of the Fondazione Bruno Kessler (FBK-irst). The telescope will be used to test at very low temperature arrays of resonating bolometers (MKID) to be used for the CMB polarization measurement on future space missions and ground based experiments.  

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Standard Configuration

Click image to enlarge photo of JDry-100-ASTRA, sideview, cryogen free dilution refrigerator for astronomy from Janis ResearchJanis Research has successfully tested a JDry-100-ASTRA cryogen free 3He-4He dilution refrigerator, which has an ability to work in a wide range of tilting angles -20 to +53 degrees from vertical, providing cooling power to a novel type of sensor for cosmic microwave background studies.

The instrument will be installed in the cryogenic laboratory of the Physics Department of the University of Trento, in the framework of the MEMS collaboration between Istituto Nazionale di Fisica Nucleare (INFN) and the Istituto di Ricerca Sceintifica e Tecnologica of the Fondazione Bruno Kessler (FBK-irst). The telescope will be used to test at very low temperature arrays of resonating bolometers (MKID) to be used for the CMB polarization measurement on future space missions and ground based experiments.

The system employs a power-savvy and quiet pulse tube cryocooler with remote distribution valve. It takes only 40 hours to cool to the base temperature of 15 mK thanks to a common vacuum space and efficient mechanical heat-switch design.

The current system has a measured cooling power of 120 microwatts at 100 mK with a single mechanical vane pump, and can be upgraded to an automated gas handling system, Janis model GHS2, equipped with a more powerful oil-free hermetic 6-stage Roots pump. This upgrade ensures full remote control of the cooling process, as well as higher cooling power.

 

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Specifications

JDry-100 Cooling Power Chart

Model JDry-100 cryogen free dilution refrigerator cooling power chart, Janis Research, cryogenics, ultra low temperature

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