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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Instrumentation XII

HK 51.4: Vortrag

Donnerstag, 30. März 2017, 17:30–17:45, F 072

A Magnetically Driven Piston Pump for High-Purity Xenon Experiments — •Axel Buß, Christian Huhmann, Denny Schulte, Christian Weinheimer, Hans-Werner Ortjohann, Michael Murra, and Alexander Figuth — Institut für Kernphysik, Münster

In this talk, a new pump is presented which was designed for xenon gas recirculation in cooperation with the nEXO group at Stanford University and the nEXO/XENON group at Rensselaer Polytechnic Institute. It was built to meet the vast requirements of high-purity experiments like XENON1T, in terms of purity, performance and reliability. This is achieved by using a reciprocating compressor type with a magnetically driven piston. Even in a case of failure, the hermetically sealed design ensures cleanness of the pump medium at all times. Therefore the pump can be used for other applications where intrinsic safety and purity are necessary.

All parts have been carefully selected to minimize impurities and radioactive background, with the aim to reduce radon emanation below the level of commercially available pumps. At present the prototype in Münster is capable of pumping more than 100 slpm of argon at a differential pressure of 1 bar. Planned upgrades will enhance the performance further.

This project is supported by BMBF under contract 05A14PM1.