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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Postersitzung

HK 34.15: Poster

Thursday, March 13, 2008, 14:00–16:00, Poster C3

The Differential Pumping System of KATRIN — •Aleksandra Gotsova¹ and Norbert Kernert² for the KATRIN collaboration — ¹IK,Karlsruhe,Deutschland — ²IK,Karlsruhe,Deutschland

The objective of the Karlsruhe Tritium Neutrino experiment (KATRIN) is to determine the absolute neutrino mass with 0.2 eV sensitivity, by measuring the integral electron energy spectrum near the endpoint of tritium beta decay. The decay electrons will be guided magnetically from the gaseous tritium source to the high resolution spectrometer. To prevent tritium gas from entering the UHV spectrometer section 16 turbo-molecular pumps (Leybold WMAG 2800) are foreseen to pump the gas out of the beam line. A central element of this system is the DPS2-F cryostat, currently being commissioned at the manufacturer. This talk gives a general overview of the DPS, focusing on the status of the DPS2-F (vacuum vessel and a LN2 shield, magnet vessels, helium tank, beam tubes and pump ports) and in particular on the initial measurement programme with the DPS2-F to verify the pumping and electron transport characteristics of this main component of KATRIN.

In part supported by BMBF project 05CK5VKA/5