Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Poster (a)

HK 51.16: Poster

Thursday, April 2, 2020, 16:30–18:30, Zelt

Design Studies on cryopumps for PANDA at FAIR — •Christian Mannweiler, Daniel Klostermann, Benjamin Hetz, Daniel Bonaventura, and Alfons Khoukaz — Westfälische Wilhelms Universität, Münster, Deutschland

The PANDA experiment at the future HESR accelerator at FAIR will aim to explore open questions about the strong interaction, the existence of exotic particles as well as other topics by utilising anti-proton-proton collisions. For these studies, optimal vacuum conditions are crucial for event reconstruction, background suppression as well as antiproton beam lifetime.

To this end, novel cryopump geometries for a possible installation at the HESR beam pipe were studied and simulated. A cryopump employs a different operating principle from other conventional pumps such as turbo- or roots pumps. In a cryopump, a suitable medium such as activated charcoal is cooled to cryogenic temperatures of well below 20 K. At these temperatures atoms and even hydrogen molecules which impinge on the carbon surface are adsorbed without being desorbed later, creating a pumping mechanism.

Design studies were performed to identify a cryopump geometry which is suited best to PANDA’s unique needs before simulating these pumps with the MOLFLOW+ software package.

These design studies as well as the obtained simulation results will be presented and discussed.

This project has received funding from BMBF (05P19PMFP1) and GSI F & E