SAMOP 2021 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 1: Precision Mass Measurements I

MS 1.4: Talk

Monday, September 20, 2021, 11:45–12:00, H3

Transportable Cryostat and Permanent Magnet Trap for STEP — •Daniel Popper¹, Fatma Abbas¹, Matthew Bohman^1,2, Steffen Gavranovic¹, Cristina Ibanez¹, Ron Moller¹, Samuel Ruhl¹, Markus Wiesinger^2,3, Christian Will², Jack Devlin^3,4, Stefan Erlewein^3,4, Markus Fleck^3,5, Julia Jaeger^2,3, Barbara Latacz², Peter Micke^3,4, Elise Wursten^3,4, Klaus Blaum², Yasuyuki Matsuda⁵, Christian Ospelplaus^7,8, Wolfgang Quint⁶, Jochen Walz^1,9, Stefan Ulmer³, and Christian Smorra^1,3 — ¹Johannes Gutenberg University, Mainz, Germany — ²Max-Plank-Institute for Nuclear Physics, Heidelberg, Germany — ³RIKEN, Wako-shi, Japan — ⁴CERN, 1211 Geneva, Switzerland — ⁵University of Tokyo, Japan — ⁶GSI, Darmstadt, Germany — ⁷Leibniz Universität Hannover, Germany — ⁸PTB, Braunschweig, Germany — ⁹Helmholtz-Institut Mainz, Germany

STEP, "Symmetry Tests in Experiments with Portable Antiprotons", is an addition to the BASE experiment. To enable antiproton measurements with improved precision, future measurements need to be conducted outside of the "Antiproton Decelerator" hall to circumvent limitations by magnetic field fluctuations. For this, we designed a transportable cryostat, a pulse-tube cooler and liquid helium tank to cool a Penning trap system down to 4K during transportation and periods were no power is available. Also a permanent magnet system will be used as an alternative approach to using a superconducting magnet to trap the particles. I will present and characterize the set-up of the transportable cryostat and the permanent magnet system.