Wursten, E.; RIKEN, Ulmer Fundamental Symmetries Laboratory, Saitama, JAPAN
Abbas, F.; Institut für Physik, Johannes Gutenberg-Universität, Mainz, GERMANY
Wiesinger, M.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Will, C.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Yildiz, H.; Institut für Physik, Johannes Gutenberg-Universität, Mainz, GERMANY
Blaum, Klaus; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Matsuda, Y.; Graduate School of Arts and Sciences, University of Tokyo, Tokyo, JAPAN
Mooser, A.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Ospelkaus, Christian; QUEST Institute for Experimental Quantum Metrology, PTB-Braunschweig; Leibniz Universität, Institut für Quantenoptik, Hannover, GERMANY
Smorra, C.; RIKEN, Ulmer Fundamental Symmetries Laboratory, Saitama, JAPAN; Institut für Physik, Johannes Gutenberg-Universität, Mainz, GERMANY
Sótér, A.; Graduate School of Arts and Sciences, University of Tokyo, Tokyo, JAPAN
Quint, W.; GSI-Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GERMANY
Walz, J.; GSI-Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GERMANY; Helmholtz-Institut Mainz, Johannes Gutenberg-Universität, Mainz, GERMANY
Yamazaki, Y; RIKEN, Ulmer Fundamental Symmetries Laboratory, Saitama, JAPAN
We present the design and characterization of a cryogenic window based on an ultra-thin aluminized biaxially oriented polyethylene terephthalate foil at T < 10 K, which can withstand a pressure difference larger than 1 bar at a leak rate mbar l/s. Its thickness of ˜1.7 μm makes it transparent to various types of particles over a broad energy range. To optimize the transfer of 100 keV antiprotons through the window, we tested the degrading properties of different aluminum coated polymer foils of thicknesses between 900 and 2160 nm, concluding that 1760 nm foil decelerates antiprotons to an average energy of 5 keV. We have also explicitly studied the permeation as a function of coating thickness and temperature and have performed extensive thermal and mechanical endurance and stress tests. Our final design integrated into the experiment has an effective open surface consisting of seven holes with a diameter of 1 mm and will transmit up to 2.5% of the injected 100 keV antiproton beam delivered by the Antiproton Decelerator and Extra Low ENergy Antiproton ring facility of CERN.
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Themenbereich der Metrologie
Zeit und Frequenz
Innovationscluster
Quantentechnologie
Geschäftsfelder
Grundlagen der Metrologie
Zitierung
Latacz, B. M., Arndt, B. P., Devlin, J. A., Erlewein, S. R., Fleck, M., Jäger, J. I., Micke, P., Umbrazunas, G., Wursten, E., Abbas, F., Wiesinger, M., Will, C., Yildiz, H., Blaum, K., Matsuda, Y., Mooser, A., Ospelkaus, C., Smorra, C., Sótér, A., Quint, W., Walz, J., Yamazaki, Y., & Ulmer, S. (2023). Ultra-thin polymer foil cryogenic window for antiproton deceleration and storage. Review of Scientific Instruments, 94(10), 103310-1–103310-11. https://doi.org/10.1063/5.0167262
