Ultra-thin polymer foil cryogenic window for antiproton deceleration and storage

authored by: B. M. Latacz, B. P. Arndt, J. A. Devlin, S. R. Erlewein, M. Fleck, J. I. Jäger, P. Micke, G. Umbrazunas, E. Wursten, F. Abbass, D. Schweitzer, M. Wiesinger, C. Will, H. Yildiz, K. Blaum, Y. Matsuda, A. Mooser, C. Ospelkaus, C. Smorra, A. Sótér, W. Quint, J. Walz, Y. Yamazaki, S. Ulmer
Abstract: 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 < 1 × 1 0 − 9 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.
Organisation(s): Institute of Quantum Optics
QuantumFrontiers
External Organisation(s): CERN
Ulmer Fundamental Symmetries Laboratory
Max Planck Institute for Nuclear Physics
GSI Helmholtz Centre for Heavy Ion Research
University of Tokyo
ETH Zurich
Johannes Gutenberg University Mainz
National Metrology Institute of Germany (PTB)
Heinrich-Heine-Universität Düsseldorf
Type: Article
Journal: Review of scientific instruments
Volume: 94
No. of pages: 12
ISSN: 0034-6748
Publication date: 10.2023
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Instrumentation
Electronic version(s): https://doi.org/10.48550/arXiv.2308.1287 (Access: Open)
https://doi.org/10.1063/5.0167262 (Access: Open)

BibTeX

@article{a746c6339eac4e0a9a8c861af97863a6,
title = "Ultra-thin polymer foil cryogenic window for antiproton deceleration and storage",
abstract = "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 < 1 × 1 0 − 9 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.",
author = "Latacz, {B. M.} and Arndt, {B. P.} and Devlin, {J. A.} and Erlewein, {S. R.} and M. Fleck and J{\"a}ger, {J. I.} and P. Micke and G. Umbrazunas and E. Wursten and F. Abbass and D. Schweitzer and M. Wiesinger and C. Will and H. Yildiz and K. Blaum and Y. Matsuda and A. Mooser and C. Ospelkaus and C. Smorra and A. S{\'o}t{\'e}r and W. Quint and J. Walz and Y. Yamazaki and S. Ulmer",
note = "Funding Information: We acknowledge financial support by RIKEN, the Max-Planck Society, CERN, the European Union (FunI-832848, STEP-852818), CRC 1227 “DQ-mat” (DFG 274200144), the Cluster of Excellence “Quantum Frontiers” (DFG 390837967), the Wolfgang Gentner Program (Grant No. 13E18CHA), IMPRS-QD, and the Helmholtz-Gemeinschaft. This work was supported by the Max-Planck, RIKEN, PTB-Center for Time, Constants, and Fundamental Symmetries (C-TCFS). ",
year = "2023",
month = oct,
doi = "10.48550/arXiv.2308.1287",
language = "English",
volume = "94",
journal = "Review of scientific instruments",
issn = "0034-6748",
publisher = "American Institute of Physics",
number = "10",
}