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Outgassing rate testbed for in-operation analysis of powered and heated assemblies

Warner, Marvin and Elsen, Michael and Wörner, Lisa and Braxmaier, Claus and Grosse, Jens (2022) Outgassing rate testbed for in-operation analysis of powered and heated assemblies. Journal of Vacuum Science and Technology B, 40 (4), 044203. American Institute of Physics (AIP). doi: 10.1116/6.0001898. ISSN 2166-2746.

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Official URL: https://avs.scitation.org/doi/10.1116/6.0001898


We introduce a new apparatus for measuring the outgassing rate of assemblies and functional units. Outgassing rates given in the literature, if available, are mostly insufficient to plan and set up a vacuum system, more so if commercial parts, preassembled items, or complex electronics with unknown components are deployed. Outgassing rates have a severe impact on the required pumping speed in ultrahigh vacuum systems and they change if the samples are powered or heated. The newly built apparatus uses the throughput method to measure outgassing rates. It can house probes with a size of 0.10x0.10x0.13m^3 and supplies electrical currents of up to 5 A. In addition, a heater can establish temperatures of up to 200 °C directly. A procedure is given to identify the main gas inputs and to retrieve data with a lower limit of 1.5x10^(-8) Pa m^3 s^(-1) after 100 h in vacuum. In this paper, we present the experimental setup and first results for samples of polytetrafluorethylene, polyamide (PA6), Viton (1A), and oxygen-free high thermal conductivity copper at room temperature.

Item URL in elib:https://elib.dlr.de/188073/
Document Type:Article
Additional Information:This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Vac. Sci. Technol. B 40, 044203 (2022) and may be found at https://avs.scitation.org/doi/10.1116/6.0001898
Title:Outgassing rate testbed for in-operation analysis of powered and heated assemblies
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wörner, LisaUNSPECIFIEDhttps://orcid.org/0000-0002-8808-5891UNSPECIFIED
Date:13 July 2022
Journal or Publication Title:Journal of Vacuum Science and Technology B
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:044203
Publisher:American Institute of Physics (AIP)
Keywords:Outgassing rates, ultra-high vacuum, quantum technology
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - Quantum metrology, R - Quantum engineering
Location: Bremen , Ulm
Institutes and Institutions:Institute of Quantum Technologies > Quantum Metrology
Institute of Quantum Technologies > Quantum Engineering
Deposited By: Hamann, Ines
Deposited On:10 Sep 2022 22:47
Last Modified:28 Nov 2023 07:27

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