| Title |
Measuring the Seebeck Coefficient at Cryogenic Temperatures for LCLS-II-HE Project |
| Authors |
- L. Shpani, M. Ge, A.T. Holic, M. Liepe, J. Sears, N.M. Verboncoeur
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
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| Abstract |
The Seebeck effect plays a crucial role during the cooldown procedure in SRF based accelerators, like LCLS-II at SLAC. The temperature-dependent Seebeck coefficient quantitatively measures the strength of electric potential induced by thermal gradients in metals. This effect is present in cryomodules and drives thermoelectric currents generating magnetic fields. These fields can get trapped in cavities and cause additional dissipation in RF fields. We have therefore designed and commissioned an experimental setup that does continuous measurements of the Seebeck coefficient for cryogenic temperatures ranging from 200K down to below 10K. We present results of the measurements of this coefficient for materials commonly used in cryomodules, such as niobium, titanium, niobium-titanium, silicon bronze, and stainless steel.
|
| Funding |
This work is supported by the DOE LCLS-II HE Project. |
| Paper |
download THPOGE15.PDF [20.475 MB / 3 pages] |
| Poster |
download THPOGE15_POSTER.PDF [0.959 MB] |
| Cite |
download ※ BibTeX
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※ EndNote |
| Conference |
LINAC2022 |
| Series |
International Linear Accelerator Conference (31st) |
| Location |
Liverpool, UK |
| Date |
28 August-02 September 2022 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Peter McIntosh (STFC DL, Daresbury, UK); Graeme Burt (Lancaster Univ., Lancaster, UK); Robert Apsimon (Lancaster Univ., Lancaster, UK); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
| Online ISBN |
978-3-95450-215-8 |
| Online ISSN |
2226-0366 |
| Received |
27 August 2022 |
| Revised |
04 September 2022 |
| Accepted |
26 September 2022 |
| Issue Date |
29 September 2022 |
| DOI |
doi:10.18429/JACoW-LINAC2022-THPOGE15 |
| Pages |
825-827 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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