LINAC2022 - List of Authors (Shpani, L.)

Paper	Title	Page
TU1AA06	Next-Generation Nb₃Sn Superconducting RF Cavities	305
SUPCJO08	use link to see paper's listing under its alternate paper code
	N.M. Verboncoeur, G. Gaitan, M. Liepe, R.D. Porter, L. Shpani, N.A. Stilin, Z. Sun Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
	Nb₃Sn currently is the most promising alternative material for next-generation, higher-performance SRF cavities. Significant recent progress has been made in further increasing efficiency, maximum field, and demonstrating readiness for first applications in actual accelerators. This paper will present an overview of worldwide recent progress in making this material a viable option for further accelerators.
	Slides TU1AA06 [6.559 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TU1AA06
About •	Received ※ 31 August 2022 — Revised ※ 01 September 2022 — Accepted ※ 04 September 2022 — Issue date ※ 09 September 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOGE15	Measuring the Seebeck Coefficient at Cryogenic Temperatures for LCLS-II-HE Project	825
SUPCPA01	use link to see paper's listing under its alternate paper code
	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
	Funding: This work is supported by the DOE LCLS-II HE Project. 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.
	Poster THPOGE15 [0.959 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-THPOGE15
About •	Received ※ 27 August 2022 — Revised ※ 04 September 2022 — Accepted ※ 26 September 2022 — Issue date ※ 29 September 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

TU1AA06

Next-Generation Nb₃Sn Superconducting RF Cavities

305

SUPCJO08

use link to see paper's listing under its alternate paper code

N.M. Verboncoeur, G. Gaitan, M. Liepe, R.D. Porter, L. Shpani, N.A. Stilin, Z. Sun
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA

Nb₃Sn currently is the most promising alternative material for next-generation, higher-performance SRF cavities. Significant recent progress has been made in further increasing efficiency, maximum field, and demonstrating readiness for first applications in actual accelerators. This paper will present an overview of worldwide recent progress in making this material a viable option for further accelerators.

Slides TU1AA06 [6.559 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TU1AA06

About •

Received ※ 31 August 2022 — Revised ※ 01 September 2022 — Accepted ※ 04 September 2022 — Issue date ※ 09 September 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOGE15

Measuring the Seebeck Coefficient at Cryogenic Temperatures for LCLS-II-HE Project

825

SUPCPA01

use link to see paper's listing under its alternate paper code

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

Funding: This work is supported by the DOE LCLS-II HE Project.
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.

Poster THPOGE15 [0.959 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-THPOGE15

About •

Received ※ 27 August 2022 — Revised ※ 04 September 2022 — Accepted ※ 26 September 2022 — Issue date ※ 29 September 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)