DEVELOPMENT OF WET NITROGEN DOPING TO IMPROVE THE PERFORMANCE OF HALF-WAVE RESONATORS

Yuting Wu; Andrei Ganshyn; Chris Compton; Ethan Metzgar; Kenji Saito; Kyle Elliott; Laura Popielarski; Sang Hoon Kim; Spencer Combs; Taro Konomi; Ting Xu; Walter Hartung; Wei Chang; Yoolim Cheon

doi:10.18429/JACoW-LINAC2024-TUAA002

DEVELOPMENT OF WET NITROGEN DOPING TO IMPROVE THE PERFORMANCE OF HALF-WAVE RESONATORS

Yuting Wu, Andrei Ganshyn, Chris Compton, Ethan Metzgar, Kenji Saito, Kyle Elliott, Laura Popielarski, Sang Hoon Kim, Spencer Combs, Taro Konomi, Ting Xu, Walter Hartung, Wei Chang, Yoolim Cheon

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A new surface treatment method is being developed, wet nitrogen doping, in which nitric acid is added during electropolishing (EP). In the first trial on a FRIB β = 0.53 half-wave resonator (HWR), a high quality factor (Q₀ = 8 × 10¹⁰) was observed at 2 K at low field (accelerating gradient ≤ 0.5 MV/m) without an anti-Q slope. It is known that the Q₀ can be increased by shortening the mean free path via surface contamination by oxygen. Low-temperature baking (LTB) can allow oxygen to diffuse into the surface to a depth similar to the RF penetration depth. However, nitrogen cannot diffuse via LTB. Therefore, the mechanism for increasing Q₀ with N-doping has not been clearly understood. First results and analyses for HWR wet N-doping will be presented.

Original language	English
Title of host publication	Proceedings of the 32nd Linear Accelerator Conference, LINAC 2024
Editors	Kelly Jaje
Publisher	JACoW Publishing
Pages	287-290
Number of pages	4
ISBN (Electronic)	9783954502196
DOIs	https://doi.org/10.18429/JACoW-LINAC2024-TUAA002
State	Published - 2024
Externally published	Yes
Event	32nd Linear Accelerator Conference, LINAC 2024 - Chicago, United States Duration: Aug 25 2024 → Aug 30 2024

Publication series

Name	Proceedings - Linear Accelerator Conference, LINAC
ISSN (Print)	2226-0366

Conference

Conference	32nd Linear Accelerator Conference, LINAC 2024
Country/Territory	United States
City	Chicago
Period	08/25/24 → 08/30/24

Funding

Work supported by the U.S. Department of Energy, Office of Science, DE-S RC114424

Access to Document

10.18429/JACoW-LINAC2024-TUAA002

Cite this

Wu, Y., Ganshyn, A., Compton, C., Metzgar, E., Saito, K., Elliott, K., Popielarski, L., Kim, S. H., Combs, S., Konomi, T., Xu, T., Hartung, W., Chang, W., & Cheon, Y. (2024). DEVELOPMENT OF WET NITROGEN DOPING TO IMPROVE THE PERFORMANCE OF HALF-WAVE RESONATORS. In K. Jaje (Ed.), Proceedings of the 32nd Linear Accelerator Conference, LINAC 2024 (pp. 287-290). (Proceedings - Linear Accelerator Conference, LINAC). JACoW Publishing. https://doi.org/10.18429/JACoW-LINAC2024-TUAA002

@inproceedings{fd3b2f08add148aab9349f45a86e6e05,

title = "DEVELOPMENT OF WET NITROGEN DOPING TO IMPROVE THE PERFORMANCE OF HALF-WAVE RESONATORS",

abstract = "A new surface treatment method is being developed, wet nitrogen doping, in which nitric acid is added during electropolishing (EP). In the first trial on a FRIB β = 0.53 half-wave resonator (HWR), a high quality factor (Q0 = 8 × 1010) was observed at 2 K at low field (accelerating gradient ≤ 0.5 MV/m) without an anti-Q slope. It is known that the Q0 can be increased by shortening the mean free path via surface contamination by oxygen. Low-temperature baking (LTB) can allow oxygen to diffuse into the surface to a depth similar to the RF penetration depth. However, nitrogen cannot diffuse via LTB. Therefore, the mechanism for increasing Q0 with N-doping has not been clearly understood. First results and analyses for HWR wet N-doping will be presented.",

author = "Yuting Wu and Andrei Ganshyn and Chris Compton and Ethan Metzgar and Kenji Saito and Kyle Elliott and Laura Popielarski and Kim, {Sang Hoon} and Spencer Combs and Taro Konomi and Ting Xu and Walter Hartung and Wei Chang and Yoolim Cheon",

note = "Publisher Copyright: Content from this work may be used under the terms of the CC BY 4.0 licence ({\textcopyright} 2024).; 32nd Linear Accelerator Conference, LINAC 2024 ; Conference date: 25-08-2024 Through 30-08-2024",

year = "2024",

doi = "10.18429/JACoW-LINAC2024-TUAA002",

language = "English",

series = "Proceedings - Linear Accelerator Conference, LINAC",

publisher = "JACoW Publishing",

pages = "287--290",

editor = "Kelly Jaje",

booktitle = "Proceedings of the 32nd Linear Accelerator Conference, LINAC 2024",

}

Wu, Y, Ganshyn, A, Compton, C, Metzgar, E, Saito, K, Elliott, K, Popielarski, L, Kim, SH, Combs, S, Konomi, T, Xu, T, Hartung, W, Chang, W & Cheon, Y 2024, DEVELOPMENT OF WET NITROGEN DOPING TO IMPROVE THE PERFORMANCE OF HALF-WAVE RESONATORS. in K Jaje (ed.), Proceedings of the 32nd Linear Accelerator Conference, LINAC 2024. Proceedings - Linear Accelerator Conference, LINAC, JACoW Publishing, pp. 287-290, 32nd Linear Accelerator Conference, LINAC 2024, Chicago, United States, 08/25/24. https://doi.org/10.18429/JACoW-LINAC2024-TUAA002

DEVELOPMENT OF WET NITROGEN DOPING TO IMPROVE THE PERFORMANCE OF HALF-WAVE RESONATORS. / Wu, Yuting; Ganshyn, Andrei; Compton, Chris et al.
Proceedings of the 32nd Linear Accelerator Conference, LINAC 2024. ed. / Kelly Jaje. JACoW Publishing, 2024. p. 287-290 (Proceedings - Linear Accelerator Conference, LINAC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - DEVELOPMENT OF WET NITROGEN DOPING TO IMPROVE THE PERFORMANCE OF HALF-WAVE RESONATORS

AU - Wu, Yuting

AU - Ganshyn, Andrei

AU - Compton, Chris

AU - Metzgar, Ethan

AU - Saito, Kenji

AU - Elliott, Kyle

AU - Popielarski, Laura

AU - Kim, Sang Hoon

AU - Combs, Spencer

AU - Konomi, Taro

AU - Xu, Ting

AU - Hartung, Walter

AU - Chang, Wei

AU - Cheon, Yoolim

PY - 2024

Y1 - 2024

N2 - A new surface treatment method is being developed, wet nitrogen doping, in which nitric acid is added during electropolishing (EP). In the first trial on a FRIB β = 0.53 half-wave resonator (HWR), a high quality factor (Q0 = 8 × 1010) was observed at 2 K at low field (accelerating gradient ≤ 0.5 MV/m) without an anti-Q slope. It is known that the Q0 can be increased by shortening the mean free path via surface contamination by oxygen. Low-temperature baking (LTB) can allow oxygen to diffuse into the surface to a depth similar to the RF penetration depth. However, nitrogen cannot diffuse via LTB. Therefore, the mechanism for increasing Q0 with N-doping has not been clearly understood. First results and analyses for HWR wet N-doping will be presented.

AB - A new surface treatment method is being developed, wet nitrogen doping, in which nitric acid is added during electropolishing (EP). In the first trial on a FRIB β = 0.53 half-wave resonator (HWR), a high quality factor (Q0 = 8 × 1010) was observed at 2 K at low field (accelerating gradient ≤ 0.5 MV/m) without an anti-Q slope. It is known that the Q0 can be increased by shortening the mean free path via surface contamination by oxygen. Low-temperature baking (LTB) can allow oxygen to diffuse into the surface to a depth similar to the RF penetration depth. However, nitrogen cannot diffuse via LTB. Therefore, the mechanism for increasing Q0 with N-doping has not been clearly understood. First results and analyses for HWR wet N-doping will be presented.

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U2 - 10.18429/JACoW-LINAC2024-TUAA002

DO - 10.18429/JACoW-LINAC2024-TUAA002

M3 - Conference contribution

AN - SCOPUS:85212841376

T3 - Proceedings - Linear Accelerator Conference, LINAC

SP - 287

EP - 290

BT - Proceedings of the 32nd Linear Accelerator Conference, LINAC 2024

A2 - Jaje, Kelly

PB - JACoW Publishing

T2 - 32nd Linear Accelerator Conference, LINAC 2024

Y2 - 25 August 2024 through 30 August 2024

ER -

DEVELOPMENT OF WET NITROGEN DOPING TO IMPROVE THE PERFORMANCE OF HALF-WAVE RESONATORS

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