NAPAC2022 - List of Authors (Lin, F.)

Paper	Title	Page
MOZD5	ERL-Based Compact X-Ray FEL	37
	F. Lin, V.S. Morozov ORNL RAD, Oak Ridge, Tennessee, USA J. Guo, Y. Zhang JLab, Newport News, Virginia, USA
	Funding: Work supported by UT-Battelle, LLC, under contract DE-AC05-00OR22725, and by Jefferson Science Associates, LLC, under contract DE-AC05-06OR23177 We propose to develop an energy-recovery-linac (ERL)-based X-ray free-electron laser (XFEL). Taking advantage of the demonstrated high-efficiency energy recovery of the beam power in the ERL, the proposed concept offers the following benefits: i) recirculating the electron beam through high-gradient superconducting RF (SRF) cavities shortens the linac, ii) energy recovery in the SRF linac saves the klystron power and reduces the beam dump power, iii) the high average beam power produces a high average photon brightness. In addition, such a concept has the capability of delivering optimized high-brightness CW X-ray FEL performance at different energies with simultaneous multipole sources. In this paper, we will present the preliminary results on the study of feasibility, optics design and parameter optimization of such a device.
	Slides MOZD5 [2.870 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-MOZD5
About •	Received ※ 02 August 2022 — Revised ※ 04 August 2022 — Accepted ※ 04 August 2022 — Issue date ※ 11 September 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPA36	Emittance Growth Due to RF Phase Noise in Crab Cavities	708
	H. Huang, S. Zhao ODU, Norfolk, Virginia, USA F. Lin, V.S. Morozov ORNL RAD, Oak Ridge, Tennessee, USA Y. Luo Brookhaven National Laboratory (BNL), Electron-Ion Collider, Upton, New York, USA T. Satogata, Y. Zhang JLab, Newport News, Virginia, USA B.P. Xiao, D. Xu BNL, Upton, New York, USA
	The Electron-Ion Collider (EIC) incorporates beam crabbing to recover geometric luminosity loss from the nonzero crossing angle at the interaction point (IP). It is well-known that crab cavity imperfections can cause growth of colliding beam emittances, thus degrading collider performance. Here we report a particle tracking study to quantify these effects. Presently the study is focused on crab cavity RF phase noise. Simulations were carried out using Bmad. Dependence of emittance growth on phase noise level was obtained which could be used for developing crab cavity phase control specifications. We also benchmarked these simulations with theory.
DOI •	reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEPA36
About •	Received ※ 02 August 2022 — Revised ※ 07 August 2022 — Accepted ※ 12 August 2022 — Issue date ※ 02 September 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

ERL-Based Compact X-Ray FEL

37

F. Lin, V.S. Morozov
ORNL RAD, Oak Ridge, Tennessee, USA
J. Guo, Y. Zhang
JLab, Newport News, Virginia, USA

Funding: Work supported by UT-Battelle, LLC, under contract DE-AC05-00OR22725, and by Jefferson Science Associates, LLC, under contract DE-AC05-06OR23177
We propose to develop an energy-recovery-linac (ERL)-based X-ray free-electron laser (XFEL). Taking advantage of the demonstrated high-efficiency energy recovery of the beam power in the ERL, the proposed concept offers the following benefits: i) recirculating the electron beam through high-gradient superconducting RF (SRF) cavities shortens the linac, ii) energy recovery in the SRF linac saves the klystron power and reduces the beam dump power, iii) the high average beam power produces a high average photon brightness. In addition, such a concept has the capability of delivering optimized high-brightness CW X-ray FEL performance at different energies with simultaneous multipole sources. In this paper, we will present the preliminary results on the study of feasibility, optics design and parameter optimization of such a device.

Slides MOZD5 [2.870 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-MOZD5

About •

Received ※ 02 August 2022 — Revised ※ 04 August 2022 — Accepted ※ 04 August 2022 — Issue date ※ 11 September 2022

Cite •

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

WEPA36

Emittance Growth Due to RF Phase Noise in Crab Cavities

708

H. Huang, S. Zhao
ODU, Norfolk, Virginia, USA
F. Lin, V.S. Morozov
ORNL RAD, Oak Ridge, Tennessee, USA
Y. Luo
Brookhaven National Laboratory (BNL), Electron-Ion Collider, Upton, New York, USA
T. Satogata, Y. Zhang
JLab, Newport News, Virginia, USA
B.P. Xiao, D. Xu
BNL, Upton, New York, USA

The Electron-Ion Collider (EIC) incorporates beam crabbing to recover geometric luminosity loss from the nonzero crossing angle at the interaction point (IP). It is well-known that crab cavity imperfections can cause growth of colliding beam emittances, thus degrading collider performance. Here we report a particle tracking study to quantify these effects. Presently the study is focused on crab cavity RF phase noise. Simulations were carried out using Bmad. Dependence of emittance growth on phase noise level was obtained which could be used for developing crab cavity phase control specifications. We also benchmarked these simulations with theory.

DOI •

reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEPA36

About •

Received ※ 02 August 2022 — Revised ※ 07 August 2022 — Accepted ※ 12 August 2022 — Issue date ※ 02 September 2022

Cite •

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