SRF2023 - List of Authors (Huque, N.A.)

Paper	Title	Page
MOIXA03	Proton Power Upgrade Project Progress and Plans at the Spallation Neutron Source in Oak Ridge Tennessee	25
	J.D. Mammosser, M.J. Dayton, D.D. Kraft, R. Maekawa, L. Pinion, B.E. Robertson ORNL RAD, Oak Ridge, Tennessee, USA R. Afanador, D.L. Barnhart, M.S. Champion, B. DeGraff, M. Doleans, J. Galambos, S.W. Gold, M.N. Greenwood, G.A. Hine, M.P. Howell, S.-H. Kim, C.J. McMahan, P. Pizzol, S.E. Stewart, D.J. Vandygriff, D.M. Vandygriff ORNL, Oak Ridge, Tennessee, USA A. Bitter, K.B. Bolz, A. Navitski, L. Zweibäumer RI Research Instruments GmbH, Bergisch Gladbach, Germany E.F. Daly, G.K. Davis, P. Dhakal, J.F. Fischer, D. Forehand, N.A. Huque, K.M. Wilson JLab, Newport News, Virginia, USA
	Funding: Work Supported by UT-Battelle, LLC, under contract DE-AC05-00OR22725 The Proton Power Upgrade project is well underway at the Spallation Neutron Source (SNS) facility in Oak Ridge, Tennessee. This project aims at increasing the proton beam power capability from 1.4 to 2.8 MW, by adding linac energy, increasing the beam current and implementing target developments to handle the increased beam power. This talk will cover the current status of increasing the beam energy, issues encountered along the way, operational experience with the new SRF cryomodules and target improvements and results from operation with beam so far.
	Slides MOIXA03 [3.327 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-SRF2023-MOIXA03
About •	Received ※ 09 June 2023 — Revised ※ 25 June 2023 — Accepted ※ 29 June 2023 — Issue date ※ 08 July 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPTB046	Development and Performance of RFD Crab Cavity Prototypes for HL-LHC AUP	531
	L. Ristori, P. Berrutti, M. Narduzzi Fermilab, Batavia, Illinois, USA A. Castilla JLAB, Newport News, USA S.U. De Silva, J.R. Delayen ODU, Norfolk, Virginia, USA N.A. Huque JLab, Newport News, Virginia, USA Z. Li, A. Ratti SLAC, Menlo Park, California, USA
	Funding: Operated by Fermi Research Alliance, LLC, under Contract DE-AC02-07CH11359 with the U.S. DOE The US will be contributing to the HL-LHC upgrade at CERN with the fabrication and qualification of RFD crabbing cavities in the framework of the HL-LHC Accelerator Upgrade Project (AUP) managed by Fermilab. AUP received Critical Decision 3 (CD-3) approval by DOE in December 2020 launching the project into the production phase. The electro-magnetic design of the cavity was inherited from the LHC Accelerator Research Program (LARP) but needed to be revised to meet new project requirements and to prevent issues encountered during beam tests performed at CERN in the R&D phase. Two prototype cavities were manufactured in industry and cold tested. Challenges specific to the RFD cavity were the stringent interface tolerances, the pole symmetry and the higher-order-mode impedance spectrum. Chemical processing and heat treatments were performed initially at FNAL/ANL and are now being transferred to industry for the production phase. HOM dampers are manufactured and validated by JLAB. A summary of cold test results with and without HOM dampers is presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-SRF2023-TUPTB046
About •	Received ※ 20 June 2023 — Revised ※ 24 June 2023 — Accepted ※ 27 June 2023 — Issue date ※ 11 July 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPWB051	Development of a Prototype 197 MHz Crab Cavity for the Electron-Ion Collider at JLab	685
	N.A. Huque, E.F. Daly, E. Drachuk, J. Henry, M. Marchlik JLab, Newport News, Virginia, USA A. Castilla JLAB, Newport News, USA S.U. De Silva ODU, Norfolk, Virginia, USA B.P. Xiao BNL, Upton, New York, USA
	Thomas Jefferson National Accelerator Facility (JLab) is currently developing a prototype 197 MHz Radio-Frequency Dipole (RFD) crab cavity as part of the Electron-Ion Collider (EIC) to be built at Brookhaven National Laboratory (BNL). Cryomodules containing these cavities will be part of Hadron Storage Ring (HSR) of the EIC. The prototype cavity is constructed primarily of formed niobium sheets of thickness 4.17 mm, with machined niobium parts used as interfaces where tight tolerancing is required. The cavity¿s large size and complex features present a number of challenges in fabrication, tuning, and RF testing. Structural and forming analyses have been carried out to optimize the design and fabricated processes. An overview of the design phase and the current state of fabrication are presented in this paper. Work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract DE-AC05-06OR23177
DOI •	reference for this paper ※ doi:10.18429/JACoW-SRF2023-WEPWB051
About •	Received ※ 17 June 2023 — Revised ※ 25 June 2023 — Accepted ※ 26 June 2023 — Issue date ※ 16 July 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Proton Power Upgrade Project Progress and Plans at the Spallation Neutron Source in Oak Ridge Tennessee

25

J.D. Mammosser, M.J. Dayton, D.D. Kraft, R. Maekawa, L. Pinion, B.E. Robertson
ORNL RAD, Oak Ridge, Tennessee, USA
R. Afanador, D.L. Barnhart, M.S. Champion, B. DeGraff, M. Doleans, J. Galambos, S.W. Gold, M.N. Greenwood, G.A. Hine, M.P. Howell, S.-H. Kim, C.J. McMahan, P. Pizzol, S.E. Stewart, D.J. Vandygriff, D.M. Vandygriff
ORNL, Oak Ridge, Tennessee, USA
A. Bitter, K.B. Bolz, A. Navitski, L. Zweibäumer
RI Research Instruments GmbH, Bergisch Gladbach, Germany
E.F. Daly, G.K. Davis, P. Dhakal, J.F. Fischer, D. Forehand, N.A. Huque, K.M. Wilson
JLab, Newport News, Virginia, USA

Funding: Work Supported by UT-Battelle, LLC, under contract DE-AC05-00OR22725
The Proton Power Upgrade project is well underway at the Spallation Neutron Source (SNS) facility in Oak Ridge, Tennessee. This project aims at increasing the proton beam power capability from 1.4 to 2.8 MW, by adding linac energy, increasing the beam current and implementing target developments to handle the increased beam power. This talk will cover the current status of increasing the beam energy, issues encountered along the way, operational experience with the new SRF cryomodules and target improvements and results from operation with beam so far.

Slides MOIXA03 [3.327 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-SRF2023-MOIXA03

About •

Received ※ 09 June 2023 — Revised ※ 25 June 2023 — Accepted ※ 29 June 2023 — Issue date ※ 08 July 2023

Cite •

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

TUPTB046

Development and Performance of RFD Crab Cavity Prototypes for HL-LHC AUP

531

L. Ristori, P. Berrutti, M. Narduzzi
Fermilab, Batavia, Illinois, USA
A. Castilla
JLAB, Newport News, USA
S.U. De Silva, J.R. Delayen
ODU, Norfolk, Virginia, USA
N.A. Huque
JLab, Newport News, Virginia, USA
Z. Li, A. Ratti
SLAC, Menlo Park, California, USA

Funding: Operated by Fermi Research Alliance, LLC, under Contract DE-AC02-07CH11359 with the U.S. DOE
The US will be contributing to the HL-LHC upgrade at CERN with the fabrication and qualification of RFD crabbing cavities in the framework of the HL-LHC Accelerator Upgrade Project (AUP) managed by Fermilab. AUP received Critical Decision 3 (CD-3) approval by DOE in December 2020 launching the project into the production phase. The electro-magnetic design of the cavity was inherited from the LHC Accelerator Research Program (LARP) but needed to be revised to meet new project requirements and to prevent issues encountered during beam tests performed at CERN in the R&D phase. Two prototype cavities were manufactured in industry and cold tested. Challenges specific to the RFD cavity were the stringent interface tolerances, the pole symmetry and the higher-order-mode impedance spectrum. Chemical processing and heat treatments were performed initially at FNAL/ANL and are now being transferred to industry for the production phase. HOM dampers are manufactured and validated by JLAB. A summary of cold test results with and without HOM dampers is presented.

DOI •

reference for this paper ※ doi:10.18429/JACoW-SRF2023-TUPTB046

About •

Received ※ 20 June 2023 — Revised ※ 24 June 2023 — Accepted ※ 27 June 2023 — Issue date ※ 11 July 2023

Cite •

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

WEPWB051

Development of a Prototype 197 MHz Crab Cavity for the Electron-Ion Collider at JLab

685

N.A. Huque, E.F. Daly, E. Drachuk, J. Henry, M. Marchlik
JLab, Newport News, Virginia, USA
A. Castilla
JLAB, Newport News, USA
S.U. De Silva
ODU, Norfolk, Virginia, USA
B.P. Xiao
BNL, Upton, New York, USA

Thomas Jefferson National Accelerator Facility (JLab) is currently developing a prototype 197 MHz Radio-Frequency Dipole (RFD) crab cavity as part of the Electron-Ion Collider (EIC) to be built at Brookhaven National Laboratory (BNL). Cryomodules containing these cavities will be part of Hadron Storage Ring (HSR) of the EIC. The prototype cavity is constructed primarily of formed niobium sheets of thickness 4.17 mm, with machined niobium parts used as interfaces where tight tolerancing is required. The cavity¿s large size and complex features present a number of challenges in fabrication, tuning, and RF testing. Structural and forming analyses have been carried out to optimize the design and fabricated processes. An overview of the design phase and the current state of fabrication are presented in this paper.
Work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract DE-AC05-06OR23177

DOI •

reference for this paper ※ doi:10.18429/JACoW-SRF2023-WEPWB051

About •

Received ※ 17 June 2023 — Revised ※ 25 June 2023 — Accepted ※ 26 June 2023 — Issue date ※ 16 July 2023

Cite •

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