MOIXA —  Facility II   (26-Jun-23   10:50—12:50)
Paper Title Page
MOIXA01
Status of SRF Activities for SHINE  
 
  • J.F. Chen
    SARI-CAS, Pudong, Shanghai, People’s Republic of China
 
  Funding: Project supported by Shanghai Municipal Science and Technology Major Project (Grant No.2017SHZDZX02)
The Shanghai High repetition rate XFEL and Extreme light facility (SHINE) is an ongoing project in China, which needs 610 1.3 GHz ILC type cavities, and also use 16 3.9 GHz third harmonics cavities. We will build 77 superconducting cryomodules used for beam acceleration. In this talk, status, achievements, difficulties encountered and solutions implemented, path forward, and activities related to this project should be presented.
 
slides icon Slides MOIXA01 [4.055 MB]  
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MOIXA02 PIP-II Project Overview and Status 19
 
  • R.P. Stanek, C. Boffo, S.K. Chandrasekaran, S.J. Dixon, E.R. Harms, L. Kokoska, I. Kourbanis, J.R. Leibfritz, O. Napoly, D. Passarelli, E. Pozdeyev, A.M. Rowe
    Fermilab, Batavia, Illinois, USA
 
  Funding: Prepared by PIP-II Project using resources of the Fermi National Accelerator Laboratory, a U.S. DOE facility, managed by Fermi Research Alliance, LLC, acting under Contract No. DE-AC02-07CH11359.
The Proton Improvement Plan II (PIP-II) project is an essential upgrade to Fermilab’s particle accelerator complex to enable the world’s most intense neutrino beam for LBNF/DUNE and a broad particle physics program for many decades to come. PIP-II will deliver 1.2 MW of proton beam power from the Main Injector, upgradeable to multi-MW capability. The central element of PIP-II is an 800 MeV superconducting radio frequency (SRF) linac, which comprises a room temperature front end followed by an SRF section. The SRF section consists of five different flavors of cavities/cryomodules, including Half Wave Resonators (HWR), Single Spoke and elliptical resonators operating at, or above, state-of-the-art parameters. The first two PIP-II cryomodules, Half Wave Resonator (HWR) and Single Spoke Resonator 1 (SSR1) were installed in the PIP-II Injector Test facility (PIP2IT) and have accelerated beam to above 17 MeV. PIP-II is the first U.S. accelerator project that will be constructed with significant contributions from international partners, including India, Italy, France, United Kingdom and Poland. The project was baselined in April 2022, and the construction phase is underway.
 
slides icon Slides MOIXA02 [3.353 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-SRF2023-MOIXA02  
About • Received ※ 07 June 2023 — Revised ※ 22 June 2023 — Accepted ※ 26 June 2023 — Issue date ※ 16 July 2023
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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 icon 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
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MOIXA04 Operational Experience for RIKEN Superconducting Linear Accelerator 30
 
  • K. Yamada, M. Fujimaki, H. Imao, O. Kamigaito, M. Komiyama, K. Kumagai, T. Nagatomo, T. Nishi, H. Okuno, K. Ozeki, N. Sakamoto, K. Suda, A. Uchiyama, T. Watanabe, Y. Watanabe
    RIKEN Nishina Center, Wako, Japan
 
  The RIKEN superconducting heavy-ion linac, so-called SRILAC, has been successfully operating for almost four years, and continuously deliver a heavy ion beam for a super-heavy-element synthesis experiment. The effects of a broken coupler in the early days and four years of operation have resulted in increased X-ray emission levels in several superconducting cavities, which have been successfully corrected by pulse conditioning. This talk will share the experiences and lessons learned from four-year operation with low beta SC-cavities.  
slides icon Slides MOIXA04 [4.517 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-SRF2023-MOIXA04  
About • Received ※ 06 July 2023 — Revised ※ 10 July 2023 — Accepted ※ 19 August 2023 — Issue date ※ 22 August 2023
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MOIXA05 Operating Experience of SRF System at High Beam Current in SuperKEKB 38
 
  • M. Nishiwaki, K. Akai, T. Furuya, S. Mitsunobu, Y. Morita, T. Okada
    KEK, Ibaraki, Japan
 
  SuperKEKB aims for high luminosity on the order of 1035 cm-2s-1 with beam currents of 2.6 A for electron and 3.6 A for positron to search new physics beyond the Standard Model in the B meson regime. In recent operations, we achieved a new record of luminosity of 4.65×1034 cm-2s-1 with 1.1 A for electron and 1.3 A for positron. The SRF system that was designed for KEKB, the predecessor of SuperKEKB, is operating stably with the high beam currents owing to the measures against the large beam powers and the large higher-order-mode (HOM) powers. As a measure against the large beam powers, our SRF cavities have increased a coupling of high-power input couplers during the KEKB operation. As a measure against the large HOM power, newly developed SiC HOM dampers have been installed in the SuperKEKB ring. In addition, we have established the horizontal high-pressure rinse method to recover the cavity performance that has degraded due to vacuum works and accidents in the long-term operation. In this report, we will present our operation experience of SRF system under the high beam currents.  
slides icon Slides MOIXA05 [3.450 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-SRF2023-MOIXA05  
About • Received ※ 19 June 2023 — Revised ※ 21 June 2023 — Accepted ※ 26 June 2023 — Issue date ※ 20 July 2023
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MOIXA06 Operational Experience with the European XFEL SRF Linac 43
 
  • Ch. Schmidt, M. Bousonville, J. Branlard, M. Diomede, S. Göller, D. Kostin, M. Scholz, V. Vogel (Fogel), N. Walker
    DESY, Hamburg, Germany
 
  The European X-ray Free Electron laser (EuXFEL) is a 3.4 km long research facility which generates ultrashort X-ray flashes of outstanding brilliance since 2017. Up to 27000 electron bunches per second are accelerated in a 1.3 km long superconducting radio frequency (SRF) linac to a maximum energy of 17.6 GeV. Within this time, operational experience with a pulsed RF machine has been gained and new operation modes simultaneously delivering electron bunches to 3 different SASE undulator beamlines have been successfully implemented. Recent activities on increasing the linac availability, power efficiency and duty cycle are discussed.  
DOI • reference for this paper ※ doi:10.18429/JACoW-SRF2023-MOIXA06  
About • Received ※ 19 June 2023 — Revised ※ 23 June 2023 — Accepted ※ 28 June 2023 — Issue date ※ 06 July 2023
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