First C-Band High Gradient Cavity Testing Results at LANL

Simakov, Evgenya I.; Fleming, Ryan; Gorelov, D.; Jankowski, Todd A.; Kirshner, M.F.; Lewellen, John W.; Lu, Xueying; Middendorf, Mark; Nanni, Emilio A.; Pizzolatto, Jonathan; Schneider, Mitchell; Tajima, T.; Tantawi, Sami

doi:10.18429/jacow-ipac2021-mopab341

Cited by 3 publications

(2 citation statements)

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“…High gradient operation of a distributed coupling accelerator at normal and cryogenic temperatures has already been demonstrated (including acceleration of beam) in multiple single and multi-cell structures [4,5,90,91]. High gradient operation with low breakdown rate has been demonstrated at C-band [92]. A one-meter C 3 prototype was fabricated using the desired split-block technique and passed low power RF tests at cryogenic temperatures [93].…”

Section: Jinst 18 P09040mentioning

confidence: 99%

Status and future plans for C³ R&D

Nanni,

Breidenbach,

et al. 2023

J. Inst.

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C3 is an opportunity to realize an e + e - collider for the study of the Higgs boson at √s = 250 GeV, with a well defined upgrade path to 550 GeV while staying on the same short facility footprint [2,3]. C3 is based on a fundamentally new approach to normal conducting linear accelerators that achieves both high gradient and high efficiency at relatively low cost. Given the advanced state of linear collider designs, the key system that requires technical maturation for C3 is the main linac. This paper presents the staged approach towards a facility to demonstrate C3 technology with both Direct (source and main linac) and Parallel (beam delivery, damping ring, ancillary component) R&D. The primary goal of the C3 Demonstration R&D Plan is to reduce technical and cost risk by building and operating the key components of C3 at an adequate scale. This R&D plan starts with the engineering design, and demonstration of one cryomodule and will culminate in the construction of a 3 cryomodule linac with pre-production prototypes. This R&D program would also demonstrate the linac rf fundamentals including achievable gradient and gradient stability over a full electron bunch train and breakdown rates. It will also investigate beam dynamics including energy spread, wakefields, and emittance growth. This work will be critical to confirm the suitability of the C3 beam parameters for the physics reach and detector performance in preparation for a Conceptual Design Report (CDR), as well as for follow-on technology development and industrialization. The C3 Demonstration R&D Plan will open up significant new scientific and technical opportunities based on development of high-gradient and high-efficiency accelerator technology. It will push this technology to operate both at the GeV scale and mature the technology to be reliable and provide high-brightness electron beams. The timeline for progressing with C3 technology development will be governed by practical limitations on both the technical progress and resource availability. It consists of four stages: Stage 0) Ongoing fundamental R&D on structure prototypes, damping and vibrations. Stage 1) Advancing the engineering maturity of the design and developing start-to-end simulations including space-charge and wakefield effects. This stage will include testing of strucutres operating at cryogenic temperatures. Beam tests would be performed with high beam current to test full beam loading. Stage 2) Production and testing of the first cryomodule at cryogenic temperatures. This would provide sufficient experimental data to compile a CDR and it is anticipated for Stage 2 to last 3 years and to culminate with the transport of photo-electrons through the first cryomodule. Stage 3) Updates to the engineering design of the cryomodules, production of the second and third cryomodule and their installation. Lower charge and lower emittance beams will be used to investigate emittance growth. The successful full demonstration of the 3 cryomodules to deliver up to a 3 GeV beam and achieve the C3five gradient will allow a comprehensive and robust evaluation of the technical design of C3 as well as mitigate technical, schedule, and cost risks required to proceed with a Technical Design Report (TDR).

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Section: Jinst 18 P09040mentioning

confidence: 99%

Status and future plans for C³ R&D

Nanni,

Breidenbach,

et al. 2023

J. Inst.

Self Cite

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“…The C 3 approach has the potential of operating at extremely high gradients. Prototype structures have been operated with beam up to 160 MeV/m [701,707] and single cell test cavities have exceeded 200 MeV/m gradients [708,709]. The C 3 cryomodule that is under development for the main linac and the RF sources that accompany it fits comfortably within the existing diameter tunnel that is planned for the ILC main linac tunnel.…”

Section: Future Programmementioning

confidence: 99%

The International Linear Collider (Report to Snowmass 2021)

Aryshev¹,

Behnke²,

Berggren³

et al. 2022

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The International Linear Collider (ILC) is on the table now as a new global energyfrontier accelerator laboratory taking data in the 2030's. The ILC addresses key questions for our current understanding of particle physics. It is based on a proven accelerator technology. Its experiments will challenge the Standard Model of particle physics and will provide a new window to look beyond it. This document brings the story of the ILC up to date, emphasizing its strong physics motivation, its readiness for construction, and the opportunity it presents to the US and the global particle physics community.

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C$^3$: A "Cool" Route to the Higgs Boson and Beyond

Bai¹,

Barklow²,

Bartoldus³

et al. 2021

Preprint

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We present a proposal for a cold copper distributed coupling accelerator that can provide a rapid route to precision Higgs physics with a compact 8 km footprint. This proposal is based on recent advances that increase the efficiency and operating gradient of a normal conducting accelerator. This technology also provides an e + e − collider path to physics at multi-TeV energies. In this article, we describe our vision for this technology and the near-term R&D program needed to pursue it.

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First C-Band High Gradient Cavity Testing Results at LANL

Cited by 3 publications

References 1 publication

Status and future plans for C³ R&D

Status and future plans for C³ R&D

The International Linear Collider (Report to Snowmass 2021)

C$^3$: A "Cool" Route to the Higgs Boson and Beyond

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First C-Band High Gradient Cavity Testing Results at LANL

Cited by 3 publications

References 1 publication

Status and future plans for C3 R&D

Status and future plans for C3 R&D

The International Linear Collider (Report to Snowmass 2021)

C$^3$: A "Cool" Route to the Higgs Boson and Beyond

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Product

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Status and future plans for C³ R&D

Status and future plans for C³ R&D