Advanced RF Sources R&amp;D for Economical Future Colliders

Weatherford, Brandon; Nanni, Emilio A.; Tantawi, Sami

doi:10.48550/arxiv.2203.15984

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…To realize this vision, we need to have a comprehensive program for these advanced microwave rf sources [78][79][80][81] with the end goal of an experimental demonstration of C-band modular multi-beam klystrons with efficiencies ≥ 65%, with periodic permanent magnet (PPM) focusing and high power. This should be followed by a demonstration of the combining mechanism; many methodologies are possible, but there is a new invention for combining with a two-dimensional Floquet network; a 16 tube combiner has already been demonstrated [23].…”

Section: Advanced Rf Source Research and Developmentmentioning

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: Advanced Rf Source Research and Developmentmentioning

confidence: 99%

Status and future plans for C³ R&D

Nanni,

Breidenbach,

et al. 2023

J. Inst.

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“…The presentations and discussion at the workshop covered both the present state of the art and future plans for the community. Several White Papers were submitted that directly cover the scope of these discussions: [38,39,40,41,42,43]. Additionally, facility White Papers for ILC [11], CLIC [30], C 3 [31], FCC [44] and the Muon Collider [45] identify key technologies to develop that could have significant impact on the performance or feasibility of these concepts.…”

Section: Rf Systems and Sourcesmentioning

confidence: 99%

“…High Average Power: Excellent progress is being made toward improving the performance of high average power RF sources. Multi-beam sources, novel device concepts, triodes, phase locked magnetrons, and distributed beam devices are all exploring innovated solutions for higher power, higher efficiency and lower cost [38,39]. Models of scaled production indicate that breaking through the GARD decadal goal of $1/W average is within reach.…”

Section: Rf Sourcesmentioning

confidence: 99%

RF Accelerator Technology R&D: Report of AF7-rf Topical Group to Snowmass 2021

Belomestnykh¹

2022

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“…Incorporating periodic permanent magnet focusing can further reduce fabrication and operation costs. Another approach is to develop a simple modular system that would combine power of several low-voltage, highly efficient klystrons [44,67].…”

Section: High-efficiency Low-cost Klystronsmentioning

confidence: 99%

RF Technologies for Future Colliders

Belomestnykh

2022

Front. Phys.

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Particle colliders remain indispensable scientific instruments to discover and study new elementary particles and fundamental forces of nature. Whether the collider is a factory (used to improve precision of measuring properties of already discovered particles or to enable studies of rare decay channels), an energy frontier machine (aimed at discovering new particles and forces), a heavy ion collider (allowing studies of what the universe looked like in the early moments after its creation), or an electron-hadron collider (where electrons are used for probing heavy ions or protons to study the fundamental force binding all visible matter), the radio frequency technologies play a key role in enabling the machine to reach its goals. This article considers challenges presented to the radio frequency technologies by the next generation of particle colliders and reviews R&D approaches and directions to address these challenges.

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Advanced RF Sources R&D for Economical Future Colliders

Cited by 3 publications

References 5 publications

Status and future plans for C³ R&D

Status and future plans for C³ R&D

RF Accelerator Technology R&D: Report of AF7-rf Topical Group to Snowmass 2021

RF Technologies for Future Colliders

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Advanced RF Sources R&D for Economical Future Colliders

Cited by 3 publications

References 5 publications

Status and future plans for C3 R&D

Status and future plans for C3 R&D

RF Accelerator Technology R&D: Report of AF7-rf Topical Group to Snowmass 2021

RF Technologies for Future Colliders

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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