Development for a supercompact 
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-band pulse compression system and its application at SLAC

Wang, Juwen W.; Tantawi, Sami; Xu, Chen; Franzi, Matt; Krejcik, P.; Bowden, Gordon; Condamoor, Shantha; Ding, Yuantao; Dolgashev, Valery; Eichner, J.; Haase, Andrew; Lewandowski, James; Xiao, Liling

doi:10.1103/physrevaccelbeams.20.110401

Cited by 20 publications

(8 citation statements)

References 4 publications

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“…However, we are not restricted to geometries useful for particle acceleration. Quality factors of Q int ∼ 10 5 are commonly achieved in overmoded non-superconducting RF cavities with non-accelerator geometries [53][54][55]. This suggests that SRF counterparts can be constructed with quality factors as large as Q int ∼ 10 12 .…”

Section: A Cavity Conceptmentioning

confidence: 99%

Axion dark matter detection by superconducting resonant frequency conversion

Berlin

D’Agnolo

Ellis

et al. 2020

J. High Energ. Phys.

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We propose an approach to search for axion dark matter with a specially designed superconducting radio frequency cavity, targeting axions with masses m a 10 −6 eV. Our approach exploits axion-induced transitions between nearly degenerate resonant modes of frequency ∼ GHz. A scan over axion mass is achieved by varying the frequency splitting between the two modes. Compared to traditional approaches, this allows for parametrically enhanced signal power for axions lighter than a GHz. The projected sensitivity covers unexplored parameter space for QCD axion dark matter for 10 −8 eV m a 10 −6 eV and axion-like particle dark matter as light as m a ∼ 10 −14 eV.

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Section: A Cavity Conceptmentioning

confidence: 99%

Axion dark matter detection by superconducting resonant frequency conversion

Berlin

D’Agnolo

Ellis

et al. 2020

J. High Energ. Phys.

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“…This implies that the resolution of the present bunch shape measurement technique would be no better than ∼0.1 ps. We note, on the other hand, that the active deflectors based on X-band klystron system have reached approximately femtosecond-level temporal resolutions [27,28].…”

Section: B Cigar (Fat) Beam Casementioning

confidence: 88%

Use of a corrugated beam pipe as a passive deflector for bunch length measurements

Seok

Chung

Kang

et al. 2018

Phys. Rev. Accel. Beams

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“…Recent innovations in RF compressor cavity design have enabled a dramatic reduction in the system footprint while maintaining the capability to produce 6-fold pulse compression and isolate the source from the reflected RF signal from the cavities. [85,86] For cryogenic copper structures, cavity designs will need to achieve high intrinsic quality factors, 𝑄 0 up to 400,000, and high coupling factors, 𝛽 up to 10. Active research in this area will continue to benefit the broader accelerator community that relies on pulse compressors to supply the peak powers needed for high gradient operation.…”

Section: Rf Pulse Compressionmentioning

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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Development for a supercompact X -band pulse compression system and its application at SLAC

Cited by 20 publications

References 4 publications

Axion dark matter detection by superconducting resonant frequency conversion

Axion dark matter detection by superconducting resonant frequency conversion

Use of a corrugated beam pipe as a passive deflector for bunch length measurements

Status and future plans for C³ R&D

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Development for a supercompact X -band pulse compression system and its application at SLAC

Cited by 20 publications

References 4 publications

Axion dark matter detection by superconducting resonant frequency conversion

Axion dark matter detection by superconducting resonant frequency conversion

Use of a corrugated beam pipe as a passive deflector for bunch length measurements

Status and future plans for C3 R&D

Contact Info

Product

Resources

About

Status and future plans for C³ R&D