Experimental Demonstration of Hadron Beam Cooling Using Radio-Frequency Accelerated Electron Bunches

Fedotov, A. V.; Altinbas, Z.; Belomestnykh, S.; Ben‐Zvi, I.; Blaskiewicz, M.; Brennan, M.J.; Bruno, D.; Brutus, C.; Costanzo, Michael; Drees, A.; Fischer, W.; Fite, J.; Gaowei, Mengjia; Gassner, D.; Gu, X.; Halinski, J; Hamdi, K.; Hammons, L.; Harvey, M.; Hayes, T.; Hulsart, R.; Inacker, Patrick; Jamilkowski, James; Jing, Yichao; Kewisch, J.; Kankiya, Prerana; Kayran, D.; Lehn, R; Liaw, Chong-Jer; Litvinenko, Vladimir; Liu, C; Ma, Jun; Mahler, G.; Mapes, M.; Marušić, A.; Mernick, K.; Mi, C.; Michnoff, R.; Miller, Toby; Minty, M.; Narayan, Geetha; Nayak, S. K.; Nguyen, Linh; Paniccia, Matthew; Pinayev, I.; Polizzo, Salvatore; Ptitsyn, V.; Rao, T.; Robert‐Demolaize, G.; Roser, T.; Sandberg, J.; Schoefer, V.; Schultheiss, C.; Seletskiy, S.; Severino, F.; Shrey, Travis; Smart, L.; Smith, Kevin S.; Song, Honghai; Sukhanov, A.; Than, Roberto; Thieberger, P.; Trabocchi, Steven; Tuozzolo, J.; Wanderer, P.; Wang, E; Wang, G; Weiss, Daniel H.; Xiao, Binping; Xin, Tianmu; Xu, Wencan; Zaltsman, A.; Zhao, He; Zhao, Zhi

doi:10.1103/physrevlett.124.084801

Cited by 30 publications

(8 citation statements)

References 12 publications

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“…In this paper, we described our experience with the commissioning of the world's first rf-based electron cooler and with the attainment of an electron beam of the required quality [32].…”

Section: Discussionmentioning

confidence: 99%

High-brightness electron beams for linac-based bunched beam electron cooling

Kayran¹,

Altinbas²,

Bruno³

et al. 2020

Phys. Rev. Accel. Beams

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A high-current high-brightness electron accelerator for low-energy RHIC electron cooling (LEReC) was successfully commissioned at Brookhaven National Laboratory. The LEReC accelerator includes a dc photoemission gun, a laser system, a photocathode delivery system, magnets, beam diagnostics, a superconducting rf booster cavity, and a set of normal conducting rf cavities to provide enough flexibility to tune the beam in the longitudinal phase space. Cooling with nonmagnetized rf accelerated electron beams requires longitudinal corrections to obtain a small momentum spread while preserving the transverse emittances. Electron beams with kinetic energies of 1.6 and 2.0 MeV with a beam quality suitable for cooling were successfully propagated through 100 m of beam lines, including dispersion sections, maintained through both cooling sections in RHIC and used for cooling ions in both RHIC rings simultaneously. The beam quality suitable for cooling RHIC beams was achieved in 2018, which led to the first experimental demonstration of bunched beam electron cooling of hadron beams in 2019.

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“…In this paper, we described our experience with the commissioning of the world's first rf-based electron cooler and with the attainment of an electron beam of the required quality [32].…”

Section: Discussionmentioning

confidence: 99%

High-brightness electron beams for linac-based bunched beam electron cooling

Kayran¹,

Altinbas²,

Bruno³

et al. 2020

Phys. Rev. Accel. Beams

Self Cite

View full text Add to dashboard Cite

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“…A true breakthrough was the demonstration of the ionization cooling of 140 MeV/c muons at the MICE experiment at RAL (United Kingdom)-some 10% beam emittance reduction was observed in a single pass through the cooling section [63]. In 2020, "bunched" electron beam cooling of ions in RHIC (γ ~5)-remarkable by the pioneering use of high quality bunched electron beams from an electron beam RF photoinjector gun (before, only DC electron accelerators were used with limited capability to get to very high energies)-was demonstrated at BNL [64]. Earlier this year another outstanding result was reported by the Fermilab team which has successfully carried out a proof-of-principle experiment on the optical stochastic cooling of 100 MeV electrons in the IOTA ring in which the use of undulator magnets -instead of electrostatic pickups in traditional stochastic cooling setups -allowed to expand the feedback system bandwidth by several orders of magnitude to a THz range [65].…”

Section: Beam Coolingmentioning

confidence: 99%

Challenges of Future Accelerators for Particle Physics Research

2022

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For over half a century, high-energy particle accelerators have been a major enabling technology for particle and nuclear physics research as well as sources of X-rays for photon science research in material science, chemistry and biology. Particle accelerators for energy and intensity Frontier research in particle and nuclear physics continuously push the accelerator community to invent ways to increase the energy and improve the performance of accelerators, reduce their cost, and make them more power efficient. The accelerator community has demonstrated imagination and creativity in developing a plethora of future accelerator ideas and proposals. The technical maturity of the proposed facilities ranges from shovel-ready to those that are still largely conceptual. At this time, over 100 contributed papers have been submitted to the Accelerator Frontier of the US particle physics decadal community planning exercise known as Snowmass’2021. These papers cover a broad spectrum of topics: beam physics and accelerator education, accelerators for neutrinos, colliders for Electroweak/Higgs studies and multi-TeV energies, accelerators for Physics Beyond Colliders and rare processes, advanced accelerator concepts, and accelerator technology for Radio Frequency cavities (RF), magnets, targets and sources. This paper provides an overview of the present state of accelerators for particle physics and gives a brief description of some of the major facilities that have been proposed, their perceived advantages and some of the remaining challenges.

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“…Transverse and longitudinal stochastic cooling based on microwave technology helps to counteract intra-beam scattering (IBS) of high-energy, bunched ion beams for prolonged luminosity lifetime [16]. The luminosity of low-energy ion collisions is also enhanced thanks to a hadron cooling system that uses RF accelerated electron bunches [17]. Two full Siberian snakes (spin rotators) in each ring enable high luminosity collisions of polarized proton beams at 255 GeV, with a polarization up to 55% averaged over a full store and over the two beams [18].…”

Section: Introductionmentioning

confidence: 99%

Electron-Hadron Colliders: EIC, LHeC and FCC-eh

2022

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Electron-hadron colliders are the ultimate tool for high-precision quantum chromodynamics studies and provide the ultimate microscope for probing the internal structure of hadrons. The electron is an ideal probe of the proton structure because it provides the unmatched precision of the electromagnetic interaction, as the virtual photon or vector bosons probe the proton structure in a clean environment, the kinematics of which is uniquely determined by the electron beam and the scattered lepton, or the hadronic final state accounting appropriately for radiation. The Hadron Electron Ring Accelerator HERA (DESY, Hamburg, Germany) was the only electron-hadron collider ever operated (1991–2007) and advanced the knowledge of quantum chromodynamics and the proton structure, with implications for the physics studied in RHIC (BNL, Upton, NY) and the LHC (CERN, Geneva, Switzerland). Recent technological advances in the field of particle accelerators pave the way to realize next-generation electron-hadron colliders that deliver higher luminosity and enable collisions in a much broader range of energies and beam types than HERA. Electron-hadron colliders combine challenges from both electron and hadron machines besides facing their own distinct challenges derived from their intrinsic asymmetry. This review paper will discuss the major features and milestones of HERA and will examine the electron-hadron collider designs of the Electron-Ion Collider (EIC) currently under construction at BNL, the CERN’s Large Hadron electron Collider (LHeC), at an advanced stage of design and awaiting approval, and the Future Circular lepton-hadron Collider (FCC-eh).

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Experimental Demonstration of Hadron Beam Cooling Using Radio-Frequency Accelerated Electron Bunches

Cited by 30 publications

References 12 publications

High-brightness electron beams for linac-based bunched beam electron cooling

High-brightness electron beams for linac-based bunched beam electron cooling

Challenges of Future Accelerators for Particle Physics Research

Electron-Hadron Colliders: EIC, LHeC and FCC-eh

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