Ultimate energy recovery from spent relativistic electron beam in energy recovery linear accelerators

Konoplev, I. V.; Shashkov, Ya. V.; Bulygin, A. M.; Гусарова, М. А.; Marhauser, Frank

doi:10.1103/physrevaccelbeams.23.071601

Cited by 3 publications

(7 citation statements)

References 28 publications

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“…We also note, that the development of the beam break-up instabilities is a significant shortcoming of the conventional ERLs, and has hampered the development of the high-intensity applications based on ERLs, including colliders and high-power light sources. This work will describe opportunities and concepts, which have risen from the recent developments of the dual-axis asymmetric cavities for energy recovery linacs (ERL) [25]- [31], to overcome some of the limitations associated with BBU instabilities, improve energy consumption and energy management flexibility. In this paper we suggest a novel concept which is based on merging the advantages of the circular (capability to accumulate beams) and linear (capability to deliver good quality beams) accelerators.…”

Section: Jinst 17 P01011mentioning

confidence: 99%

“…Other limitations observed in TeV energy circular machines which are important to take into consideration, are associated with the beam quality degradation linked to several phenomena, including natural energy spread and emittance dilution due to quantum excitations [16,31,32]. The undisputable advantage of the circular machines is the possibility to increase luminosity by continuously increasing the current parameter 𝐼.…”

Section: Limitation and Challengesmentioning

confidence: 99%

“…At this stage, we do not see obvious advantages/disadvantages for either scheme, and the justifications for the selection of a specific design would be a future development. All stages of the beam acceleration and deceleration (A/D) use the dual axis asymmetric cavities [28]- [31]. This type of the cavity is suggested due to their EM properties (i.e.…”

Section: Preliminary Concept Of the Circular-linear Energy Recovery C...mentioning

confidence: 99%

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Concept of circular-linear energy recovery accelerator to probe the energy frontier

Konoplev

Bogacz²,

Shashkov

et al. 2022

J. Inst.

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Energy-frontier accelerators provide powerful tools performing high precision measurements confirming the fundamentals of the physics and broadening new research horizons. Such machines are either driven by circular or linear accelerators. The circular machines, having the centre-of-mass (CM) energy values reaching 200 GeV (for leptons) and above, experience beam energy loss and quality dilution, for example, due to synchrotron radiation, limiting the overall CM energy achievable and requiring a constant energy top-up to compensate the loss and the beam quality dilution. Linear colliders overcome these limitations, while the finite capabilities of generating high average current beams limits the luminosity. This is partially compensated by the quality of the colliding beams. In this work, we suggest a novel design of circular-linear accelerator based on the merging of the “non-emitting”, low-energy storage rings and energy recovery linear accelerators. We suggest using the recently considered dual-axis asymmetric cavities to enable the operation of such a system, and in particular the energy recovery from spent, high-intensity beams. The machine considered, under the scope of the SNOWMASS-2021 initiative, can be potentially used to reach ultimate energy frontiers in high-energy physics as well as to drive next generation light sources. The merging of circular and linear systems, and applications of dual axes cavities, should allow the maintaining of high beam quality, high luminosity, and high energy efficiency, while offering a flexible energy management and opening clear opportunity for reducing the running cost. We note that the numbers shown in the paper are for illustration purpose and can be improved further.

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Section: Jinst 17 P01011mentioning

confidence: 99%

Section: Limitation and Challengesmentioning

confidence: 99%

Section: Preliminary Concept Of the Circular-linear Energy Recovery C...mentioning

confidence: 99%

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Concept of circular-linear energy recovery accelerator to probe the energy frontier

Konoplev

Bogacz²,

Shashkov

et al. 2022

J. Inst.

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“…A resultant that lies exactly at the origin indicates that any off-crest acceleration is matched by corresponding off-trough deceleration 2 . If the ERL consists of multiple RF sections, the resultant RF load of each section must lie on the vertical axis unless there is a mechanism present to transfer load between them, for example [7,8]. If energy lost to synchrotron radiation (SR) is significant, this energy balance must change.…”

Section: Definitions and Assumptionsmentioning

confidence: 99%

“…In this instance a twin axis linac is required with an efficient transfer of rf power between the cavities [8,20].…”

Section: Example Ii: Energy Spread Minimizationmentioning

confidence: 99%

Construction of Self-Consistent Longitudinal Matches in Multi-Pass Energy Recovery Linacs

Segurana,

Bailey,

Williams

2021

Preprint

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Any proposal for an accelerator facility based upon a multipass Energy Recovery Linac (ERL) must possess a self-consistent match in longitudinal phase space, not just transverse phase space. We therefore present a semi-analytic method to determine self-consistent longitudinal matches in any multipass ERL. We apply this method in collider scenarios (embodying an energy spread minimising match) and FEL scenarios (embodying a compressive match), and discuss the consequences of each. As an example of the utility of the method, we prove that the choice of common or separate recirculation transport determines the feasibility of longitudinal matches in cases where disruption, such as synchrotron radiation loss, exists. We show that any high energy multipass ERL collider based upon common recirculation transport will require special care to produce a self-consistent longitudinal match, but that one based upon separate transport is readily available. Furthermore we show that any high energy multipass ERL FEL driver based upon common recirculation transport requires a larger resultant rf beam load than the one based on separate transport, favouring the separate transport designs.

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Construction of self-consistent longitudinal matches in multipass energy recovery linacs

Segurana

Bailey

Williams

2022

Phys. Rev. Accel. Beams

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Ultimate energy recovery from spent relativistic electron beam in energy recovery linear accelerators

Cited by 3 publications

References 28 publications

Concept of circular-linear energy recovery accelerator to probe the energy frontier

Concept of circular-linear energy recovery accelerator to probe the energy frontier

Construction of Self-Consistent Longitudinal Matches in Multi-Pass Energy Recovery Linacs

Construction of self-consistent longitudinal matches in multipass energy recovery linacs

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