The Cornell ERL prototype project

Hoffstaetter, Georg; Barstow, Buz; Bazarov, Ivan; Belomestnykh, S.; Bilderback, Donald H.; Grüner, Sol M.; Liepe, Matthias; Padamsee, H.; Sagan, D.; Shemelin, Valery; Sinclair, C. K.; Talman, R.; Tigner, M.; Veshcherevich, V.; Krafft, Geoffrey; Merminga, L.

doi:10.1109/pac.2003.1288876

Cited by 14 publications

(7 citation statements)

References 5 publications

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“…The existing CESR ring is then used to return the beam and inject it into additional undulators, before it gets decelerated to 10 MeV again inside the main linac sections. A more detailed description can be found in [3]. This paper will focus on the Main Linac Cryomodules (MLC), designed and now fabricated under an NSF funded R&D phase, 64 of which will form the main linac of the proposed ERL.…”

Section: Introductionmentioning

confidence: 99%

Design and construction of the main linac module for the superconducting energy recovery linac project at Cornell

Eichhorn¹,

Bullock²,

He³

et al. 2014

AIP Conference Proceedings

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Abstract. Cornell University has been designing and building superconducting accelerators for various applications for more than 50 years. Currently, an energy-recovery linac (ERL) based synchrotron-light facility is proposed making use of the existing CESR facility. As part of the phase 1 R&D program funded by the NSF, critical challenges in the design were addressed, one of them being a full linac cryo-module. It houses 6 superconducting cavities-operated at 1.8 K in continuous wave (CW) mode -with individual HOM absorbers and one magnet/ BPM section. Pushing the limits, a high quality factor of the cavities (2•10 10 ) and high beam currents (100 mA accelerated plus 100 mA decelerated) are targeted. We will present the design of the main linac cryo-module (MLC) being finalized recently, its cryogenic features and report on the status of the fabrication which started in late 2012.

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Section: Introductionmentioning

confidence: 99%

Design and construction of the main linac module for the superconducting energy recovery linac project at Cornell

Eichhorn¹,

Bullock²,

He³

et al. 2014

AIP Conference Proceedings

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“…This is important at low energy where space charge has a strong impact on the bunch. x-ray lines With the advent of Cornell's Energy Recovery Linac (ERL) project, 11 it has become clear that the ability of Bmad to do a "complete" front-to-end simulation beginning from electron generation at the gun cathode, through x-ray production, and tracking x-rays to the experimental end-stations would be very useful. X-ray simulation is, however, a complicated matter.…”

Section: Introductionmentioning

confidence: 99%

Combined charged-particle and X-ray simulations using the Bmad open source software library

et al. 2011

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The open source Bmad software library, developed at Cornell University, has proved to be a useful tool for accelerator simulations owing to its modular, object-oriented design. Bmad has been used to simulate the storage ring CESR for many years, and to design and analyze the proposed Cornell Energy Recovery Linac. Work is ongoing to expand Bmad in a number of directions. In particular, the ability to be able to do a combined simulation of accelerated charged-particle beams and the x-ray beams they create is being developed. Ultimately a complete framework for simulations from the gun cathode (including space-charge) to x-ray generation, to x-ray tracking through to the experimental end-stations is envisioned. The flexibility of Bmad is such that multiple propagation algorithms can be accommodated with the user selecting the appropriate algorithm for each individual element. To this end, the integration of Bmad with the SHADOW tracking code is in development.

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“…As a first and crucial step, Cornell has launched an extensive R&D program to study and demonstrate the production and preservation of the ultralow emittance beam in the ERL injector. A prototype of the injector is presently under construction at Cornell, and first beam in the full injector is expected for 2008 [3]. One of the most challenging components in the injector is its cryomodule hosting five superconducting (SC) 2-cell cavities.…”

Section: Introductionmentioning

confidence: 99%

The cornell erl superconducting 2-cell injector cavity string and test cryomodule

Liepe

Belomestnykh

Chojnacki

et al. 2007

2007 IEEE Particle Accelerator Conference (PAC)

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Cornell University is developing and fabricating a SRF injector cryomodule for the acceleration of the high current (100 mA) beam in the Cornell ERL prototype and ERL light source. Major challenges include emittance preservation of the low energy, ultra low emittance beam, cw cavity operation, and strong HOM damping with efficient HOM power extraction. Prototypes have been completed for the 2-cell niobium cavity with helium vessel, coaxial blade tuner with piezo fine tuners, twin high power input couplers, and beam line HOM absorbers loaded with ferrites and ceramics. Axial symmetry of HOM absorbers, together with two symmetrically placed input couplers per cavity, avoids transverse on-axis fields, which would cause emittance growth. A one-cavity cryostat has been designed following concepts of the TTF cryostat, and is presently under fabrication and assembly. The cryostat design has been optimized for precise cavity alignment, good magnetic shielding, and high dynamic cryogenic loads from the RF cavities, input couplers, and HOM loads. In this paper we report on the status of the assembly and first test of the one-cavity test cryostat.

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The Cornell ERL prototype project

Cited by 14 publications

References 5 publications

Design and construction of the main linac module for the superconducting energy recovery linac project at Cornell

Design and construction of the main linac module for the superconducting energy recovery linac project at Cornell

Combined charged-particle and X-ray simulations using the Bmad open source software library

The cornell erl superconducting 2-cell injector cavity string and test cryomodule

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