Progress Report on the NBS/LOS Alamos RTM

Penner, S.S.; Ayres, Robert L.; Cutler, R.I.; Debenham, P. H.; Lindstrom, E.R.; Mohr, D. L.; Rose, John C.; Unterweger, Michael P.; Wilson, Mark A.; Biddle, Richard; Martin, E.R.; Stovall, J.; Tallerico, P.J.; Wilkerson, L.C.; Young, L.M.

doi:10.1109/tns.1985.4334013

Cited by 22 publications

(3 citation statements)

References 14 publications

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“…In a one-dimensional small-signal low-gain approximation the electric-field amplitude gain is given by 2 A2 3 1sin2 J ' (3) where N is the number of undulator periods, R is the cross-sectional area of the radiation, 'A 17 x i03 A, I is the current,…”

Section: Fel Perfornancementioning

confidence: 99%

NIST-NRL free-electron laser facility

et al. 1990

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A free-electron laser facility (FEL) is being constructed at the National Institute of Standards and Technology (NIST) in collaboration with the Naval Research Laboratory (NRL) . The FEL will be driven by the electron beam from the NIST racetrack microtron (RTM). The anticipated performance of the FEL is: (1) wavelength variability from 200 run to 10 tim; (2) continuous train of 3-ps pulses at 66 MHz; and (3) average power of 10 W to 200 W. This excellent performance will be achieved primarily because of the unique characteristics of the RTM. This accelerator will provide a continuously pulsed electron beam with high brightness and low energy spread at energies from 17 MeV to 185 MeV. For FEL operation high peak current is required and a new injector for this purpose has been designed. The undulator for the project is 3.64-m long with 130 periods and a peak field of 0.54 T. The construction of the undulator is nearly complete and delivery is expected shortly. The 9-m optical cavity has been designed and is under construction. An experimental area is being prepared for FEL users which will have up to six stations. Initial operation of the FEL is scheduled for 1991. The NIST-NRL FEL will provide a powerful, tunable light source for research in biomedicine, materials science , phys ics , and chemistry.

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Section: Fel Perfornancementioning

confidence: 99%

NIST-NRL free-electron laser facility

et al. 1990

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“…The IASA Continuous Wave Race Track Microtron is being built mainly from components of the NIST/LANL and the University of Illinois research RTM projects [1]. The adopted scheme consists of a 6.5 MeV injector linac followed by a cascade of two Race Track Microtrons with output energies of approxi mately 42 and 246 MeV respectively.…”

Section: Introductionmentioning

confidence: 99%

Optics for the IASA cw RTM

Sparveris¹,

Filippas²,

Herminghaus³

et al. 2019

hnps

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A Continuous Wave Cascade Racetrack Microtron (RTM) is being built at the Institute of Accelerating Systems and Applications (IASA). Making optimal use of the available equipment (obtained from NIST and the University of Illinois), a two-stage ν = 1 Cascade scheme with optics similar to those of the Mainz RTM was adopted. The IASA CW RTM will provide a variable output energy from 6.5 to 246 MeV, with current intensity exceeding ΙΟΟμΑ The LANL side-coupled linear accelerator structure operates at the RF frequency of 2380 MHz. The new design provides excellent emittance characteristics. Details of the optics design and results of the 100 keV beam Line of the Athens CW Cascade RTM are presented.

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“…The 5-MeV beam is then accelerated to 17 MeV by the linac and deflected through 180 degrees by end magnet E l to reenter the linac at the other end. Dipole magnets D7 and D8 compensate for the displacement of the 17-MeV beam by E l so that it reenters the linac on axis [2]. The 17-MeV beam is then accelerated to 29 MeV in the opposite direction by the (standing-wave) linac.…”

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The injection chicane of the National Bureau of Standards-Los Alamos racetrack microtron

Debenham

Bruce

Penner

et al. 1989

IEEE Trans. Nucl. Sci.

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Injection of 5-MeV electrons into the National Bureau of Standards-Los Alamos racetrack microtron is accomplished with a dipole magnet on the linac axis. A three-magnet chicane is used to compensate for the unwanted deflection of the recirculating beam by the injection magnet. In order to minimize emittance growth due to power supply noise, the three chicane magnets are driven by two power supplies, with each supply connected in series to two coils in different magnets. This arrangement, together with the tight space available for the chicane, constrains the choice of conductors and leads to very precise and compact low-field magnets. Magnetic field measurements demonstrate that all design goals have been achieved.

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Progress Report on the NBS/LOS Alamos RTM

Cited by 22 publications

References 14 publications

NIST-NRL free-electron laser facility

NIST-NRL free-electron laser facility

Optics for the IASA cw RTM

The injection chicane of the National Bureau of Standards-Los Alamos racetrack microtron

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