A dedicated synchrotron light source for ultrafast X-ray science

Corlett, J.; DeSantis, S.; Hartmann, Nik; Heimann, Philip; Lafever, R.; Li, D.; Padmore, H. A.; Rimmer, Robert; Robinson, K.; Schoenlein, R. W.; Tanabe, J.; Wang, S.; Zholents, A.; Kairan, D.

doi:10.1109/pac.2001.987856

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…The prototype targets a current of 100 mA at 100 MeV, a cryogenic plant of 500 W. The PERL project [117] (BNL) aims at 3 to 7 GeV, an average current of 200 mA, with TESLA types cryogenic modules. The LUX project (LBL) [118] comports a superconducting LINAC of 600 MeV recirculating four times for reaching an energy of 2.5 GeV and in vacuum undulators. The radiation will be produced by Thomson scattering of pulses of 300 fs [119] and on the fs "sliced" emission of synchrotron radiation "slicing" [120].…”

Section: State-of-the-artmentioning

confidence: 99%

X radiation sources based on accelerators

Couprie

Filhol

2008

Comptes Rendus. Physique

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Light sources based on accelerators aim at producing very high brilliance coherent radiation, tuneable from the infrared to X-ray range, with picosecond or femtosecond light pulses.The first synchrotron light sources were built around storage rings in which a large number of relativistic electrons produce "synchrotron radiation" when their trajectory is subjected to a magnetic field, either in bending magnets or in specific insertion devices (undulators), made of an alternating series of magnets, allowing the number of curvatures to be increased and the radiation to be reinforced.These "synchrotron radiation" storage rings are now used worldwide (there are more than thirty), and they simultaneously distribute their radiation to several tens of users around the storage ring.The most effective installations in term of brilliance are the so-called 3rd generation synchrotron radiation light sources. The radiation produced presents pulse durations of the order of a few tens of ps, at a high rate (of the order of MHz); it is tuneable over a large range, depending on the magnetic field and the electron beam energy and its polarisation is adjustable (in the VUV-soft-X range). Generally, a very precise spectral selection is made by the users with a monochromator.The single pass linear accelerators can produce very short electron bunches (∼ 100 femtosecond). The beam of very high electronic density is sent into successive undulator modules, reinforcing the radiation's longitudinal coherence, produced according to a Free Electron Laser (FEL) scheme by the interaction between the electron bunch and a light wave. The very high peak brilliance justifies their designation as 4th generation sources. The number of users is smaller because an electron pulse produces a radiation burst towards only one beamline. Energy Recovery Linacs (ERL) let the beam pass several times in the accelerator structures either to recover the energy or to accelerate the electrons during several turns, and thus provide subpicosecond beams for a greater number of users.A state-of-the-art of X sources using conventional (and not laser plasma based) accelerators is given here, underlying the performance already reached or forecast and the essential challenges.

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Section: State-of-the-artmentioning

confidence: 99%

X radiation sources based on accelerators

Couprie

Filhol

2008

Comptes Rendus. Physique

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“…As an intermediate step the Cornell team have proposed a demonstrator at 100 MeV and 100 mA [8]. A related series of novel light source proposals has a multi-pass configuration [9] but may omit energy recovery [10].…”

Section: Erl Light Source Conceptmentioning

confidence: 99%

4GLS: a new type of fourth generation light source facility

Poole

Bennett

Bowler

et al.

Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440)

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Consideration is now being given in the UK to the provision of an advanced facility at lower energy to complement the DIAMOND x-ray light source. The proposed solution, 4GLS, is a superconducting energy recovery linac (ERL) with an output energy around 600 MeV, delivering both CW beam currents up to 100 mA and alternatively high charge bunches for FEL applications. Production and manipulation of short electron bunches (fs) is a vital part of the source specification. In addition to beam lines from undulator sources in the ERL recovery path there will be three FELs: two will be oscillator types in the infrared and VUV respectively, and the third will be a high gain system for XUV output. The project is outlined, together with its status and the R&D challenges posed. A funded prototype based on a 50 MeV ERL is also described.

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Status of flat electron beam production

Edwards¹,

Edwards²,

Holtkamp³

et al.

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

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Last year at LINAC2000 [1] we reported our initial verification of the round beam (comparable transverse emittances) to flat beam (high transverse emittance ratio) transformation described by Brinkmann, Derbenev, and Flöttmann [2]. Further analysis of our data has confirmed that a transverse emittance ratio of approximately 50 was observed. Graphics representing observational detail are included here, and future plans outlined.

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A dedicated synchrotron light source for ultrafast X-ray science

Cited by 4 publications

References 6 publications

X radiation sources based on accelerators

X radiation sources based on accelerators

4GLS: a new type of fourth generation light source facility

Status of flat electron beam production

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