JINR LHEP photoinjector prototype

Photocathode electron guns are key to the generation of high-quality electron bunches, which are currently the primary source of electrons for linear electron accelerators. The photogun test bench built at the Joint Institute for Nuclear Research (JINR) is currently being used to further develop the hollow (backside irradiated) photocathode concept. A major achievement was the replacement of the hollow photocathode by a technologically more feasible transmission photocathode made from a metal mesh that serves as a substrate for films of various photomaterials. A number of thin-film cathodes on quartz glass substrates are fabricated by photolithography. The vectorial photoeffect (related to the surface-normal component of the wave electric field) is observed and found to significantly affect the quantum efficiency. The dependence of the quantum efficiency of diamond-like carbon photocathodes on the manufacturing technology is investigated. The Rutherford backscattering and elastic recoil detection techniques are combined to carry out an elemental analysis of the films. An estimate of the emittance of a 400 pC electron beam is obtained using the cross-section method.

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Electron gun with a transmission photocathode for the Joint Institute for Nuclear Research photoinjector

Balalykin¹,

Minashkin²,

Nozdrin³

et al. 2017

Phys.-Usp.

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show abstract

Electron gun with a transmission photocathode for the Joint Institute for Nuclear Research photoinjector

Balalykin¹,

Minashkin²,

Nozdrin³

et al. 2017

Usp. Fiz. Nauk

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JINR LHEP photoinjector prototype

Cited by 2 publications

References 4 publications

Electron gun with a transmission photocathode for the Joint Institute for Nuclear Research photoinjector

Electron gun with a transmission photocathode for the Joint Institute for Nuclear Research photoinjector

Electron gun with a transmission photocathode for the Joint Institute for Nuclear Research photoinjector

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