Development of Electron Guns for Linacs and DC Accelerator

Bhattacharjee, D.; Tiwari, Ratnesh; Jayaprakash, D.; Mishra, R.L.; Tillu, A.R.; Nayak, B.; Chavan, R.B.; Chandan, Shiv; Yadav, Vivek; Ghodke, S.R.; Kumar, Manoj; Mittal, K. C.; Chakravarthy, D. P.; Gantayet, L.M.

doi:10.1088/1742-6596/390/1/012071

Cited by 4 publications

(2 citation statements)

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“…Here P is the gun's perveance, defined by the geometry of the gun. However, the price, dimensions and complexity of DC electron guns and power supplies grow significantly with the voltage [44,48], (mostly, due to isolation and pulsed power system complexity), and in practice are preferred to be kept around 10-20 kV for compact medical accelerators, 30-50 kV for industrial accelerators and to 80-160 kV for large high-current facilities [15,21,44,[49][50][51]. Therefore, the injection usually occurs at lower velocities than β ph , which fundamentally limits the capture of the beam.…”

Section: Practical Limitations For Beam Injectionmentioning

confidence: 99%

Electron bunchers for industrial RF linear accelerators: theory and design guide

Kutsaev

2021

Eur. Phys. J. Plus

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The acceleration of electrons in resonant linear accelerators (linacs) typically consists of three main stages: (1) emission of the electrons from the cathode and their pre-acceleration with a DC field to the energy of tens of keV; (2) grouping the DC electron beam into bunches and their synchronization with the correct phase of high-frequency electromagnetic fields, and (3) accelerating the bunches of relativistic electrons to the required energies. Although many books describe the theoretical and practical aspects of electron linac design, most of them concentrate on beam physics in either the gun stage or in the relativistic regime, while leaving the description of the bunching process rather general. The physics of non-relativistic motion is described in the literature on ion accelerators, but in practice, it cannot be scaled to electron machines due to the significantly different particle mass and acceleration rate, beam velocity change, and frequencies. In this tutorial review paper, we will fill this gap with a detailed description of the bunching process and provide practical advice on the design of bunching sections in industrial-grade electron linacs.

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Section: Practical Limitations For Beam Injectionmentioning

confidence: 99%

Electron bunchers for industrial RF linear accelerators: theory and design guide

Kutsaev

2021

Eur. Phys. J. Plus

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“…Consequently we are not compelled to select the spherical cathode type. We also can use a simple replaceable direct heating tungsten filament [16].…”

Section: Flat Cathode Electron Gunmentioning

confidence: 99%