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High-intensity pulsed ion beam composition and the energy spectrum using the time-of-flight method

Published online by Cambridge University Press:  25 July 2018

A. I. Pushkarev ,
Y. I. Isakova  and
A. I. Prima
A. I. Pushkarev
Affiliation:
Tomsk Polytechnic University, 30, Lenin Ave 634050, Tomsk, Russia
Y. I. Isakova*
Affiliation:
Tomsk Polytechnic University, 30, Lenin Ave 634050, Tomsk, Russia
A. I. Prima
Affiliation:
Tomsk Polytechnic University, 30, Lenin Ave 634050, Tomsk, Russia
*
Author for correspondence: Y. I. Isakova, Tomsk Polytechnic University, 30, Lenin Ave 634050, Tomsk, Russia. E-mail: [email protected]
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Abstract

The paper describes a technique for operative control of the high-intensity pulsed ion beam parameters. The time-of-flight diagnostics uses one high-speed Faraday cup sensor with magnetic cut-off of low-energy electrons. The technique makes it possible to determine the composition of the beam (the type of ions and the degree of ionization), the absolute values of the current density of ions and the energy spectrum for each type of ions with an error of <±10%. The technique was tested at different pulsed ion accelerators and ion diodes both with self-magnetic insulation (accelerating voltage of 200–250 kV, ion current density of 20–300 A/cm2) and external magnetic insulation of the electrons (400–500 kV, 200 A/cm2). The article presents a comparative analysis of two types of Faraday cups with magnetic cut-off of the electrons and with electric bias.

Keywords

Energy spectrumFaraday cupshigh-intensity pulsed ion beam compositionmagnetically insulated diodestime-of-flight
Type
Research Article
Information
Laser and Particle Beams , Volume 36 , Issue 2 , June 2018 , pp. 210 - 218
Copyright
Copyright © Cambridge University Press 2018 

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