This article is cited in 2 papers

Electrophysics, electron and ion beams, physics of accelerators

Efficiency improvement of an electron collector intended for electron cooling systems using a Wien filter

M. I. Bryzgunov, A. V. Ivanov, V. M. Panasyuk, V. V. Parkhomchuk, V. B. Reva

G I. Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk

Abstract: An efficient collector for high-voltage systems of electron cooling is presented. Its efficiency (ratio of the reflected electron current to the current of the main beam) is greatly improved by suppressing the reflected particle flux in the Wien filter. Secondary electrons deflect in crossed transverse electric and magnetic fields and are absorbed by a special receiver plate (secondary collector). The filter is designed so that the whole backward flow of electrons deflects even if the trajectory and main beam profile are distorted insignificantly. Experiments carried out on a special-purpose test bench show that such a filter raises the efficiency of the collector hundredfold (up to 10$^{-6}$).

Received: 21.09.2012

 English version: Technical Physics, 2013, 58:6, 911–918

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