Diagnostics and electron-optics of a high current electron beam in the Tandem free electron laser - status report

A. Arensburg*, A. Abramovich, D. Chairman, M. Cohen, M. Draznin, A. Gover, H. Kleinman, Y. Pinhasi, J. S. Sokolowski, V. Shterngartz, I. M. Yakover, L. A. Levin, O. Shahal, A. Rosenberg, J. Shiloh, al et al

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations

Abstract

The electron optical design and the installation of all the Israeli Tandem FEL components, including 8 quadrupole lenses, 4 steering coils and a computerized control system, are reportedly completed. All were assembled into the high voltage terminal and controlled by a fiber optic link. Diagnostic means based on fluorescent screens and compact CCD camera cards were installed at the end of the e-gun injector. The pepper pot technique was used to study the electron beam. The experiment consists of passing the 0.5 A beam through a thin plate which is perforated with an array of 0.5 mm holes. The spots produced on a fluorescent screen placed 90 cm from the pepper pot were recorded with a CCD camera and a frame grabber. The measured normalized emittance is lower than 10πmm mrad which is quite close to the technical limit of dispenser cathode e-guns.

Original languageEnglish
Pages (from-to)ABS1-ABS3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume375
Issue number1-3
DOIs
StatePublished - 1996
EventProceedings of the 1995 17th International Free Electron Laser Conference - New York, NY, USA
Duration: 21 Aug 199525 Aug 1995

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