Time resolved emittance measurement in the University of Maryland Electron Ring

Author

Walter, M. ; Lamb, D. ; Bernal, Sandra ; Haber, I. ; Kishek, R.A. ; Li, H. ; Quinn, B. ; Snowel, M. ; Valfells, A. ; Reiser, M. ; O´Shea, P.G.

Author_Institution

Inst. for Res. in Electron. & Appl. Phys., Maryland Univ., College Park, MD, USA

Volume

4

fYear

2003

fDate

12-16 May 2003

Firstpage

2574

Abstract

Initial experimental results are presented for measurements of the emittance of an electron beam in the University of Maryland Electron Ring (UMER). Two independent sets of slit-collector systems are used to measure the emittance in the vertical and horizontal directions respectively. Results are then compared to the time integrated emittance measurements obtained from a pepperpot. The UMER electron beam has an energy of 10 keV, with as much as 100 mA of current, and pulse length of 100 ns. The beam is confined by a periodic lattice of focusing/defocusing quadrupole magnets at 16 cm intervals. Beam steering is achieved with dipole magnets at 32 cm intervals and additional small steering dipoles as needed.

Keywords

accelerator magnets; electron beam focusing; electron ring accelerators; UMER; University of Maryland Electron Ring; additional small steering dipoles; beam steering; defocusing quadrupole magnets; dipole magnets; electron beam; focusing quadrupole magnets; horizontal directions; pepperpot; periodic lattice; slit-collector systems; time integrated emittance measurements; time resolved emittance measurement; vertical directions; Beam steering; Circuit noise; Electron beams; Electron emission; Magnets; Physics; Pulse measurements; Time measurement; Wire; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289193

Filename

1289193