ETA-II beam brightness measurement

Author

Paul, A.C. ; Allen, S.L. ; Chambers, F.W. ; Chen, Y.-J. ; Deadrick, F.J. ; Turner, W.C.

Author_Institution

Lawrence Livermore Nat. Lab., CaIifornia Univ., Livermore, CA, USA

fYear

1991

fDate

6-9 May 1991

Firstpage

3106

Abstract

ETA-II resumed operation in the Fall of 1990 with the injector and first two ten-cell accelerating blocks and nominal electron beam parameters of 1500 A, 2.5 MeV, and 70-ns pulse width at 1 Hz PRF. The beam brightness diagnostics consisted of a Cerenkov foil view port and a pepper-pot emittance diagnostic. The Cerenkov foil experiment was used to determine the beam energy at the accelerator exit. The pepper-pot emittance diagnostic was used to determine the whole beam brightness. The brightness as a function of beam radius and time within the beam pulse was also measured. The brightness is defined as the ratio of the beam current within a given radius to the normalized four-dimensional volume occupied by particles within that radius.<>

Keywords

beam handling equipment; particle beam diagnostics; Cerenkov foil view port; ETA-II beam brightness; beam brightness diagnostics; beam current; beam pulse; electron beam parameters; four-dimensional volume; injector; pepper-pot emittance diagnostic; ten-cell accelerating blocks; Brightness; Laboratories; Magnetic field measurement; Particle beam measurements; Particle beams; Phosphors; Pulse measurements; Streaming media; TV; Time of arrival estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE

Conference_Location

San Francisco, CA, USA

Print_ISBN

0-7803-0135-8

Type

conf

DOI

10.1109/PAC.1991.165202

Filename

165202