High accuracy field integral measurement for TJNAF beam energy determination

Author

Kircher, F. ; Fabre, J. ; Gougnaud, F. ; Humeau, M. ; Leboeuf, R. ; Lussignol, Y. ; Marroncle, J. ; Matichard, G. ; Marchand, D. ; Sellier, J.C. ; Vernin, P. ; Veyssiere, C.

Author_Institution

CEA, Centre d´Etudes Nucleaires de Saclay, Gif-sur-Yvette, France

Volume

10

Issue

1

fYear

2000

fDate

3/1/2000 12:00:00 AM

Firstpage

1427

Lastpage

1430

Abstract

The determination of the beam energy in the experimental hall A of TJNAF (previously CEBAF) accelerator is done through a very accurate measurement of the field integral of a reference dipole magnet, electrically connected in series with the bending magnets transporting the beam from the accelerator to the experimental area. A new method is used to determine the field integral; this method is described, as well as the calibrations done in the laboratory. Finally, the goal to reach an accuracy of the field integral on the order of 10/sup -5/ has been reached, as it is shown by comparing the results of the beam energy determination obtained on the accelerator with this method to results obtained by other independant methods.

Keywords

accelerator magnets; beam handling techniques; calibration; magnetic field measurement; CEBAF; TJNAF accelerator; TJNAF beam energy; arc dipole; bending magnets; field integral measurement; reference dipole; reference dipole magnet; Amplifiers; Coils; Energy measurement; Integral equations; Large Hadron Collider; Magnetic field measurement; Position measurement; Wire; Wounds;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.828507

Filename

828507