Field Quality Measurements and Analysis of the LARP Technology Quadrupole Models

Author

Velev, G.V. ; Bossert, R. ; Caspi, S. ; Chlachidze, G. ; DiMarco, J. ; Ferracin, P. ; Kashikhin, V.V. ; Lamm, M. ; Sabbi, G.L. ; Schlabach, P. ; Tartaglia, M. ; Tompkins, J.C. ; Zlobin, A.V.

Author_Institution

Fermilab, Batavia, IL

Volume

18

Issue

2

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

184

Lastpage

187

Abstract

One of the US-LHC accelerator research program goals is to develop and prove the design and technology of quadrupoles for an upgrade of the LHC Interaction Region (IR) inner triplets. Four 1-m long technology quadrupole models with a 90 mm bore and field gradient of 200 T/m based on similar coils and different mechanical structures have been developed. In this paper, we present the field quality measurements of the first several models performed at room temperature as well as at superfluid helium temperature in a wide field range. The measured field harmonics are compared to the calculated ones. The field quality of quadrupole models is compared with the NbTi quadrupoles recently produced at Fermilab for the first generation LHC IRs.

Keywords

accelerator magnets; magnetic field measurement; niobium alloys; superconducting magnets; tin alloys; titanium alloys; Nb₃Sn; NbTi; accelerator magnets; field harmonics; field quality measurements; quadrupoles; room temperature; superfluid helium temperature; temperature 293 K to 298 K; Magnetic field measurements; super-conducting accelerator magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2008.922272

Filename

4523024