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Test results of LHC interaction regions quadrupoles produced by Fermilab

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23 Author(s)
Feher, S. ; FNAL Fermi Nat. Accel. Lab., Batavia, IL, USA ; Bossert, R. ; Carson, J. ; Chichili, D.R.
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The US-LHC Accelerator Project is responsible for the production of the Q2 optical elements of the final focus triplets in the LHC interaction regions. As part of this program Fermilab is in the process of manufacturing and testing cryostat assemblies (LQXB) containing two identical quadrupoles (MQXB) with a dipole corrector between them. The 5.5 m long Fermilab designed MQXB have a 70 mm aperture and operate in superfluid helium at 1.9 K with a peak field gradient of 215 T/m. This paper summarizes the test results of several production MQXB quadrupoles with emphasis on quench performance and alignment studies. Quench localization studies using quench antenna signals are also presented.

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Applied Superconductivity, IEEE Transactions on  (Volume:15 ,  Issue: 2 )