Quench behavior of quadrupole model magnets for the LHC inner triplets at Fermilab

The US-LHC Accelerator Project is responsible for the design and production of inner triplet high gradient quadrupoles for installation in the LHC Int eraction Region. The quadrupoles are required to deliver a nominal field gr adient of 215T/m in a 70mm bore, and operate in superfluid helium. As part of the magnet development program, a series of am model magnets have been b uilt and tested at Fermilab, with each magnet being tested over several the rmal cycles. This paper summarizes the quench performance and analysis of t he model magnets tested, including quench training, and the ramp rate and t emperature dependence of the magnet quench current.