A Preliminary Consideration of Superconducting Rapid-Cycling Magnets for Muon Acceleration

Abstract

An extensive technology development program, Muon Accelerator Program (MAP) [1], aimed at the construction of the Muon Collider is being pursued at Fermilab. There are a number of very difficult accelerator technologies that need to be developed for the successful construction of the Muon Collider. The rapid-cycling synchrotrons for the muon acceleration constitute one of them. At the MAP proposal the normal-conducting magnets are currently considered for the construction of the rapidcycling synchrotrons. In this Note we outline possible application of High Temperature Superconductor (HTS) based magnets as the low power alternative to the proposed normal-conducting ones. II. Synchrotron parameters The µ + and µbeams after passing through the cooling section are accelerated using combination of linear and circular accelerators. The rapid-cycling synchrotrons are expected accelerate the µ + and µbeams in a wide energy range, starting at 63 GeV/beam for the precision measurement of the Higgs mass, and up to (1.5-3) TeV/beam for the particle physics research beyond the Standard Model.

On the feasibility of a pulsed 14 TeV c.m.e. muon collider in the LHC tunnel

“…The former are more economical. In spite of a number of specific issues, such as AC loss, cooling, quench detection and protection, field quality and material fatigue [17], SC ramping rates of ~1000 T/s are believed to be achievable in HTS-conductor based super ferric magnets [18][19][20]. Table 1 also includes acceleration parameters of the 30-450 GeV accelerator option "SPS" located in the SPS tunnel that accelerates the muons to the injection energy of the LHC size ring.…”