PAC2013 - List of Authors (Dhanaraj, N.)

Paper	Title	Page
THPBA14	Impact of Radiation on the Mu2e Production Solenoid Performance	1259
	V.V. Kashikhin, N. Dhanaraj, M.J. Lamm, N.V. Mokhov, V.S. Pronskikh Fermilab, Batavia, USA
	Funding: This work was supported in part by Fermi Research Alliance under the U.S. Department of Energy Contract DE-AC02-07CH11359. The Muon-to-Electron conversion experiment (Mu2e), under development at Fermilab, seeks to detect direct muon to electron conversion to provide evidence for processes violating muon and electron lepton number conservation that cannot be explained by the Standard Model of particle physics. The Mu2e magnet system consists of three large superconducting solenoids. The first in the chain of magnets is the Production Solenoid that collects and focuses pions, generated in interactions of 8-GeV proton beam with the tungsten target, and muons from pion decays by supplying a peak axial field of 4.6T and an axial field gradient of ~1T/m within 1.5m warm bore. The superconducting coils are protected from the secondary particle radiation by 50-cm thick heat and radiation shield made of bronze, which was optimized for the energy absorption and cost. Despite this optimization, a significant fraction of the particle radiation reaches the superconducting coils, creating the heat dissipation and changes in the material properties that in turn affect the magnet thermal and electrical performance. This paper describes the impact of radiation on the magnet cooling, stability and quench protection.

Paper

Title

Page

Impact of Radiation on the Mu2e Production Solenoid Performance

1259

V.V. Kashikhin, N. Dhanaraj, M.J. Lamm, N.V. Mokhov, V.S. Pronskikh
Fermilab, Batavia, USA

Funding: This work was supported in part by Fermi Research Alliance under the U.S. Department of Energy Contract DE-AC02-07CH11359.
The Muon-to-Electron conversion experiment (Mu2e), under development at Fermilab, seeks to detect direct muon to electron conversion to provide evidence for processes violating muon and electron lepton number conservation that cannot be explained by the Standard Model of particle physics. The Mu2e magnet system consists of three large superconducting solenoids. The first in the chain of magnets is the Production Solenoid that collects and focuses pions, generated in interactions of 8-GeV proton beam with the tungsten target, and muons from pion decays by supplying a peak axial field of 4.6T and an axial field gradient of ~1T/m within 1.5m warm bore. The superconducting coils are protected from the secondary particle radiation by 50-cm thick heat and radiation shield made of bronze, which was optimized for the energy absorption and cost. Despite this optimization, a significant fraction of the particle radiation reaches the superconducting coils, creating the heat dissipation and changes in the material properties that in turn affect the magnet thermal and electrical performance. This paper describes the impact of radiation on the magnet cooling, stability and quench protection.