Thermal Analysis and Simulation of the Superconducting Magnet in the SpinQuest Experiment at Fermilab

The SpinQuest experiment at Fermilab aims to measure the Sivers asymmetry for the $\bar{u}$ and $\bar{d}$ sea quarks in the nucleon using the Drell-Yan process. The experiment will utilize a target system consisting of a 5T superconducting magnet, transversely polarized NH$_3$ and ND$_3$ targets, a $^4$He evaporation refrigerator, a 140 GHz microwave source and a large pumping system. The proposed beam intensity is 1.5$\times$10$^{12}$ of 120 GeV proton/sec. A quench simulation in the superconducting magnet is performed to determine the maximum intensity of the proton beam before the magnet transition to the resistive state. A GEANT based simulation is used to calculate the heat deposited in the magnet and the subsequent cooling processes are modeled using the COMSOL Multiphysics.