Magnetic Mirror Structure for Testing Shell-Type Quadrupole Coils

Abstract

Abstract-This paper presents magnetic and mechanical designs and analyses of the quadrupole mirror structure to test single shell-type quadrupole coils. Several quadrupole coils made of different Nb 3 Sn strands, cable insulation and pole materials were tested using this structure at 4.5 and 1.9 K. The coils were instrumented with voltage taps, spot heaters, temperature sensors and strain gauges to study their mechanical and thermal properties and quench performance. The results of the quadrupole mirror model assembly and test are reported and discussed.

Fabrication of First 4-m Coils for the LARP MQXFA Quadrupole and Assembly in Mirror Structure

“…A mirror structure provides an effective method of testing the coil design features and fabrication process. Mirrors have been used in the past to test TQ, LQ, HQ and 11 Tesla Dipole coils [21][22][23][24]. The MQXFA program includes two mirror tests.…”

Test of Optimized 120-mm LARP $\hbox{Nb}_{3}\hbox{Sn}$ Quadrupole Coil Using Magnetic Mirror Structure

“…An efficient way to optimize coil parameters is to test them in a magnetic mirror structure [5], [6]. This allows individual coils to be tested under conditions similar to those of an actual magnet.…”