Title :
Magnetic Field Mapping in the BESIII Solenoid
Author :
Yan, Jing ; Huang, Shike ; Hou, Zhilong ; Liu, Zhongxiu ; Zhao, Ling ; Zhu, Zian
Author_Institution :
Inst. of High Energy Phys., Chinese Acad. of Sci., Beijing, China
fDate :
6/1/2010 12:00:00 AM
Abstract :
The Beijing Spectrometer III (BESIII) superconducting solenoid magnet, which is running in the Beijing Electron Positron Collider II (BEPC-II), is an important part of BESIII and provides a 1 Tesla field in the main drift chamber. A 3-D mapping device with three 3-D probes was fabricated to measure the field components of , and . The mapping of the magnetic field of the BESIII superconducting solenoid magnet is presented, with the accelerator interaction region magnets located inside the BESIII solenoid excited to different current values. A set of polynomials, and a few trigonometric-Bessel terms are used to fit the data. The measurements and the functional model agree to 5 Gauss within the main drift chamber tracking volume at nominal field values.
Keywords :
magnetic fields; particle calorimetry; position sensitive particle detectors; proportional counters; solenoids; superconducting magnets; 3D mapping device; 3D probe; BESIII solenoid; Beijing Electron Positron Collider II; Beijing Spectrometer III; accelerator interaction region; drift chamber; magnetic field mapping; superconducting solenoid magnet; trigonometric-Bessel term; BESIII; field mapping; superconducting magnets;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2041437
