Quench analysis of a novel compact superconducting cyclotron

26th International Cryogenic Engineering Conference & International Cryogenic Materials Conference 2016

材料科学;物理学

Ghosh, Sundeep^1 ; Gupta, Anjan Dutta^1 ; Dey, Malay Kanti^1 ; Pal, Gautam^1

Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata, India^1

关键词: Adiabatic conditions;    Critical location;    Design and analysis;    Initiation energy;    Magnetic analysis;    Maximum temperature rise;    Mutual inductance;    Parametric -analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/171/1/012111/pdf
DOI  :  10.1088/1757-899X/171/1/012111

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Design and analysis of a compact superconducting cyclotron dedicated for medical applications in the fields of nuclear medicine and therapy is presently being pursued in our organization. The novelty of this cyclotron lies in the fact that it does not consist of any iron-pole. The cyclotron magnet will be made of a set of NbTi coils comprising of solenoid and sector coils which are housed in two halves on either sides of the median plane. The average magnetic field is 1.74 T and the maximum extraction energy is 25 MeV, which is sufficient for production of 99mTc from Mo. In this paper, quench analyses of the coils have been discussed in details considering adiabatic condition. The entire cryostat magnet along with coils, formers and support links were modelled for the quench simulation. Self and mutual inductances of all the coils were obtained from a separate magnetic analysis and used in the simulation. Parametric analyses were carried out with different quench initiation energy at various critical locations on the coil surface. The corresponding quench behaviour, i.e. maximum temperature rise, maximum voltage and current decay in each of the coils have been studied.