Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (7): 70501-070501.doi: 10.11889/j.0253-3219.2018.hjs.41.070501


Design of high temperature oven for refractory metallic ion beam production in high charge state ECR ion source

HUANG Wei1,2, QIAN Cheng2, SUN Liangting2, ZHANG Xuezhen2, CAO Yun2, LU Wang2, FENG Yucheng2, GUO Junwei2, FANG Xing2, LI Xixia2, ZHAO Hongwei1,2   

  1. 1. University of Science and Technology of China, Hefei 230027, China;
    2. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2016-09-24 Revised:2017-06-15 Online:2018-07-10 Published:2018-07-07
  • Supported by:
    Supported by the Ministry of Science and Technology "973" Special Project (No.2014CB845500), National Natural Science Foundation of China (No.11427904)

Abstract: [Background] The methods to produce metallic ions in high charge state electron cyclotron resonance (ECR) ion source are micro-oven method, sputtering method and metallic ion from volatile compounds (MIVOC) method and so on, amongst which the micro-oven method can help produce high intensity and high reliability ion beams. There are mainly two types of micro-oven in use, i.e. low temperature oven and high temperature oven. [Purpose] High temperature oven is especially used for metals with melting temperature over 1500℃, such as cobalt, titanium, vanadium, platinum, uranium, etc. [Methods] Using ANSYS, simulation and analysis of the temperature distribution on a tantalum crucible of high temperature oven, its thermal stress at high temperature and Ampere's force under the strong ECR ion source magnetic field working condition have been performed. [Results] According to the test, the deformation of tantalum crucible over 1800℃ after off-line test is consistent with the simulation in the ANSYS well, which puts forward an improved scheme. And the improved resistor heating micro-oven can remain stable at 1500℃ for 48 h and 1846℃ for 6 h in the off-line test. [Conclusion] The designed resistor heating micro-oven can be used in ECR ion source for the production of high intensity highly charged refractory metallic ion beams.

Key words: ECR ion source, Resister heating, High temperature oven, Metallic ions

CLC Number: 

  • TL56