Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (10): 100201-100201.doi: 10.11889/j.0253-3219.2018.hjs.41.100201

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

A calibration method of terminal voltage on the megavolt low energy accelerator

WANG Zesong1, ZHANG Rui2, TIAN Canxin1, WANG Zhenguo3, FU Dejun3   

  1. 1 School of Physics and Technology, Lingnan Normal University, Zhanjiang 524048, China;
    2 College of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China;
    3 School of Physics and Technology, Wuhan University, Wuhan 430072, China
  • Received:2018-06-19 Revised:2018-07-12 Online:2018-10-10 Published:2018-10-16
  • Supported by:
    Supported by Fundamental Research Project of Shenzhen Scientific and Technological Innovation Committee (No.JCYJ20170818112901473), Natural Science Research Project of Lingnan Normal University (No.LZL1809)

Abstract: [Background] Due to the influences from durable years, work environment and replacement parts of the dual megavolt tandem accelerator, the terminal voltage output is not accurate enough to ensure the stability of the incident ion energy depends on the terminal voltage acceleration.[Purpose] This study aims to calibrate terminal voltage output of megavolt accelerator for ion-beam materials characterization.[Methods] Taking the 2×1.7 MV accelerator as an example, the calibration method on the terminal voltage is making use of the non-Ruhterford backscattering spectrometry (Non-RBS) spectrum of 12C(p,p)12C, and the proton beam was irradiated vertically on the surface of high-purity graphite target, which was characterized by the scattering peak of the isolated resonance at around 1 750 keV.[Results] Combined with multichannel analyzer (MCA) and SIMNRA 6.05 code, the threshold energy of the resonance scattering reaction between incident proton and the surface of graphite target can be detected as (1 744±2) keV. The actual terminal voltage was extrapolated and the error after calibration also was analyzed.[Conclusion] This calibration method on the terminal voltage provides a reference for megavolt Van der Graff accelerator or tandem accelerator.

Key words: Accelerator, Terminal voltage, Non-RBS, Energy calibration

CLC Number: 

  • TL99