The effect of energy on the physical parameters of the electron beam in curtain accelerator: A simulation study

• Published in: Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2019-03, Vol.156, p.1-5
• Main Authors: Ghanbari, Sh, Kakuee, O., Akhoundi Khezrabad, M.S.
• Format: Article
• Language: English
• Subjects: CASINO; Computer simulation; Dosimetry; Electron beam (EB); Electron beams; Electron curtain accelerator; Energy; Energy dissipation; Energy distribution; Energy loss; MCNP4C; Monte Carlo simulation; Physical properties; Simulation; Temperature; Titanium; Titanium window
• ISSN: 0969-806X; 1879-0895
• DOI: 10.1016/j.radphyschem.2018.10.022

In electron curtain accelerator, the absorbed dose and its uniformity, electron energy loss through beam extract window and its lifetime are key factors for users. To facilitate design and application of curtain electron accelerator in 100–300 keV energy range, with the typical electron beam current (43 mA) and 13-µm-thick extract titanium window, the amount of doses immediately after the extract window, on the target position and at the depth of 1 mm of the target was obtained by MCNP4C code. The results of this simulation showed that with increasing energy, dose increases at indicated positions. It is shown that, by increase the incident beam energy from 100 keV to 300 keV, the temperature on the titanium extract window decreased from 104 to 42 degrees centigrade, respectively. Furthermore, lateral dose distribution and beam energy loss through the typical extract window was obtained based on CASINO numerical simulation package and compared with analytical results. •In electron curtain accelerator, the absorbed dose and its uniformity are key factors.•Electron Beam (EB) dosimetry was performed for energies of 100–300 keV using the MCNP4C.•The effect of extract window on energetic electron behavior was investigated.•The temperature rise was calculated based on the results of the deposited energy in the extract windows.