Background: The present study has been an attempt to devise a new approach to cancer therapy so that the rate of success in treatment is increased to several thousands times more than that of the normal treatments.Materials & Methods: The present study utilized some tests through homo-energetic beam with the highest photo-electric absorption whose result was an increased output. In other words, the ratio of the tumor dose to that of sound tissue was over several thousand percents. Then a special device was designed and invented for this purpose, which is unique in the world. The device, along with its accessories, is well capable for photo-ELECTRON therapy with optimum efficiency. In this approach, without exposing the sound tissue to a fatal dose of the beam, the tumor absorbed dose is increased to hundreds of Grays, so that the malignant cells are damaged and the malignancy regression is reduced to a minimum. Moreover, the disadvantage of relatively sound tissue dose-and tumor dose-equality-damage, which occurs in conventional radio therapy, is reduced to a minimum and the tumor cells are fatally damaged.Findings: In designing and making this device along with relying on physical parameters in coordination with all points of photo-ELECTRON therapy performance, the other significant facilities are considered. All the technical points of remote controlling, simplicity and speed operation, ability of high maneuver, protection, patient apd technologist safety, low price, and ability to install in most cancer treatment centers are taken into account.Conclusion: It is expected that with this new device, some projects for modification and improvement of this system be pursued in future. All stages of national and international patent processes of this new system have already been completed successfully.

Background: Radiation therapy using ELECTRON beams is a promising method due to its physical dose distribution. Monte Carlo (MC) code is the best and most accurate technique for forespeaking the distribution of dose in radiation treatment of patients. Material and Methods: We report an MC simulation of a linac head and depth dose on central axis, along with profile calculations. The purpose of the present research is to carefully analyze the application of MC methods for the calculation of dosimetric parameters for ELECTRON beams with energies of 8– 14 MeV at a Siemens Primus linac. The principal components of the linac head were simulated using MCNPX code for different applicators. Results: The consequences of measurements and simulations revealed a good agreement. Gamma index values were below 1 for most points, for all energy values and all applicators in percent depth dose and dose profile computations. A number of states exhibited rather large gamma indices; these points were located at the tail of the percent depth dose graph; these points were less used in in radiotherapy. In the dose profile graph, gamma indices of most parts were below 1. The discrepancies between the simulation results and measurements in terms of Zmax, R90, R80 and R50 were insignificant. The results of Monte Carlo simulations showed a good agreement with the measurements. Conclusion: The software can be used for simulating ELECTRON modes of a Siemens Primus linac when direct experimental measurements are not feasible.

For neutrino scattering from polarized ELECTRON, the weak interaction term in the cross section is significantly suppressed by the polarized term. The magnetic moment term does not receive any correction from the ELECTRON polarization. Hence, the study of the magnetic moment of neutrinos through scattering from the polarized ELECTRON leads to a stronger bound on the neutrino magnetic moment compared with the unpolarized case. On the other hand, neutrinos which are electrically neutral can couple directly with photons in Noncommutative (NC) QED. In this paper, we calculate the NC QED corrections on this scattering are calculated. The phase difference between the NC term and the polarized weak interaction term is  p/2. Therefore, the NC term does not destroy the above suppression.

In this paper, the vacuum film deposition through ELECTRON beam evaporation has been reviewed and the effect of magnetic field on the operation of this system has been explained. Then, the magnetic field distribution due to magnetic components configuartion of a commercial evaporation source with 270-degree ELECTRON beam gun (manufactured by Sharif University Branch of ACECR), has been simulated by means of a finite element software, ANSYS. The simulation result was verified by comparing with the results obtained from measurement by Hall Effect sensor. Furthermore, by using the ray-tracing capability of the software, the capability of the magnetic lens of this device for ELECTRON beam focusing has been investigated. The predicted position of the ELECTRON beam spot on the target is in good agreement with experimental observations.

The development of ELECTRON beam applications motivates ELECTRON gun research. In addition to the beam energy and current, its quality also plays a significant role in the spread of ELECTRON guns. Herein, we present the design of an ELECTRON gun for use as an ELECTRON source in a linear accelerator with high beam current and quality. In this design, starting with the Pierce geometry, a stay-by-stay optimization based on the physics governed by the beam behavior has been carried out to control the emittance growth and get a beam of outstanding quality. In particular, non-linear transverse force, space charge effect, and spherical aberration are considered. This resulted in a threefold improvement in the beam quality as measured by the beam emittance.

A detailed analysis of ELECTRON trajectories in a realizable helical wiggler free ELECTRON laser with ion channel guiding. using ELECTRON (single particle dynamics) is presented. Conditions for stability of ELECTRON orbit have been investigated, calculations are made to illustrate. Conclusion shows that there are differences stable (unstable) condition(s) ELECTRON trajectories between ideal helical wiggler (2D) and realizable helical wiggler (3D).

The purpose of ELECTRON linear accelerator project in Institute for Research in Fundamental Sciences (IPM) has been to design and construct a S-band ELECTRON linear accelerator in such a way that all its parts be designed and built in Iran as much as possible. For more detailed evaluations and assurance, a cooper accelerating tube with the exact same specification of the main accelerating tube has also been constructed. After designing and constructing prototype tube, it was measured by applying slater perturbation method in resonance mode and steel method in non-resonance mode. Adaption of electric field in different modes for the accelerating tube after tuning with simulation values shows the accuracy of the applied construction and mesurment methods.