Reduction of contaminants originating from primary beam by improving the beam stoppers in GARIS-II
نویسندگان
چکیده
Two independent beam stoppers have been developed for improving the separation of gas-filled recoil ion separator GARIS-II. Performance evaluation these supplemental was performed by using 208Pb (18O,3n)223Th reaction. A160-fold enhancement signal-to-noise ratio at GARIS-II focal plane observed.
منابع مشابه
Assessment of Neutron Contamination Originating from the Presence of Wedge and Block in Photon Beam Radiotherapy
Background: One of the main causes of induction of secondary cancer in radiation therapy is neutron contamination received by patients during treatment.Objective: In the present study the impact of wedge and block on neutron contamination production is investigated. The evaluations are conducted for a 15 MV Siemens Primus linear accelerator. Methods: Simulations were performed using MCNPX Monte...
متن کاملassessment of neutron contamination originating from the presence of wedge and block in photon beam radiotherapy
background: one of the main causes of induction of secondary cancer in radiation therapy is neutron contamination received by patients during treatment. objective: in the present study the impact of wedge and block on neutron contamination production is investigated. the evaluations are conducted for a 15 mv siemens primus linear accelerator. methods: simulations were performed using mcnpx mon...
متن کاملstudy of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
Improving the Nutritional Value of Sunflower Meal by Electron Beam and Gamma Ray Irradiations
This research was performed to compare electron beam (EB) and gamma ray (GR) treatments at doses of 25, 50 and 75 kilo Gray (kGy) on ruminal degradation kinetics and in vitro digestibility of sunflower meal (SFM). Ionizing radiations of EB and GR had significant effects )P
متن کاملSimulation of the beam halo from the beam-beam interaction.
SLAC-PUB-6379 October 1993 W Simulation of the Beam Halo from the Beam-Beam Interaction T. Chen, J. Irwin and R. Siemannt Stanford Linear Accelerator Center, Stanford University, Stanford, CA94309 Abstract: A new technique for simulating the beam halo in circular e+ecolliders is introduced, tested, and applied. Amplitude space is divided into core and halo regions, and only halo particles are t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research
سال: 2021
ISSN: ['1872-9576', '0168-9002']
DOI: https://doi.org/10.1016/j.nima.2020.164996