EP-1684 Radiation isocontour levels for shielding considerations of the Varian Halcyon linear accelerator
نویسندگان
چکیده
منابع مشابه
Radiation Calculations and Shielding Considerations for the Design of the next Linear Collider
Introduction For over 25 years, colliding-beam machines have been used as primary instruments for studying elementary particle physics at high energies. Very important discoveries have been made at both hadron-hadron and electron-positron facilities and our ability to utilize these two different, but complementary, instruments has become essential in allowing us to work towards a better underst...
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چکیده هدف اصلی از طراحی لرزه ای تامین ایمنی جانی در هنگام وقوع زلزله و تعمیر پذیر بودن سازه خسارت دیده، پس از وقوع زلزله است. تجربه زلزله های اخیر نشان داده است که ساختمان های طراحی شده با آیین نامه های مبتنی بر نیرو از نظر محدود نمودن خسارت وارده بر سازه دقت لازم را ندارند. این امر سبب پیدایش نسل جدید آیین نامه های مبتنی بر عملکرد شده است. در این آیین نامه ها بر اساس تغییرشکل های غیرارتجاعی ...
15 صفحه اولHelical tomotherapy radiation leakage and shielding considerations.
Leakage radiation and room shielding considerations increase significantly for intensity-modulated radiation therapy (IMRT) treatments due to the increased beam-on time to deliver modulated fields. Tomotherapy, with its slice by slice approach to IMRT, further exacerbates this increase. Accordingly, additional shielding is used in tomotherapy machines to reduce unwanted radiation. The competing...
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Radiotherapy using linear accelerators is known as an effective modality for cancer treatment. The photons energy of treatment beams significantly affect the dose distribution. Therefore, it is important to accurately evaluate the photon energy spectra. In this study, MCNPX Monte Carlo code (version 2.6.0) was used to simulate an 18 MV photon beam of a Varian 2100C/D linear accelerator. By matc...
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The purpose of this review is to discuss particular shielding problems related to highenergy machines that are not covered in NCRP report No. 49. These include calculating the dose at the end of a maze due to neutrons and capture rays, consideration of high-energy direct-shielded doors, and laminated primary shielding. The impact of special procedures such as IMRT, TBI, and SRS will also be dis...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2019
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(19)32104-8