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Improving safety around a linear accelerator

A linear accelerator and pre-acceleration technology, used in linear accelerators, instruments, scientific instruments, etc., can solve problems such as violations of radiation protection regulations, and achieve the effect of minimizing construction costs and reducing possibilities

Inactive Publication Date: 2019-10-08
ADVANCED ONCOLOGY THERAPEUTICS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, radiation monitors can only detect serious violations of radiation protection regulations far beyond the limits of non-regulated areas
[0011] Personal dose identification generally has the disadvantage that it can only be accessed and read after the dose has been accumulated

Method used

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  • Improving safety around a linear accelerator
  • Improving safety around a linear accelerator
  • Improving safety around a linear accelerator

Examples

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Embodiment Construction

[0088] refer to figure 1 , an exemplary proton radiation therapy system comprising: a proton source 10 arranged to generate a pulsed beam of protons; and a linear accelerator train 20 arranged to accelerate the pulsed beam to an energy range suitable for treatment, up to a maximum, eg 250 MeV.

[0089] Acceleration is achieved in stages including a first pre-acceleration stage or buncher 30 in which the pulsed beam is accelerated to an energy suitable for insertion of the beam into the first accelerating structure of the linear accelerator train 20 . The pre-acceleration stage 30 may also perform beam focusing of the beam pulses.

[0090] In a particular embodiment, the pre-accelerator stage is a radio frequency quadrupole (RFQ). In a particular embodiment, the beam at the input of the RFQ may be a 5 microsecond long pulse of continuous beam. Within this 5 μs window, the particles can spread out evenly. In RFQ, particles are decelerated or accelerated by the action of elect...

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Abstract

A linear accelerator system comprising a source (10) arranged to produce a pulsed beam of charged particles, a linear accelerator string (20) arranged to accelerate the pulsed beam up to a predetermined range of energies, and a pre-acceleration stage (30) interposed between the source (10) and the linear accelerator string (20) and arranged to accelerate the pulsed beam up to an energy suitable for beam insertion into the linear accelerator string (20) and perform bunching of the pulsed beam. An average current detector (40) is arranged to measure an average current in the pulsed beam, the average current detector comprising at least one non-interceptive sensor (41, 42, 43) placed at an input side of the linear accelerator string (20), downstream of the pre-acceleration stage (30), the sensor being responsive to the pulsed beam passing thereby.

Description

technical field [0001] The present invention generally relates to a linear accelerator. Linear accelerators can be used in radiation therapy, industry, research or academic institutions. Background technique [0002] Linear accelerators are used in radiation therapy to accelerate particles, specifically electrons or protons, to sufficient energy so that they can travel deep into tissue to irradiate and energize tumors. In the case of electrons, they can optionally be directed onto a large atomic number target material to generate high-energy X-rays, which themselves are then used to treat deep-seated tumors. [0003] Typically, particles are generated from a source (e.g., an ion plasma source or an Electron Cyclotron Resonance Ion Source (ECRIS) for protons, an electron gun for electrons) and fired into a linear accelerator complex at In the linac complex, it is accelerated to the desired energy by a high frequency radio frequency (RF) field. Generally, acceleration is pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H9/00H05H7/22G01T1/29
CPCH05H9/00H05H7/22G01T1/29H05H9/041H05H9/044H05H2007/008H05H2277/113A61N5/1067A61N2005/1087G01R19/0061
Inventor M·瑟夫M·卡尔达拉R·莫瑟H·保韦蒂奇K·斯塔奇拉M·琼塔
Owner ADVANCED ONCOLOGY THERAPEUTICS PLC
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