A new type of beam detector

Abstract

A new type of beam current detector includes a housing, a metal plate, a scintillator panel and a CCD camera. The casing is provided with a detection cavity, and the two sides of the detection cavity are respectively provided with a beam inflow port and a beam outflow port for the beam to enter and exit, the beam inflow port and the beam outflow port are located on the same straight line, the detection cavity The upper end is provided with a detection window; the metal plate is hinged on the housing through a rotating shaft, the metal plate is located between the beam inflow port and the beam out port, and the metal plate can be in the first position of blocking the beam flow and avoiding the beam flow The metal plate is grounded through the galvanometer; the scintillator panel is fixed on one side of the metal plate; the CCD camera is installed outside the detection window and is used to detect the light emitted by the scintillator panel and passing through the detection window. The invention has rich measurement functions, low cost, and is easy to produce in batches. Several detectors can be installed on the beam line to monitor the beam quality of the entire beam line, and it is convenient to use.

Description

technical field [0001] The invention relates to a novel beam current detector. Background technique [0002] Proton heavy ion radiation therapy for cancer is more accurate than conventional radiation therapy and causes less damage to normal cells. Its therapeutic devices and related technologies have developed rapidly in recent decades. In order to ensure high beam quality, multiple detectors are often arranged on the beam transport line to detect beam parameters, and feed back the data to the control system for corresponding adjustments to obtain beam current. [0003] Existing detectors for beam diagnosis generally include Faraday cups, ionization chambers, position detectors, etc., which are used to measure parameters such as beam intensity, energy, position, shape, and emittance. However, although the cost of the Faraday cup is relatively low, the test function is single. Although the ionization chamber and the position detector have rich functions, they are difficult...

AI Technical Summary

Problems solved by technology

However, although the cost of the Faraday cup is relatively low, the test function is single. Although the ionization chamber and the position detector have rich functions, the manufacturing is difficult, the cost is high, and the operation is complicated, which requires high ability and quality of the user.

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