International Topical Meeting on Nuclear Research Applications and Utilization of Accelerators
|
|
|
AT/P5-12
PIN Photo-Diodes as Radiation Detectors in Accelerator Applications L. Mondragón Contreras1, F.J. Ramírez-Jiménez1, E.F. Aguilera-Reyes1, and C.E. Ojeda-Nava12 1Instituto Nacional de Investigaciones Nucleares Electronic Systems Department, Estado de México, Mexico Corresponding Author: fjrj@ieee.org We have been using PIN photo-diodes originally suited for light detection as radiation detectors in several applications: photon monitoring in X-ray machines in industrial and medical applications, X-ray spectroscopy for identification of radioactive materials and XRF, and charged particles spectroscopy. The versatility of these devices as radiation detectors has led us to apply it in several accelerator experiments. This work presents an overview of the results obtained in several experiments: the measurement of charged particles up to 12 MeV in a Tandem accelerator, the measurement of the Bremmstrahlung radiation obtained in an experimental electron accelerator in the range from 70 keV to 470 keV, the direct measurement of the intensity of the electron beam; also the application of PIN photo-diodes in the measurement of the intensity of photons in lineal accelerators used in radiotherapy up to 18 MeV. The front end conditioning electronics associated with the detectors is also described for every application: low noise charge sensitive preamplifiers and current amplifiers are used. The PIN diodes are a good choice for radiation detection in several accelerator applications with the advantage of a good position resolution due to its small size, goodsensitivity for different radiation fields and low cost, and can be used to build a wide variety of detection systems around accelerator experiments. |
