| Paper |
Title |
Page |
| MOP013 |
Low-Intensity, Pulsed-Beam Generation System Using the OPU Linac
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58 |
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- R. Taniguchi, T. Kojima, S. Okuda, Y. Tanaka
Osaka Prefecture University, Sakai
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An ultra low intensity pulsed electron beam generation system has been developed, which consists of an electron linear accelerator (linac), highly sensitive beam current monitors and beam profile monitors. The beam current has been attenuated to be about ten orders of magnitude weaker than the ordinary beam current by using several methods, e.g. the reduction of the cathode emission in an injector and the use of a narrow slit. The minimum beam charge so far obtained has been estimated to be about several attocoulomb in one beam macropulse. The beam from a linac is controllable, collimated and synchronized with the trigger signal of the linac. The features are much advantageous compared with those of β-rays from radioisotopes which have been used in low intensity beam irradiation experiments. The final goal of this work is to generate a single electron beam.
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| TUP018 |
Low-Intensity Electron Beam Monitoring and Beam Applications at OPU Linac
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286 |
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- S. Okuda, T. Kojima, Y. Tanaka, R. Taniguchi
Osaka Prefecture University, Sakai
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Low intensity beams are generated with a 18 MeV S-band electron linac at Osaka Prefecture University (OPU). The minimum charge of electrons in a pulsed beam has been estimated to be about several attocoulomb. In order to measure the intensity and the profile of the beams with thermoluminescence dosimeters and two-dimensional radiation dosimeters, the characteristics of the dosimeters have been investigated by using the electron beams. For the charge of the beam above one picocoulomb, charge-sensitive type beam monitors have been used. The linear relation between the output signal of the dosimeter and the irradiation dose of the beam has been obtained. From the results it has been found that these dosimeters can be applied to monitoring the low intensity electron beam. The beam applications under preparation are presented.
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