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New position sensitive photomultiplier tubes for high energy physics and nuclear medical applications

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5 Author(s)
Suzuki, S. ; Hamamatsu Photonics KK, Sizuoka, Japan ; Matsushita, T. ; Suzuki, T. ; Kimura, S.
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Position-sensitive photomultiplier tubes with fine-mesh-structured dynodes and discrete-anode-array configurations are discussed. One photomultiplier tube, constructed with 88 multianodes, has a spatial resolution of less than 2.6 mm FWHM in a magnetic field with a density of 500-2000 G; it is being used as a photodetector for high-energy physics applications in high-magnetic-field environments. Another type of multianode photomultiplier tube that has been developed functions as a high-spatial-resolution detector for positron-emission tomography (PET) and scintillation-system hodoscopes. By applying additional electrofocusing electrodes to this tube, an intrinsic spatial resolution of 1.4 mm FWHM without the magnetic field can be obtained.

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Nuclear Science, IEEE Transactions on  (Volume:35 ,  Issue: 1 )