Multianode Photomultiplier for Detection and Localization of Low Light Level Events

Boutot, J. P.; Lavoute, P.; Eschard, G.

doi:10.1109/tns.1987.4337382

Cited by 25 publications

(4 citation statements)

References 10 publications

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“…The intensity ratio variation of the most sensitive channel, C ð4;5Þ , in the central region to the lowest one, C ð1;8Þ , at the upper corner part, is 5.4. This is in accordance with other measurements 22) performed employing a very difficult technique using a small-diameter fiber-optic cable illuminating each pixel one by one, and obtaining a ratio of 5.0.…”

Section: Resultssupporting

confidence: 92%

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Multiposition Multipass Thomson Scattering Diagnostic for Tokamak NOVA-UNICAMP

Monteiro¹,

Machida

2005

Jpn. J. Appl. Phys.

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In this article, the use of an 8×8-matrix independent 10-stage dynode multichannel photomultiplier for multipass Thomson scattering is described. Light from a pulsed ruby laser is irradiated 12 times in the central region of plasma using the resonator cavity of a multipass system, and integrated scattered light is detected for the first time using the multichannel photomultiplier XP1752 from Philips. The simultaneous measurements of electron temperature and density at four spatial positions, which can be extended by increasing the numbers of Analog-to-Digital Converter (ADC) channels and signal output windows, have been performed throughout full discharge by a shot-to-shot procedure. An electron temperature T e of 50 eV and a density n e of 5×1012 cm-3 were measured for the tokamak NOVA-UNICAMP. Because of the use of a low-power ruby laser (typically 1 J) and scattered light amplification using a multipass system, the level of stray light was kept low and absolute density measurements were made possible by nitrogen Rayleigh scattering.

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Section: Resultssupporting

confidence: 92%

“…The influence of one channel on the adjacent channels appears as the small area surrounding the characteristic area at the bottom part of the signal, therefore, the cross talk is the ratio of the area of the influenced signal, A1, to the characteristic signal, A2, 22) as can be seen in Fig. 8.…”

Section: Resultsmentioning

confidence: 99%

Multiposition Multipass Thomson Scattering Diagnostic for Tokamak NOVA-UNICAMP

Monteiro¹,

Machida

2005

Jpn. J. Appl. Phys.

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“…Other test results on phototubes reported in [69, 70,71] are for multichannel photomultiplier tubes (MC-PMT's) Philips-Photonis XP1722 (or XP4722), XP1702 (or XP4702) [72], XP1704 (or 4704), and XP1724 (or XP4724).…”

Section: Transducers That Generate An Electrical Signal Proportional mentioning

confidence: 99%

Funding 3d-Cbs: Changing the Role of Pet for Cancer Screening

Crosetto¹

2010

Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications

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Figure 0-1. (Cover illustration). The innovation of this project, compared to current medical imaging devices, lies in its elimination of two bottlenecks and two "brick walls" in the electronics, allowing a much lower radiation dose to the patient and the extension of the field of view of the detector from about 20 cm to over 150 cm. The result is that the radiation exposure of the patient, as well as the scanning time and the cost per examination are greatly reduced, while the quality of the image is greatly improved. An excerpt of the project can be found in the PREFACE; the scope of the book is described in Section 1.2; the advantages are described in Section 14, Section 1.3, and shown in Figure 14-1 and Figure 1-3. The elimination of the bottleneck on input is described in Section 14.7.1.3; the elimination of the bottleneck on output is described in Section 14.7.2.4. The elimination of the brick wall on the detector boundaries is described in Section 13.3.8, and its implementation is shown in Figure 15-7; and the elimination of the brick wall on the coincidence detection is described in Section 14.7.2, and in Section 13.3.14. Cover illustration composed by Laurie Adams 400 + times improved PET efficiency for lower-dose radiation, lower-cost cancer screening

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“…As características distintas deste diagnóstico nesse trabalho de tese consistiram na complementação de um sistema de multipassagem para o feixe do laser de rubi [Kant99], e a utilização de um novo detetor multicanal [Bout87,Erik87], o XP 1752 da Philips, que é uma matriz 8x8, totalizando 64 fotomultiplicadoras independentes, e que ainda não havia sido testado na realização do espalhamento Thomson multiespacial.…”

Section: Capítulo 1 Introduçãounclassified

Espalhamento Thomson multipassagem no Tokamak Nova-UNICAMP

Monteiro¹,

Machida²

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Ao meu orientador, Prof. Dr. Munemasa Machida, pela confiança em mim depositada desde a Iniciação Científica, pelo incentivo e ajuda na elucidação de problemas pertinentes aos trabalhos realizados, durante todo este período de convivência.Ao André Máscia Daltrini, pelas discussões úteis a respeito dos experimentos, e ajuda na operação da máquina. Ao Celso Ossamu Kaminiskikawarara, pela ajuda nos experimentos de Langmuir. Ao Douglas Cioban pelas ajudas técnicas prestadas. Ao Henrique Dante de Almeida pela conversão do sistema CAMAC para LINUX.

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Multianode Photomultiplier for Detection and Localization of Low Light Level Events

Cited by 25 publications

References 10 publications

Multiposition Multipass Thomson Scattering Diagnostic for Tokamak NOVA-UNICAMP

Multiposition Multipass Thomson Scattering Diagnostic for Tokamak NOVA-UNICAMP

Funding 3d-Cbs: Changing the Role of Pet for Cancer Screening

Espalhamento Thomson multipassagem no Tokamak Nova-UNICAMP

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