Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2007-06-25
2009-10-13
Epps, Georgia Y (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S2140RC, C313S528000
Reexamination Certificate
active
07601937
ABSTRACT:
A photon detector has a photocathode for the photon-induced triggering of measuring electrons. Spatial position information is supplied by an at least one-dimensional electron-detector pixel array. An electron optics unit serves for guiding the measuring electrons to the array. Each pixel (19) has an electronic converter unit (20) for converting an analog measuring signal of the pixel (19) into a digital measuring signal, which incorporates a discriminator for background suppression. An electronic post-processing unit (39) serves for processing the digital measuring signal. The converter unit (20) of each pixel (19) has at least one clock generator (36), as well as at least one counter (29, 30), which is in signal connection with the clock generator (36) and discriminator (27) for generation of a digital timing signal. The timing signal is such that it1from the number of clock cycles between a time-reference point and the moment (tmeasurement) of the arrival of an analog measuring signal not suppressed by the discriminator (27). The result is a photon detector in which not only the position information can be derived from the measuring signal but additionally also the information when the measuring signal was triggered at the given pixel.1Translator's note: This transition is based on an incomplete German-language sentence.
REFERENCES:
patent: 5461226 (1995-10-01), Nicoli et al.
patent: 2002/0175292 (2002-11-01), Whitehouse et al.
patent: 2004/0140432 (2004-07-01), Maldonado et al.
patent: 2004/0267488 (2004-12-01), Strommer
patent: 2006/0011849 (2006-01-01), Tseng et al.
patent: 69829769 (2006-03-01), None
Mark W. Lenox et al. “Coincidence Time Alignment for Planar Pixellated Positron Emission Tomography Etector Arrays”, 2001 IEEE Nuclear Science Symposium Conference Record, vol. 4, 2002 p. 1952-1954; (Particularly Section II).
C.D'Ambrosio, H. Leutz, “Hybrid Photon Detectors” Nuclear instruments & Methods in Physics Research section A, p. 463-498; (particularly Sections 3.1, 3.2, 3.3) Jan. 16, 2003.
C. D'Ambrosio et al, CERN PH/DT2 “Particle Detectors-Principles and Techniques,” Lecture 3b-Photo-Dection, CERN Academic Training Programme 2004/2005.
K. Wyllie et al., “Readout of the LHCb pixel hybrid photon detectors”; Nuclear Instruments and Methods in Physics Research, Section A 546 (2005) 86-92.
International Search Report for PCT/EP2007/005072; dated Aug. 2007.
Anton Gisela
Michel Thilo
Browdy and Neimark , P.L.L.C.
Epps Georgia Y
Friedrich-Alexander-Universität Erlangen-Nürnberg
Legasse Jr. Francis M
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