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Patent US5124551A successfully refreshed from Google Patents.
US5124551A
Expired / Lapsed
US
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Apparatus for measuring the temporal correlation of fundamental particles
Assignee: Hamamatsu Photonics KK
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Filing: 1990-09-06
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Granted: 1992-06-23
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Expires: 2010-09-06
Abstract
Abstract An apparatus for measuring the temporal correlation of fundamental particles such as photons, neutrons, X-rays or the like, comprising at least one deflector for sweeping the fundamental particles or images thereof in at least one direction, an aperture member having at least two apertures for time-divisionally extracting the swept fundamental particles or the images thereof, multiplication means, such as dynode groups or photomultipliers, for multiplying each of the extracted fundamental particles or the images thereof and a correlator for performing correlating arithmetic operations on the basis of each output signal from the multiplication means.
Inventors
- 👤 Tsuneyuki Urakami
- 👤 Yoshihiro Takiguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:58
CPC Classifications
G; G01; G01J; G01J9/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
67 words
An apparatus for measuring the temporal correlation of fundamental particles comprising: Sweep means for sweeping the fundamental particles or images thereof, extracting means for time-divisionally extracting the swept fundamental particles or the images thereof, multiplication means for multiplying each of the extracted fundamental particles or the images thereof, and Correlation means for performing correlating arithmetic operations on the basis of each output signal from said multiplication means.
Claim 2
Independent Claim
67 words
An apparatus for measuring the temporal correlation of fundamental particles comprising: Sweep means for sweeping the fundamental particles or images thereof, extracting means for time-divisionally extracting the swept fundamental particles or the images thereof, multiplication means for multiplying each of the extracted fundamental particles or the images thereof, and Correlation means for performing correlating arithmetic operations on the basis of each output signal from said multiplication means.
Claim 3
Dependent Claim
32 words
An apparatus as claimed in claim 1, wherein said extracting means comprises an aperture member having at least two apertures, the fundamental particles or images thereof being time-divisionally extracted through said apertures.
Claim 4
Dependent Claim
33 words
An apparatus as claimed in claim 1, wherein said multiplication means comprises dynode groups for respectively producing multiplied output signals from the image of said fundamental particles time-divisionally extracted through said extracting means.
Claim 5
Dependent Claim
33 words
An apparatus as claimed in claim 1, wherein said multiplication means comprises photomultiplier tubes for respectively producing multiplied output signals from the fundamental particles or images through time-divisionally extracted through said extracting means.
Claim 6
Independent Claim
87 words
An apparatus for measuring the temporal correlation of fundamental particles comprising: fundamental particle-to-electron converting means for converting fundamental particles to electrons, accelerating means for accelerating the electrons, focusing means for focusing the accelerated electrons, deflecting means for sweeping the electrons in at least one direction, extracting means having at least two apertures for extracting the swept electrons, multiplication means for multiplying the electrons extracted through said extracting means, and correlation means for performing correlating arithmetic operations on the basis of each output signal from said multiplication means.
Claim 7
Independent Claim
87 words
An apparatus for measuring the temporal correlation of fundamental particles comprising: fundamental particle-to-electron converting means for converting fundamental particles to electrons, accelerating means for accelerating the electrons, focusing means for focusing the accelerated electrons, deflecting means for sweeping the electrons in at least one direction, extracting means having at least two apertures for extracting the swept electrons, multiplication means for multiplying the electrons extracted through said extracting means, and correlation means for performing correlating arithmetic operations on the basis of each output signal from said multiplication means.
Claim 8
Dependent Claim
27 words
An apparatus as claimed in claim 5, wherein said multiplication means comprises at least two dynode groups for respectively multiplying the electrons extracted through said extracting means.
Claim 9
Dependent Claim
48 words
An apparatus as claimed in claim 5, wherein said multiplication means comprises a phosphor screen for converting electron images extracted from said apertures of said extracting means to the corresponding light images, and at least two photomultipliers for respectively producing multiplied output signals corresponding to the light images.
Claim 10
Independent Claim
103 words
An apparatus for measuring the temporal correlation of fundamental particles comprising: fundamental particle-to-electron converting means for converting fundamental particles to electrons; accelerating means for accelerating the electrons; focusing means for focusing the accelerated electrons; deflecting means for sweeping the electrons in at least one direction; extracting means having two apertures for extracting the swept electrons, the apertures being elongated along respective axes and relatively oriented to provide a variable distance between said axes; multiplication means for multiplying the electrons extracted through the extracting means; and correlation means for performing correlating arithmetic operations on the basis of each output signal from the multiplication means.
Claim 11
Independent Claim
103 words
An apparatus for measuring the temporal correlation of fundamental particles comprising: fundamental particle-to-electron converting means for converting fundamental particles to electrons; accelerating means for accelerating the electrons; focusing means for focusing the accelerated electrons; deflecting means for sweeping the electrons in at least one direction; extracting means having two apertures for extracting the swept electrons, the apertures being elongated along respective axes and relatively oriented to provide a variable distance between said axes; multiplication means for multiplying the electrons extracted through the extracting means; and correlation means for performing correlating arithmetic operations on the basis of each output signal from the multiplication means.
Claim 12
Dependent Claim
25 words
An apparatus as claimed in claim 8, wherein the multiplication means includes two dynode groups for respectively multiplying the electrons extracted through the extracting means.
Claim 13
Dependent Claim
45 words
An apparatus as claimed in claim 8, wherein the multiplication means includes a phosphor screen for converting electron images extracted from the apertures of the extracting means to corresponding light images; and two photomultipliers for respectively producing multiplied output signals corresponding to the light images.
Claim 14
Independent Claim
95 words
An apparatus for measuring the temporal correlation of fundamental particles comprising: fundamental particle-to-electron converting means for converting fundamental particles to electrons; accelerating means for accelerating the electrons; focusing means for focusing the accelerated electrons; deflecting means for sweeping the electrons in at least one direction; extracting means having two apertures for extracting the swept electrons, the apertures being elongated along axes paralleled with each other; multiplication means for multiplying the electrons extracted through the extracting means; and correlation means for performing correlating arithmetic operations on the basis of each output signal from the multiplication means.
Claim 15
Independent Claim
95 words
An apparatus for measuring the temporal correlation of fundamental particles comprising: fundamental particle-to-electron converting means for converting fundamental particles to electrons; accelerating means for accelerating the electrons; focusing means for focusing the accelerated electrons; deflecting means for sweeping the electrons in at least one direction; extracting means having two apertures for extracting the swept electrons, the apertures being elongated along axes paralleled with each other; multiplication means for multiplying the electrons extracted through the extracting means; and correlation means for performing correlating arithmetic operations on the basis of each output signal from the multiplication means.
Claim 16
Dependent Claim
25 words
An apparatus as claimed in claim 11, wherein the multiplication means includes two dynode groups for respectively multiplying the electrons extracted through the extracting means.
Claim 17
Dependent Claim
45 words
An apparatus as claimed in claim 11, wherein the multiplication means includes a phosphor screen for converting electron images extracted from the apertures of the extracting means to corresponding light images; and two photomultipliers for respectively producing multiplied output signals corresponding to the light images.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |