WO2004112081A1 - 電子増倍管 - Google Patents
電子増倍管 Download PDFInfo
- Publication number
- WO2004112081A1 WO2004112081A1 PCT/JP2004/008442 JP2004008442W WO2004112081A1 WO 2004112081 A1 WO2004112081 A1 WO 2004112081A1 JP 2004008442 W JP2004008442 W JP 2004008442W WO 2004112081 A1 WO2004112081 A1 WO 2004112081A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dynode
- insulating
- dynodes
- electron multiplier
- venetian blind
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
- H01J43/06—Electrode arrangements
- H01J43/18—Electrode arrangements using essentially more than one dynode
- H01J43/22—Dynodes consisting of electron-permeable material, e.g. foil, grid, tube, venetian blind
Definitions
- the present invention relates to an electron multiplier including a dynode section in which a plurality of dynodes are arranged in a multi-stage in a stacked state.
- a dynode part of an electron multiplier As a dynode part of an electron multiplier, a dynode part in which a plurality of dynodes are arranged in multiple layers in a stacked state is generally known (for example, see Patent Document 1).
- a plurality of stem pins for supplying a control voltage to each dynode are fixed to the stem plate constituting the vacuum vessel in a penetrating state.
- a plurality of dynodes are supported in multiple stages in parallel with each other by fixing the tips of the dynodes to the periphery of each dynode (for example, see Patent Document 2).
- Patent Document 1 JP-A-2000-3693 (Fig. 1)
- Patent Document 2 Japanese Patent Application Laid-Open No. 8-7825 (FIG. 1)
- an object of the present invention is to provide an electron multiplier including a dynode part having excellent vibration resistance.
- An electron multiplier is an electron multiplier including a plurality of dynodes arranged in multiple layers in a stacked state in which a plurality of dynodes are insulated from each other in a vacuum vessel.
- the respective insulating plates are alternately stacked in a state of being fitted or engaged with the column, and a locking member is fixed to the tip of the column, and each dynode and each insulating spacer are integrally supported by the column. It is characterized by the following.
- each dynode and each insulating plate of the dynode portion are fitted or engaged with a support provided on the stem plate constituting the vacuum vessel. Since the dynode and each insulating plate are integrally and firmly supported by the pillar, each dynode and each insulating plate do not inadvertently shift laterally due to acceleration or impact, and the dynode part exhibits excellent vibration resistance. .
- each dynode and each insulating plate of the dynode part are fitted or engaged with the support provided on the stem plate constituting the vacuum vessel.
- each dynode and each insulating plate are integrally and firmly supported by the pillars, so that the dynodes that do not inadvertently slide sideways due to vibration or shock are excellent in vibration resistance. Can be demonstrated.
- FIG. 1 is a longitudinal sectional end view showing an internal structure of an electron multiplier according to an embodiment of the present invention.
- FIG. 2 is a perspective view of main constituent members of a dynode unit shown in FIG. 1.
- FIG. 1 is a longitudinal end view showing an internal structure of an electron multiplier according to one embodiment
- FIG. 2 is a perspective view of main components of a dynode part shown in FIG.
- a light-receiving surface plate 2 is hermetically fixed to an opening at one end of a cylindrical side tube 1, and is provided at an opening at the other end. It is configured as a head-on type PMT (photomultiplier tube) containing a focus electrode 4, a dynode part 5, an anode 6, etc. in a vacuum vessel with a stem plate 3 fixed in an airtight manner. .
- PMT photomultiplier tube
- the side tube 1 is composed of a Kovar metal tube having flanges formed at both ends, a peripheral portion of the light receiving surface plate 2 is thermally fused to one end flange, and a stem plate is mounted to the other end flange.
- the flange 3 is welded.
- the light receiving surface plate 2 is made of, for example, circular Kovar glass having a thickness of about 0.7 mm, and a photoelectric surface (not shown) is formed on an inner surface of a portion facing the light incident window. .
- the material of the light receiving face plate 2 can be appropriately changed to synthetic quartz, UV glass, borosilicate glass, or the like according to required light transmission characteristics.
- the stem plate 3 is made of Kovar metal, and is formed in a dish shape in which an insulating sealing material 3A made of borosilicate glass is filled.
- a plurality of stem pins penetrate the stem plate 3 airtightly and are connected to the dynodes of the dynode unit 5.
- An exhaust pipe 8 for evacuating the inside of the vacuum vessel is airtightly fitted and fixed to the center of the stem plate 3, and its outer end is closed.
- each support 9 is air-tightly mounted on the insulating sealing material 3A with its base end portion penetrating through the stem plate 3.
- An insulating pipe 10 is fitted to each of the columns 9.
- the focus electrode 4 is formed in a rectangular cylindrical shape having a flange portion 4B in which a mounting hole 4A to be fitted to each column 9 is formed. It is located inside the side tube 1 for
- the dynode unit 5 is configured such that, for example, the first dynode is a Venetian blind dynode.
- the dynodes of the second and subsequent stages, for example, the fourteenth stage, are formed of metal channel dynodes 5B.
- the Venetian blind dynode 5A is cut at an angle of approximately 45 degrees from a substrate 5A2 in which mounting holes 5A1 to be fitted into each insulating pipe 10 (see FIG. 1) are formed at four corners. It has a plurality of raised louver-shaped electrode elements 5A3. Each of the electrode elements 5A3 is adjacent to each other in parallel and inclined in the same direction, and has a blind appearance as a whole.
- each electrode element 5A3 facing the light-receiving surface plate 2 receives photoelectrons emitted from the photocathode of the light-receiving surface plate 2 and converged by the focus electrode 4, and emits secondary electrons obtained by multiplying the photoelectrons.
- the secondary electron emission surface is formed.
- the collection efficiency of the photons is high.
- the second-stage Venetian blind dynode 5A can emit more secondary electrons.
- the metal channel dynode 5B has a plurality of through-holes 5B3 that are opened in a slit shape in a substrate 5B2 in which mounting holes 5B1 to be fitted to each insulating pipe 10 (see FIG. 1) are formed at four corners. You. Each through hole 5B3 extends parallel to each other along each electrode element 5A3 of the Venetian blind dynode 5A.
- Each through-hole 5B3 has an inner wall surface having a cross-sectional shape that is inclined so that the opening width on the emission side is wider than the opening width on the collection side of secondary electrons (see Fig. 1). Has a secondary electron emission surface that multiplies and emits secondary electrons incident from the collection side.
- the first-stage Venetian blind dynode 5 A and the twelfth-stage metal channel dynode 5 B of the dynode part 5 are stacked in an insulated state with the anode 6 and the anode 6. It is supported in multiple stages with the final stage dynode 5C.
- mounting holes 6A and 5C1 to be fitted to each insulating pipe 10 are provided at the four corners of the anode 6 and the final stage dynode 5C. Each is formed.
- a plurality of washer-shaped insulating spacers (insulating plates) 11 to be fitted to each insulating pipe 10 and a plurality of insulating rings 12 and 13 are provided.
- a plurality of nuts 14 are provided which are screwed into a male screw portion 9A formed at the tip of each support 9.
- an insulating ring 12 for each insulating pipe 10, an insulating ring 12, a mounting hole 5Cl for the final dynode 5C, an insulating spacer 11, a mounting hole 6A for the anode 6, and an insulating spacer (insulating plate) 11 are provided.
- the mounting holes 5B1 and insulating spacers (insulating plates) 11 of the metal channel dynode 5B are alternately fitted to each insulating pipe 10 in this order, and the Venetian blind dynode 5A is mounted.
- the holes 5A1 and the insulating rings 13 are fitted into the insulating pipes 10, so that the first Venetian blind dynodes 5A and the 2-14th metal channel dynodes 5B are insulated from each other in the stacked state. And it is arranged in multiple stages together with the final die node 5C.
- each mounting hole 4A formed in the flange portion 4B of the focus electrode 4 is fitted to the distal end of each support 9 and is engaged with the male screw portion 9A at the distal end of each support 9.
- Each nut 14 screwed as a member presses the insulating ring 13 through the flange portion 4B of the focus electrode 4, thereby forming the focus electrode 4, the first-stage Venetian blind dynode 5A, and the second-fourth metal.
- the channel dynode 5B, the anode 6, and the final dynode 5C are firmly supported integrally with each support 9 together with each insulating spacer (insulating plate) 11.
- the photoelectric surface on the back surface emits photoelectrons, and the emitted photoelectrons are focused.
- the electrode 4 converges on the first-stage Venetian blind dynode 5A.
- the focus electrode 4 Since the secondary electron emission surfaces of the electrode elements 5A3 are adjacent to each other and a large area is secured as a whole, the focus electrode 4 The converged photoelectrons are efficiently collected and multiplied, and the multiplied secondary electrons are emitted toward the second-stage metal channel dynode 5B.
- the 2-14th metal channel dynode 5B efficiently multiplies the secondary electrons efficiently collected and multiplied by the first-stage Venetian blind dynode 5A.
- the secondary electrons multiplied by the metal channel dynode 5B of the 214th stage are efficiently detected by the anode 6 as an electric signal.
- the dynodes of the dynode unit 5 up to the 2nd to 14th stages are provided. Since it is composed of the metal channel dynode 5B that can make the lamination state thin, the total length of the dynode part 5 in the lamination direction can be made short and compact.
- the insulating pipes 10 are fitted to the plurality of columns 9 erected on the stem plate 3 constituting the vacuum vessel, respectively.
- Each mounting hole 5A1 of the Venetian blind dynode 5A constituting the dynode part 5, each mounting hole 5B1 of each metal channel dynode 5B, and each insulating spacer (insulating plate) 11 are fitted.
- the Venetian blind dynode 5A, the metal channel dynodes 5B, and the insulating spacers (insulating plates) 11 are integrally and firmly supported on the support 9.
- the Venetian blind dynode 5A, each metal channel dynode 5B, and each insulating spacer (insulating plate) 11 of the dynode unit 5 are inadvertently caused by vibration or impact.
- the vibration resistance of the conventional electron multiplier was 1000 m / s 2 , but the vibration resistance of the electron multiplier of the embodiment was increased to 3000 m / s 2 , which is three times that of the conventional example. .
- the electron multiplier according to the present invention is not limited to one embodiment.
- the dynode unit 5 may be configured such that all the dynodes are configured by metal channel dynodes.
- the insulating spacer (insulating plate) 11 is not limited to a washer shape, and may be formed in a square ring shape having mounting holes formed at four corners.
- an appropriate locking member may be adhered or welded to the tip of each column 9, and the like.
- the electron multiplier of the present invention may be an electron multiplier without a photocathode.
- each dynode and each insulating plate of the dynode part are fitted or engaged with a support standing upright on the stem plate constituting the vacuum vessel, and in this state, each dynode and each insulating plate are fitted. Since the insulating plate is integrally and firmly supported by the pillars, the dynode part where each dynode and each insulating plate do not inadvertently shift sideways due to vibration or impact is An electron multiplier that exhibits excellent vibration resistance can be provided.
Landscapes
- Measurement Of Radiation (AREA)
- Electron Tubes For Measurement (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/560,785 US7741758B2 (en) | 2003-06-17 | 2004-06-16 | Electron multiplier including dynode unit, insulating plates, and columns |
EP04745983.9A EP1632981B1 (en) | 2003-06-17 | 2004-06-16 | Electron multiplier |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003172502A JP2005011592A (ja) | 2003-06-17 | 2003-06-17 | 電子増倍管 |
JP2003-172502 | 2003-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004112081A1 true WO2004112081A1 (ja) | 2004-12-23 |
Family
ID=33549475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/008442 WO2004112081A1 (ja) | 2003-06-17 | 2004-06-16 | 電子増倍管 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7741758B2 (ja) |
EP (1) | EP1632981B1 (ja) |
JP (1) | JP2005011592A (ja) |
WO (1) | WO2004112081A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7812532B2 (en) | 2006-02-28 | 2010-10-12 | Hamamatsu Photonics K.K. | Photomultiplier tube, radiation detecting device, and photomultiplier tube manufacturing method |
US7838810B2 (en) * | 2006-02-28 | 2010-11-23 | Hamamatsu Photonics K.K. | Photomultiplier tube and a radiation detecting device employing the photomultiplier tube |
US7847232B2 (en) | 2006-02-28 | 2010-12-07 | Hamamatsu Photonics K.K. | Photomultiplier tube and radiation detecting device employing the photomultiplier tube |
US7902509B2 (en) | 2006-02-28 | 2011-03-08 | Hamamatsu Photonics K.K. | Photomultiplier tube and radiation detecting device |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4754804B2 (ja) * | 2004-10-29 | 2011-08-24 | 浜松ホトニクス株式会社 | 光電子増倍管及び放射線検出装置 |
US20100326429A1 (en) * | 2006-05-19 | 2010-12-30 | Cumpston Brian H | Hermetically sealed cylindrical solar cells |
US20100132765A1 (en) * | 2006-05-19 | 2010-06-03 | Cumpston Brian H | Hermetically sealed solar cells |
US8853617B1 (en) * | 2013-03-14 | 2014-10-07 | Schlumberger Technology Corporation | Photomultiplier for well-logging tool |
US9524855B2 (en) * | 2014-12-11 | 2016-12-20 | Thermo Finnigan Llc | Cascaded-signal-intensifier-based ion imaging detector for mass spectrometer |
RU2731363C1 (ru) * | 2019-12-26 | 2020-09-02 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский университет "Московский институт электронной техники" | Вакуумный эмиссионный триод |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1072276A (en) | 1965-06-22 | 1967-06-14 | William H Johnston Lab Inc | Improvements in and relating to electron multipliers |
JPS52129369A (en) * | 1976-04-22 | 1977-10-29 | Src Lab | Diode for photoelectric multiplier |
JPS6182646A (ja) * | 1984-05-09 | 1986-04-26 | アジヤンス ナシヨナル ドウ ヴエロリザシオン ドウ ラ ルシエルシエ | 電界局在化手段を有する電子増倍装置 |
JPS62287560A (ja) * | 1986-06-03 | 1987-12-14 | エヌ・ベ−・フィリップス・フル−イランペンファブリケン | 光電子増倍管の製造方法 |
JPH05325878A (ja) * | 1992-05-20 | 1993-12-10 | Hamamatsu Photonics Kk | 電子増倍管 |
JPH087825A (ja) | 1994-06-20 | 1996-01-12 | Hamamatsu Photonics Kk | 電子増倍管 |
JPH0945275A (ja) * | 1995-05-19 | 1997-02-14 | Hamamatsu Photonics Kk | 光電子増倍管 |
EP0911864A1 (en) | 1996-05-15 | 1999-04-28 | Hamamatsu Photonics K.K. | An electron multiplier |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2664515A (en) * | 1951-06-22 | 1953-12-29 | Lincoln G Smith | Magnetic electron multiplier |
NL256260A (ja) * | 1959-09-30 | |||
DE69404079T2 (de) * | 1993-04-28 | 1997-11-06 | Hamamatsu Photonics Kk | Photovervielfacher |
US5841231A (en) * | 1995-05-19 | 1998-11-24 | Hamamatsu Photonics K.K. | Photomultiplier having lamination structure of fine mesh dynodes |
JP4231123B2 (ja) * | 1998-06-15 | 2009-02-25 | 浜松ホトニクス株式会社 | 電子管及び光電子増倍管 |
EP1011125A4 (en) * | 1998-07-01 | 2000-09-20 | Toshiba Kk | X-RAY IMAGE DETECTOR |
JP4237308B2 (ja) | 1998-11-10 | 2009-03-11 | 浜松ホトニクス株式会社 | 光電子増倍管 |
-
2003
- 2003-06-17 JP JP2003172502A patent/JP2005011592A/ja active Pending
-
2004
- 2004-06-16 EP EP04745983.9A patent/EP1632981B1/en not_active Expired - Lifetime
- 2004-06-16 US US10/560,785 patent/US7741758B2/en active Active
- 2004-06-16 WO PCT/JP2004/008442 patent/WO2004112081A1/ja active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1072276A (en) | 1965-06-22 | 1967-06-14 | William H Johnston Lab Inc | Improvements in and relating to electron multipliers |
JPS52129369A (en) * | 1976-04-22 | 1977-10-29 | Src Lab | Diode for photoelectric multiplier |
JPS6182646A (ja) * | 1984-05-09 | 1986-04-26 | アジヤンス ナシヨナル ドウ ヴエロリザシオン ドウ ラ ルシエルシエ | 電界局在化手段を有する電子増倍装置 |
JPS62287560A (ja) * | 1986-06-03 | 1987-12-14 | エヌ・ベ−・フィリップス・フル−イランペンファブリケン | 光電子増倍管の製造方法 |
JPH05325878A (ja) * | 1992-05-20 | 1993-12-10 | Hamamatsu Photonics Kk | 電子増倍管 |
JPH087825A (ja) | 1994-06-20 | 1996-01-12 | Hamamatsu Photonics Kk | 電子増倍管 |
JPH0945275A (ja) * | 1995-05-19 | 1997-02-14 | Hamamatsu Photonics Kk | 光電子増倍管 |
EP0911864A1 (en) | 1996-05-15 | 1999-04-28 | Hamamatsu Photonics K.K. | An electron multiplier |
Non-Patent Citations (1)
Title |
---|
See also references of EP1632981A4 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7812532B2 (en) | 2006-02-28 | 2010-10-12 | Hamamatsu Photonics K.K. | Photomultiplier tube, radiation detecting device, and photomultiplier tube manufacturing method |
US7838810B2 (en) * | 2006-02-28 | 2010-11-23 | Hamamatsu Photonics K.K. | Photomultiplier tube and a radiation detecting device employing the photomultiplier tube |
US7847232B2 (en) | 2006-02-28 | 2010-12-07 | Hamamatsu Photonics K.K. | Photomultiplier tube and radiation detecting device employing the photomultiplier tube |
US7902509B2 (en) | 2006-02-28 | 2011-03-08 | Hamamatsu Photonics K.K. | Photomultiplier tube and radiation detecting device |
EP1995762A4 (en) * | 2006-02-28 | 2016-06-15 | Hamamatsu Photonics Kk | PHOTO VENDERS AND RADIATION DETECTION DEVICE |
Also Published As
Publication number | Publication date |
---|---|
EP1632981A4 (en) | 2007-09-05 |
EP1632981B1 (en) | 2014-12-03 |
US7741758B2 (en) | 2010-06-22 |
EP1632981A1 (en) | 2006-03-08 |
US20060232205A1 (en) | 2006-10-19 |
JP2005011592A (ja) | 2005-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0690478B1 (en) | Electron tube | |
JP3598173B2 (ja) | 電子増倍器及び光電子増倍管 | |
US6384519B1 (en) | Micro-dynode integrated electron multiplier | |
WO1998019341A9 (en) | Microdynode integrated electron multiplier | |
WO2004112081A1 (ja) | 電子増倍管 | |
JP4246879B2 (ja) | 電子増倍管及び光電子増倍管 | |
JP4231123B2 (ja) | 電子管及び光電子増倍管 | |
JP3535094B2 (ja) | 光電子増倍管用パッケージ | |
WO2007099958A1 (ja) | 光電子増倍管、放射線検出装置および光電子増倍管の製造方法 | |
US4806827A (en) | Multiplier element of the aperture plate type, and method of manufacture | |
JPH09306416A (ja) | 電子増倍器及び光電子増倍管 | |
JP4249548B2 (ja) | 電子増倍管 | |
JP2007520048A (ja) | イオンフィードバックを抑制した平行板型電子増倍管 | |
JP2002008528A (ja) | ダイノードの製造方法及び構造 | |
JP4917280B2 (ja) | 電子増倍管 | |
WO2005091333A1 (ja) | 光電子増倍管 | |
JP5864210B2 (ja) | 電子管およびその製造方法 | |
JP2009200044A (ja) | 光電子増倍管 | |
WO2006046617A1 (ja) | 光電子増倍管及びそれを含む放射線検出装置 | |
JP3620920B2 (ja) | 電子増倍器及び光電子増倍管 | |
JP4790331B2 (ja) | 二次電子増倍電極及び光電子増倍管 | |
JPS6378448A (ja) | 光電子増倍管 | |
CN114093742A (zh) | 光敏传感器及其制备工艺 | |
JPS62274538A (ja) | イメ−ジ管 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004745983 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006232205 Country of ref document: US Ref document number: 10560785 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2004745983 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10560785 Country of ref document: US |