NL1036209C2 - Filament assembly having reduced electron beam time constant. - Google Patents
Filament assembly having reduced electron beam time constant. Download PDFInfo
- Publication number
- NL1036209C2 NL1036209C2 NL1036209A NL1036209A NL1036209C2 NL 1036209 C2 NL1036209 C2 NL 1036209C2 NL 1036209 A NL1036209 A NL 1036209A NL 1036209 A NL1036209 A NL 1036209A NL 1036209 C2 NL1036209 C2 NL 1036209C2
- Authority
- NL
- Netherlands
- Prior art keywords
- filament
- segments
- ray tube
- heat sink
- segment
- Prior art date
Links
- 238000010894 electron beam technology Methods 0.000 title claims description 18
- 239000000463 material Substances 0.000 claims description 31
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 15
- 229910052721 tungsten Inorganic materials 0.000 claims description 10
- 239000010937 tungsten Substances 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000012212 insulator Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims 8
- 239000000615 nonconductor Substances 0.000 claims 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- FAYUQEZUGGXARF-UHFFFAOYSA-N lanthanum tungsten Chemical compound [La].[W] FAYUQEZUGGXARF-UHFFFAOYSA-N 0.000 claims 1
- 238000000429 assembly Methods 0.000 description 11
- 230000000712 assembly Effects 0.000 description 11
- 238000013459 approach Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- DECCZIUVGMLHKQ-UHFFFAOYSA-N rhenium tungsten Chemical compound [W].[Re] DECCZIUVGMLHKQ-UHFFFAOYSA-N 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/16—Cathodes heated directly by an electric current characterised by the shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/135—Circuit arrangements therefor, e.g. for temperature control
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/15—Cathodes heated directly by an electric current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/06—Cathodes
- H01J35/064—Details of the emitter, e.g. material or structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/28—Heaters for thermionic cathodes
- H01J2201/2803—Characterised by the shape or size
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/28—Heaters for thermionic cathodes
- H01J2201/2803—Characterised by the shape or size
- H01J2201/281—Cage-like construction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/28—Heaters for thermionic cathodes
- H01J2201/2803—Characterised by the shape or size
- H01J2201/2867—Spiral or helix
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2235/00—X-ray tubes
- H01J2235/12—Cooling
- H01J2235/1212—Cooling of the cathode
Landscapes
- X-Ray Techniques (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1038404A NL1038404C2 (en) | 2007-11-19 | 2010-11-10 | Filament assembly having reduced electron beam time constant. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US94265607 | 2007-11-19 | ||
| US11/942,656 US7539286B1 (en) | 2007-11-19 | 2007-11-19 | Filament assembly having reduced electron beam time constant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL1036209A1 NL1036209A1 (nl) | 2009-05-20 |
| NL1036209C2 true NL1036209C2 (en) | 2010-11-18 |
Family
ID=40577345
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL1036209A NL1036209C2 (en) | 2007-11-19 | 2008-11-18 | Filament assembly having reduced electron beam time constant. |
| NL1038404A NL1038404C2 (en) | 2007-11-19 | 2010-11-10 | Filament assembly having reduced electron beam time constant. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL1038404A NL1038404C2 (en) | 2007-11-19 | 2010-11-10 | Filament assembly having reduced electron beam time constant. |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7539286B1 (https=) |
| JP (1) | JP4937987B2 (https=) |
| DE (1) | DE102008058608B4 (https=) |
| NL (2) | NL1036209C2 (https=) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7924983B2 (en) | 2008-06-30 | 2011-04-12 | Varian Medical Systems, Inc. | Thermionic emitter designed to control electron beam current profile in two dimensions |
| US8340250B2 (en) * | 2009-09-04 | 2012-12-25 | General Electric Company | System and method for generating X-rays |
| US8385506B2 (en) * | 2010-02-02 | 2013-02-26 | General Electric Company | X-ray cathode and method of manufacture thereof |
| US9601300B2 (en) * | 2010-04-09 | 2017-03-21 | Ge Sensing And Inspection Technologies Gmbh | Cathode element for a microfocus x-ray tube |
| US8938050B2 (en) | 2010-04-14 | 2015-01-20 | General Electric Company | Low bias mA modulation for X-ray tubes |
| JP6043476B2 (ja) * | 2011-10-12 | 2016-12-14 | 株式会社日立ハイテクノロジーズ | イオン源およびそれを用いたイオンビーム装置 |
| US9514911B2 (en) * | 2012-02-01 | 2016-12-06 | Varian Medical Systems, Inc. | X-ray tube aperture body with shielded vacuum wall |
| US8831178B2 (en) * | 2012-07-03 | 2014-09-09 | General Electric Company | Apparatus and method of manufacturing a thermally stable cathode in an X-ray tube |
| US9202663B2 (en) * | 2012-12-05 | 2015-12-01 | Shimadzu Corporation | Flat filament for an X-ray tube, and an X-ray tube |
| KR20140112270A (ko) * | 2013-03-13 | 2014-09-23 | 삼성전자주식회사 | 방열 블록을 포함한 엑스선 발생 장치 |
| US9775574B2 (en) | 2014-04-28 | 2017-10-03 | Moxtek, Inc. | XRF analyzer |
| US9711320B2 (en) * | 2014-04-29 | 2017-07-18 | General Electric Company | Emitter devices for use in X-ray tubes |
| US10109450B2 (en) * | 2016-03-18 | 2018-10-23 | Varex Imaging Corporation | X-ray tube with structurally supported planar emitter |
| US20180211809A1 (en) * | 2017-01-26 | 2018-07-26 | Varex Imaging Corporation | Cathode head with multiple filaments for high emission focal spot |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4304142A1 (en) * | 1992-02-13 | 1993-08-19 | Gen Electric Cgr | X=ray tube emission cathode eg for scanner - has focal point of two sizes, resp. one narrow and short and other long in surface with four plateaux formed by channel sections. |
| JPH11283543A (ja) * | 1998-03-31 | 1999-10-15 | Toshiba Electronic Engineering Corp | Ｘ線管の陰極構体 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL21136C (https=) * | 1925-11-02 | |||
| US3737706A (en) * | 1969-04-29 | 1973-06-05 | Rca Corp | Numerical display device having filamentary light sources |
| US4065689A (en) * | 1974-11-29 | 1977-12-27 | Picker Corporation | Dual filament X-ray tube |
| US4823371A (en) * | 1987-08-24 | 1989-04-18 | Grady John K | X-ray tube system |
| US5303281A (en) * | 1992-07-09 | 1994-04-12 | Varian Associates, Inc. | Mammography method and improved mammography X-ray tube |
| JPH10334839A (ja) * | 1997-05-29 | 1998-12-18 | Hitachi Medical Corp | Ｘ線管 |
| CN1222010C (zh) * | 1998-03-16 | 2005-10-05 | 东芝株式会社 | X射线管 |
| US6252937B1 (en) * | 1999-09-14 | 2001-06-26 | General Electric Company | High thermal performance cathode via heat pipes |
| JP2004139790A (ja) * | 2002-10-16 | 2004-05-13 | Toshiba Corp | Ｘ線管装置 |
| FR2855360B1 (fr) * | 2003-05-20 | 2006-10-27 | Ge Med Sys Global Tech Co Llc | Procede d'alimentation d'un filament de chauffage d'un tube a rayons x et tube a rayons x correspondant |
| US7795792B2 (en) * | 2006-02-08 | 2010-09-14 | Varian Medical Systems, Inc. | Cathode structures for X-ray tubes |
-
2007
- 2007-11-19 US US11/942,656 patent/US7539286B1/en active Active
-
2008
- 2008-11-18 NL NL1036209A patent/NL1036209C2/en active Search and Examination
- 2008-11-18 JP JP2008294759A patent/JP4937987B2/ja active Active
- 2008-11-19 DE DE102008058608.0A patent/DE102008058608B4/de active Active
-
2010
- 2010-11-10 NL NL1038404A patent/NL1038404C2/en active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4304142A1 (en) * | 1992-02-13 | 1993-08-19 | Gen Electric Cgr | X=ray tube emission cathode eg for scanner - has focal point of two sizes, resp. one narrow and short and other long in surface with four plateaux formed by channel sections. |
| JPH11283543A (ja) * | 1998-03-31 | 1999-10-15 | Toshiba Electronic Engineering Corp | Ｘ線管の陰極構体 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009129907A (ja) | 2009-06-11 |
| US20090129550A1 (en) | 2009-05-21 |
| NL1036209A1 (nl) | 2009-05-20 |
| NL1038404C2 (en) | 2011-08-16 |
| US7539286B1 (en) | 2009-05-26 |
| DE102008058608B4 (de) | 2014-07-17 |
| JP4937987B2 (ja) | 2012-05-23 |
| NL1038404A (en) | 2010-12-30 |
| DE102008058608A1 (de) | 2009-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AD1A | A request for search or an international type search has been filed | ||
| PD | Change of ownership |
Owner name: VAREX IMAGING CORPORATION; US Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: VARIAN MEDICAL SYSTEMS, INC. Effective date: 20170928 |