Classifications

• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
  • H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
  • H05H7/22—Details of linear accelerators, e.g. drift tubes
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
  • H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
  • H05H9/00—Linear accelerators
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B82—NANOTECHNOLOGY
  • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
  • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites

Definitions

• the present invention relates to linear accelerators and more particularly
• Particle accelerators are used to increase the energy of electrically-charged
• atomic particles e.g., electrons, protons, or charged atomic nuclei, so that they can be studied by nuclear and particle physicists.
• charged particles can break up the nuclei of the target atoms and interact with
• One aspect of the present invention includes a compact linear accelerator
• acceleration axis from a first end to a second end for propagating an electrical
• each transmission line comprising: a first conductor having first and second
• Another aspect of the present invention includes a method of fabricating a
• linear accelerator comprising: casting at least one dielectric composite slab(s)
• Another aspect of the present invention includes a method of
• fabricating a linear accelerator comprising: positioning at least one conductor(s)
• Figure 1 is a side cross-sectional view of a single transmission line of a
• Figure 2 is a top view of the transmission line of Figure 1.
• Figure 3 is a side cross-sectional view of a first illustrative embodiment of
• Figure 4 is a side cross-sectional view of a second illustrative embodiment
• Figure 5 is a top view of a mold form with conductors positioned therein
• Figure 6 is a top view following Figure 5 after introducing the dielectric
• Figure 7 is a top view following Figure 6 after removing the integrally cast
• Figure 8 is a side view of a mold form with dielectric composite material
• Figure 9 is a side view following Figure 8 of a cast dielectric composite
• Figure 10 is a side view following Figure 9, of two cast dielectric
• Figure 11 is a side view following Figure 10 showing the final form or a
• linear accelerator having the second dielectric extruded to fill the region of the
• Figures 1-2 show an exemplary
• the transmission line structure includes a first conductor
• the transmission line 10 preferably has a parallel-plate strip
• shape of the wavefront may be controlled by suitably configuring the width of
• the module e.g. by tapering the width (not shown).
• end 11 is characterized as that end which is connected to a switch (e.g. 28 in
• the second end 12 is that end adjacent a load region, such as an
• Figure 3 and 4 show two exemplary embodiments of the cast dielectric
• a typical Blumlein module has
• first and third conductor strips so as to initiate a propagating reverse polarity
• Figure 3 in particular shows a first exemplary embodiment of the compact
• linear accelerator generally indicated at reference character 20, and comprising a
• asymmetric Blumlein module includes three planar conductors shaped into thin
• second planar conductor strip 25 are separated by a first dielectric material 24
• such the third dielectric material 29 is a dielectric sleeve or wall characteristic of
• This third dielectric material 29 serves to combine the waves and allow
• arrow 16 represents an acceleration
• the switch serves to initially connect the outer planar conductor strips 23, 26 to a ground potential and the middle conductor strip 25 to a high voltage
• the switch 28 is then operated to apply a short circuit at the
• Blumlein module is configured for symmetric or asymmetric operation.
• Blumlein module comprises different dielectric constants and thicknesses (di ⁇
• the second dielectric composite strip 27 has a
• permeability, ⁇ i, and the permittivity, ⁇ z are the material constants of the second
• dielectric constant of the first dielectric strip i.e. ⁇ i ⁇ i.
• the thickness of the first dielectric strip is indicated as di
• the thickness of the second dielectric strip is indicated as di, with di shown as being
• impedance, Z on both sides of the second planar conductor strip 25. It is notable
• the characteristic impedance may be the same on both halves, the
• Figure 4 shows a symmetric Blumlein configuration of the linear
• composite strips 34, 35 are of the same dielectric constant, and the width and
• the switch is adapted to initiate a propagating reverse
• switches 28 and 38 are suitable switches for
• asymmetric or symmetric Blumlein module operation such as for example, gas
• switch and dielectric material types/ dimensions can be suitably chosen
• composite materials of this invention can be stacked to form a single acceleration
• the layers of the stack may have different
• the cast dielectric composite comprises at least one organic
• the particle filler has a dielectric constant greater than the organic
• the at least one organic polymer has a T g greater than
• the cast dielectric composite has a dielectric constant that varies less
• the particle fillers are non-refractory ferroelectric particles
• non-refractory non-refractory
• ferroelectric particles is used herein to refer to particles made from one or more
• ferroelectric materials include barium titanate,
• strontium titanate barium neodymium titanate, barium strontium titanate
• ferroelectric particles useful in the present invention are also useful in the present invention.
• the particles are essentially all nanoparticles which means that the
• particles have a particle size of less than 100 nanometers and preferably a particle
• ferroelectric particles have a size ranging from 50 to 100 nanometers and
• ferroelectric particles useful in this specification preferably from 40-60 nanometers.
• inventions are preferably manufactured by a non-refractory process such as a
• the ferroelectric particles are combined with at least one polymer to form
• the ferroelectric particles may be present in the dielectric layer
• ferroelectric particles are preferably combined with
• the resins may include material such as silicone resins,
• the resin is
• high T g resin preferably a high T g resin.
• high T g it is meant that the resin system used
• resin T g be in excess of 160 0 C and most preferably in excess of 18O 0 C.
• preferred resin system is 406-N Resin manufactured by AlliedSignal Inc.
• fabrication in the present invention utilizes a casting method to produce slab
• a mold form 50 is provided having a mold cavity 51, in which conductors, such as conductor slabs/ strips 52 are spacedly arranged.
• conductors such as conductor slabs/ strips 52 are spacedly arranged.
• the dielectric composite is then cured at appropriate temperatures
• the curing temperatures and pressures can range, for example,
• Figures 8-11 show a second exemplary method of fabricating the linear linear
• a mold form 60 is provided in
• Figure 10 also shows a second material (reference
• the second dielectric material is
• dielectric material is extruded out from between the conductors and dielectric
• the conductive electrodes are coated with one of
• the dielectric layer may include an optional second filler material in order
• woven or non-woven materials such as quartz, silica glass, electronic
• aromatic polyamides or polyesters, particulate materials such as ceramic
• the dielectric materials of this invention may include other optional features
• the dielectric particles and/ or the second filler material can include a
• binding agent to include the bond between the filler and the resin material in
• coupling agents such as silane coupling agents
• invention may include surfactants and wetting agents to control particle

Landscapes

• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Plasma & Fusion (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Insulating Bodies (AREA)
• Laminated Bodies (AREA)
• Particle Accelerators (AREA)
• Organic Insulating Materials (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (2)

Family

ID=38573305

Family Applications (1)

Country Status (9)

Cited By (4)

Families Citing this family (39)

Family Cites Families (10)

• 2006
  • 2006-11-14 CN CNA2006800505616A patent/CN101375644A/zh active Pending
  • 2006-11-14 EP EP06850554A patent/EP1949769B1/en not_active Not-in-force
  • 2006-11-14 JP JP2008540288A patent/JP2009516333A/ja active Pending
  • 2006-11-14 AT AT06850554T patent/ATE509508T1/de not_active IP Right Cessation
  • 2006-11-14 AU AU2006342170A patent/AU2006342170A1/en not_active Abandoned
  • 2006-11-14 CA CA002632193A patent/CA2632193A1/en not_active Abandoned
  • 2006-11-14 WO PCT/US2006/044297 patent/WO2007120211A2/en not_active Ceased
  • 2006-11-14 KR KR1020087011487A patent/KR20080068065A/ko not_active Withdrawn
  • 2006-11-14 US US11/599,797 patent/US7615942B2/en not_active Expired - Fee Related

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