IP Library › Granted Patent US 12,193,141
Granted Patent B2
US 12,193,141 · App. 18/069,108 · Granted Jan 7, 2025

Compact high gradient ion accelerating structure

Inventors: Sergey Kutsaev (Santa Monica, CA); Ronald Agustsson (Venice, CA); Alexander Smirnov (Santa Monica, CA)
Assignee: RadiaBeam Technologies, LLC
H05H7/12H05H7/001H05H9/045H05H2007/122H05H9/044
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,193,141
App. No.
18/069,108
Granted
Jan 7, 2025
Kind
B2
Abstract

A high gradient linear accelerating structure can propagate high frequency waves at a negative harmonic to accelerate low-energy ions. The linear accelerating structure can provide a gradient of 50 MV/m for particles at a β of between 0.3 and 0.4. The high gradient structure can be a part of a linear accelerator configured to provide an energy range from an ion source to 450 MeV/u for 12 C 6+ and 250 MeV for protons. The linear accelerator can include one or more of the following sections: a radiofrequency quadrupole (RFQ) accelerator operating at the sub-harmonic of the S-band frequency, a high gradient structure for the energy range from ˜45 MeV/u to ˜450 MeV/u.

Claims (32)

1. A cell component for use in a linear particle accelerator, the cell component comprising:

a body defining a cell cavity; and

an iris comprising:

a central aperture configured to be disposed about a beam axis;

a plurality of holes disposed circumferentially around the aperture; and

a nose disposed radially between the aperture and the plurality of holes, the nose having a thickness greater than an iris thickness.

2. The cell component of claim 1 , wherein a first radial portion of the nose comprises an increasing thickness radially from the beam axis and a second radial portion comprises a decreasing thickness radially from the beam axis.

3. The cell component of claim 2 , wherein a nose rise angle formed between the beam axis and a flat surface of the second radial portion is between about 50° and 75°.

4. The cell component of claim 1 , wherein the body defines a cell length of between 6 mm and 6 cm.

5. The cell component of claim 1 , wherein the cell component is configured receive a beam of particles along the beam axis and to propagate electromagnetic waves at a negative harmonic synchronous with the beam of particles.

6. The cell component of claim 1 , wherein the plurality of holes comprises 8 and 20 holes.

7. The cell component of claim 1 , wherein a radial spacing between each of the plurality of holes is regular.

8. The cell component of claim 1 , wherein each of the plurality of holes comprises a circular shape.

9. The cell component of claim 1 , wherein the body of the cell component comprises a circular cross section.

10. The cell component of claim 1 , wherein a portion of the iris radially between the nose and each of the plurality of holes is generally smooth and flat with a constant thickness.

11. The cell component of claim 1 , wherein each of the plurality of holes is disposed at a hole orbit radius from a center of the central aperture, and wherein a ratio of a diameter of the cell component to the hole orbit radius is between about 2 and about 3.

12. The cell component of claim 1 , wherein each of the plurality of holes is disposed at a hole orbit radius from a center of the central aperture, and wherein a ratio of a diameter of each of the plurality of holes to a diameter of the central aperture is between about 0.75 and about 2.5.

13. The cell component of claim 1 , wherein a cross-section of each of the plurality of holes is rounded along the beam axis, forming a hole blend radius.

14. The cell component of claim 13 , wherein hole cell blend radius is between about 0.3 mm and about 3 mm.

15. The cell component of claim 13 , wherein a cross-section of each of an intersection of the iris with the body is rounded along the beam axis, forming a cell blend radius.

16. The cell component of claim 15 , wherein the cell blend radius is between about 0.3 mm and about 3 mm.

17. The cell component of claim 15 , wherein a ratio of the hole blend radius to the cell blend radius is between about 0.5 and about 2.

18. The cell component of claim 2 , wherein a cross section of the second radial portion forms a portion of a non-circular ellipse.

19. A cell component for use in a linear particle accelerator, the cell component comprising:

a body defining a cell cavity;

a first iris comprising:

a first central aperture configured to be disposed about a beam axis; and

a first plurality of holes disposed circumferentially around the aperture; and

a second iris comprising:

a second central aperture coaxial with the first central aperture; and

a second plurality of holes disposed circumferentially around the second aperture.

20. The cell component of claim 19 , wherein each of the first plurality of holes is arranged along a line parallel to the beam axis with a corresponding hole of the second plurality of holes.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 22, 2022
From: KUTSAEV, SERGEY; AGUSTSSON, RONALD; SMIRNOV, ALEXANDER
To: RADIABEAM TECHNOLOGIES, LLC
Reel/Frame 062186/0080 →
Continuity (4)
Division 16669215 · Oct 30, 2019
Continuation PCTUS2018030980 · May 3, 2018
Provisional Application 62502405 · May 5, 2017
Related Publication 20230276564A1 · Aug 31, 2023
References Cited (58)
US 2945981A · Karp · 1960 [cited by applicant]
US 5578909A · Billen · 1996 [cited by applicant]
US 6376990B1 · Allen et al. · 2002 [cited by applicant]
US 6448722B1 · Yu et al. · 2002 [cited by applicant]
US 6465957B1 · Whitham et al. · 2002 [cited by applicant]
US 6646383B2 · Bertsche et al. · 2003 [cited by applicant]
US 7046765B2 · Wong et al. · 2006 [cited by applicant]
US 7411361B2 · Agustsson et al. · 2008 [cited by applicant]
US 7423381B2 · Hanna · 2008 [cited by examiner]
US 7764324B2 · Andonian et al. · 2010 [cited by applicant]
US 8148922B2 · Cleland et al. · 2012 [cited by applicant]
US 8947115B2 · Rosenzweig et al. · 2015 [cited by applicant]
US 9023765B1 · Rimmer et al. · 2015 [cited by applicant]
US 9847205B2 · Sherman et al. · 2017 [cited by applicant]
US 9913360B1 · Antipov · 2018 [cited by examiner]
US 10212800B2 · Agustsson et al. · 2019 [cited by applicant]
US 20110290379A1 · Murokh et al. · 2011 [cited by applicant]
US 20130163707A1 · Habs et al. · 2013 [cited by applicant]
US 20150057484A1 · Amaldi · 2015 [cited by applicant]
US 20150338545A1 · Arodzero et al. · 2015 [cited by applicant]
US 20180279461A1 · Agustsson · 2018 [cited by examiner]
US 20180343733A1 · Mustapha et al. · 2018 [cited by applicant]
US 20200068699A1 · Kutsaev et al. · 2020 [cited by applicant]
US 20200092979A1 · Agustsson · 2020 [cited by examiner]
CA 2790793 · 2011 [cited by applicant]
EP 2516006 · 2014 [cited by applicant]
WO WO2018204714 · 2018 [cited by applicant]
Benedetti et al., High Gradient Linac for Proton Therapy, Physical Review Accelerators and Beams 20 120401, Apr. 13, 2017. [cited by applicant]
Cowley, Cyberknife 6D Robotic Radiosurgery Presentation, stored on Mar. 17, 2017. [cited by applicant]
Kutsaev, et al., A dual-energy linac cargo inspection system, Instruments and Experimental Techniques, 2011, vol. 54, No. 2, pp. 241-248. [cited by applicant]
Kutsaev, A New Thermionic RF Electtron Gun for Synchrotron Light Sources, in 4 pages. [cited by applicant]
Kutsaev, Beam Dynamics Studies for A Compact Carbon Ion Linac for Therapy, pp. 947-949. [cited by applicant]
Kutsaev, Sergey V., High Gradient S-band Accelerating Structure for Hadron Therapy Linac, Jun. 7, 2016, Radiabeam Systems, pp. 1-23. [cited by applicant]
Kutsaev, Hellweg2D code for design of high average power traveling wave linacs, Accelerator Seminar at SLAC National Accelerator Laboratory, Sep. 1, 2016 in 28 pages. [cited by applicant]
Kutsaev, et al. High Gradient Accelerting Structures for Carbon Therapy Linac, in 4 pages. [cited by applicant]
Kutsaev, et al., Accelerating Structure for C-Band Electron Linear Accelerator Optimization, Proceedings of LINAC08, Victoria, BC, Canada, pp. 922-924. [cited by applicant]
Kutsaev, et al., Beam optics Studies for a uranium ion micro beam, Oct. 2014, in 6 pages. [cited by applicant]
Kutsaev, et al., Compact 4kW Variable RF Power Coupler for FRIB Quarter-Wave Cavities, in 3 pages. [cited by applicant]
Kutsaev, et al., Compact Electron Linear Accelerator Relus-5 for Radiation Technology Application, Proceedings of EPAC 2006, Edinburgh, Scotland, in 3 pages. [cited by applicant]
Kutsaev, et al. , Electron Accelerators for Novel Cargo Inspection Methods, ScienceDirect, Physics Procedia 90 (2017) 115-125. [cited by applicant]
Kutsaev, et al., High Gradient Superconducting Cavity Development for FFAG, Sep. 2013, in 3 pages. [cited by applicant]
Kutsaev, et al., High Power RF Coupler for ADS Accelerating Cavities, Proceedings of SRF2013, Paris France, pp. 1050-1052. [cited by applicant]
Kutsaev, et al., High-gradient low-accelerating structure using the first negative spatial harmonic of the fundamental mode, Physical Review Special Topics—Accelerators and Beams, Dec. 2007, in 17 pages. [cited by applicant]
Kutsaev, et al., Hybrid Electron Linac Based on Magnetic Coupled Accelerating Structure, Applications of Accelerators, Tech Transfer, Industry Accel/Storage Rings 08: Linear Accelerators, pp. 2136-2138. [cited by applicant]
Kutsaev, et al., Improved charge breeding efficiency of light ions with an electron cyclotron resonance ion sourcem AIP Reivew of Scientifc Instruments 83, 2012 American Institute of Physics. [cited by applicant]
Kutsaev, et al., Input Couplers for the Dipole Mode Peridic Structures, Proceedings of RuPAC-2010, Protvino, Russia, pp. 328-331. [cited by applicant]
Kutsaev, et al., Magnetic Coupled Disk-Loaded Waveguide, Proceedings of RuPAC-2010, Protvino, Russia, pp. 319-321. [cited by applicant]
Kutsaev, et al., Multipactor Simulations in Axisymmetric and Non-Axisymmetric Radio Frequency Structures, Proceedings of RuPAC 2008, Zvenigarad, Russia, pp. 215-217. [cited by applicant]
Kutsaev, et al. , Single-Shot THZ Spectrometer For Bunch Length Measurements, Logicware, Inc. New York, in 3 pages. [cited by applicant]
Kutsaev, et al., Upgrade of Argonne's CW SC Heavy Ion Accelerator, Proceedings of PAC2013, Pasadena, CA, pp. 737-739. [cited by applicant]
Kutsaev, Single-shot mm-wave spectrometer for RF breakdown detection in linear accelerators, Jun. 8, 2016, in 22 pages. [cited by applicant]
Kutsaev, Sergey V., et al. Electron Linac with Deep Energy Control for Adaptive Rail Cargo Inspection System, Manuscript received Dec. 7, 2015. This work has been partially supported by the US Department of Homeland Sec… [cited by applicant]
Ostroumov et al., “Compact Carbon Ion LINAC”, Proceeding of NA-PAC2016 Chicago, IL, Oct. 14, 2016, pp. 1-3 (Year: 2016). [cited by applicant]
Ostroumov et al., “Compact Carbon Ion LINAC”, Argonne National Laboratory NAPAC-2016, pp. 1-23 (Year: 2016). [cited by applicant]
Smirnov, A.V., et al. Multi-cell disk-and-ring tapered structure for compact RF linacs, Nuclear Instruments and Methods in Physics Research A 830, 2016, pp. 294-302. [cited by applicant]
International Search Report—PCT/US2018/023881 filed Mar. 22, 2018, dated Aug. 9, 2018, 11 pages. [cited by applicant]
International Search Report—PCT/US2018/030980 filed May 3, 2018, dated Aug. 2, 2018, 6 pages. [cited by applicant]
International Search Report—PCT/US2018/035346 filed May 31, 2018, dated Sep. 6, 2018, 7 pages. [cited by applicant]