Alfred W Maschke

US Patent:

43920802, Jul 5, 1983

Filed:

May 23, 1980

Appl. No.:

6/152461

Inventors:

Alfred W. Maschke - East Moriches NY

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01J 2510

US Classification:

315 541

Abstract:

A novel apparatus and method for focussing beams of charged particles comprising planar arrays of electrostatic quadrupoles. The quadrupole arrays may comprise electrodes which are shared by two or more quadrupoles. Such quadrupole arrays are particularly adapted to providing strong focussing forces for high current, high brightness, beams of charged particles, said beams further comprising a plurality of parallel beams, or beamlets, each such beamlet being focussed by one quadrupole of the array. Such arrays may be incorporated in various devices wherein beams of charged particles are accelerated or transported, such as linear accelerators, klystron tubes, beam transport lines, etc.

US Patent:

43509274, Sep 21, 1982

Filed:

Sep 23, 1980

Appl. No.:

6/189990

Inventors:

Alfred W. Maschke - East Moriches NY

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01J 2510

US Classification:

315 541

Abstract:

Apparatus for focusing beams of charged particles comprising planar arrays of electrostatic quadrupoles. The array may be assembled from a single component which comprises a support plate containing uniform rows of poles. Each pole is separated by a hole through the plate designed to pass a beam. Two such plates may be positioned with their poles intermeshed to form a plurality of quadrupoles.

US Patent:

45609055, Dec 24, 1985

Filed:

Apr 16, 1984

Appl. No.:

6/600645

Inventors:

Alfred W. Maschke - East Moriches NY

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01J 2510

US Classification:

315 541

Abstract:

A charged particle accelerating assembly provided with a predetermined ratio of parametric structural characteristics and with related operating voltages applied to each of its linearly spaced focusing and accelerating quadrupoles, thereby to maintain a particle beam traversing the electrostatic fields of the quadrupoles in the assembly in an essentially laminar flow throughout the assembly.

US Patent:

41722361, Oct 23, 1979

Filed:

Jun 16, 1978

Appl. No.:

5/916182

Inventors:

Alfred W. Maschke - East Moriches NY

Assignee:

The United States as represented by the United States Department of
Energy - Washington DC

International Classification:

H05H 900
H05H 1304

US Classification:

328233

Abstract:

A method for the production of high current pulses of heavy ions having an atomic weight greater than 100. Also a linear accelerator based apparatus for carrying out said method. Pulses formed by the method of the subject invention are suitable for storage in a storage ring. The accumulated pulses may be used in inertial fusion apparatus.

US Patent:

44019181, Aug 30, 1983

Filed:

Nov 10, 1980

Appl. No.:

6/205070

Inventors:

Alfred W. Maschke - East Moriches NY

International Classification:

H01J 2308

US Classification:

315 534

Abstract:

A klystron includes a source for emitting at least one electron beam, and an accelerator for accelarating the beam in a given direction through a number of drift tube sections successively aligned relative to one another in the direction of the beam. A number of electrostatic quadrupole arrays are successively aligned relative to one another along at least one of the drift tube sections in the beam direction for focusing the electron beam. Each of the electrostatic quadrupole arrays forms a different quadrupole for each electron beam. Two or more electron beams can be maintained in parallel relationship by the quadrupole arrays, thereby enabling space charge limitations encountered with conventional single beam klystrons to be overcome.