IPC 7 English version H05H !A-H05H 15/00

H05H-H05H01500

SECTION H – ELECTRICITY

H 05

ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

H 05 H

PLASMA TECHNIQUE (fusion reactors G21B; ion-beam tubes H01J 27/00; magnetohydrodynamic generators H02K 44/08; producing X-rays involving plasma generation H05G 2/00); PRODUCTION OF ACCELERATED ELECTRICALLY- CHARGED PARTICLES OR OF NEUTRONS (obtaining neutrons from radioactive sources G21, e.g. G21B, G21C, G21G); PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS (atomic clocks G04F 5/14; devices using stimulated emission H01S; frequency regulation by comparison with a reference frequency determined by energy levels of molecules, atoms, or subatomic particles H03L 7/26)

Notes

(1)

This subclass covers:

(a)

generating or handling plasma;

(b)

devices not covered by subclass H01J and in which electrons, ion beams, or neutral particles are accelerated to high energies;

(c)

devices for producing neutral particle beams; [3]

(d)

targets for (a), (b), or (c). [3]

(2)

Attention is drawn to subclass G21K. [3]

Subclass Index

PLASMA TECHNIQUE

H05H 1/00

PRODUCTION OR ACCELERATION OF NEUTRAL PARTICLE BEAMS

H05H 3/00

TARGETS FOR NUCLEAR REACTIONS

H05H 6/00

PARTICLE ACCELERATORS

Direct voltage accelerators, accelerators using single pulses

H05H 5/00

Linear; magnetic induction; magnetic resonance

H05H 9/00; H05H 11/00; H05H 13/00

Others

H05H 15/00

Details

H05H 7/00

Generating plasma; Handling plasma

Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma (electron optics H01J)

using electrostatic fields [3]

using magnetic fields substantially generated by the discharge in the plasma

Longitudinal pinch devices

Theta pinch devices

using applied magnetic fields only

using cusp configuration (H05H 1/14 takes precedence) [3]

wherein the containment vessel forms a closed loop, e.g. stellarator

wherein the containment vessel is straight and has magnetic mirrors

using applied electric and magnetic fields

wherein the fields oscillate at a very high frequency, e.g. in the microwave range

Ohmic heating

for injection heating

Generating plasma [2]

Plasma torches [2]

Cooling arrangements [3]

using applied electromagnetic fields, e.g. high-frequency or microwave energy (H05H 1/28 takes precedence) [3]

using an arc (H05H 1/28 takes precedence) [3]

Details, e.g. electrodes, nozzles [3]

Circuit arrangements (H05H 1/38, H05H 1/40 take precedence) [3]

Guiding or centering of electrodes [3]

using applied magnetic fields, e.g. for focusing or rotating the arc [3]

with provisions for introducing materials into the plasma, e.g. powder, liquid (electrostatic spraying, spraying apparatus with means for charging the spray electrically B05B 5/00) [3]

using more than one torch [3]

using applied electromagnetic fields, e.g. high frequency or microwave energy (H05H 1/26 takes precedence) [3]

using an arc (H05H 1/26 takes precedence) [3]

and using applied magnetic fields, e.g. for focusing or rotating the arc [3]

using exploding wires or spark gaps (H05H 1/26 takes precedence; spark gaps in general H01T) [3]

Plasma accelerators [3]

Production or acceleration of neutral particle beams, e.g. molecular or atomic beams [3]

Molecular or atomic-beam generation, e.g. resonant beam generation (gas masers H01S 1/06) [3]

Acceleration by electromagnetic wave pressure [3]

Generating neutron beams (targets for producing nuclear reactions H05H 6/00; neutron sources G21G 4/02) [5]

Direct voltage accelerators; Accelerators using single pulses (H05H 3/06 takes precedence) [5]

Details (targets for producing nuclear reactions H05H 6/00) [3]

Accelerating tubes (vessels or containers of electric discharge tubes with improved potential distribution over surface of vessel H01J 5/06; shields of X-ray tubes associated with vessels or containers H01J 35/16) [4]

energised by electrostatic generators, e.g. by van de Graaff generator [4]

Tandem accelerators; Multi-stage accelerators

Particle accelerators using step-up transformers, e.g. resonance transformers [4]

Targets for producing nuclear reactions (supports for targets or objects to be irradiated G21K 5/08) [3]

Details of devices of the types covered by groups H05H 9/00 to H05H 13/00 (targets for producing nuclear reactions H05H 6/00) [3]

Circuits or systems for supplying or feeding radio-frequency energy (radio-frequency generators H03B)

Magnet systems; Energisation thereof

Two-beam arrangements; Multi-beam arrangements

Arrangements for injecting particles into orbits

Arrangements for ejecting particles from orbits

Arrangements for varying final energy of beam

Vacuum chambers (H05H 5/03 takes precedence) [4]

of the waveguide type [4]

Cavities; Resonators [4]

with superconductive walls [4]

Details of linear accelerators, e.g. drift tubes (H05H 7/02 to H05H 7/20 take precedence) [4]

Linear accelerators (H05H 11/00 takes precedence)

Travelling-wave linear accelerators

Standing-wave linear accelerators

11/

Magnetic induction accelerators, e.g. betatrons

11/

Air-cored betatrons

11/

Biased betatrons

13/

Magnetic resonance accelerators; Cyclotrons

13/

Synchrocyclotrons, i.e. frequency-modulated cyclotrons

13/

Synchrotrons

13/

Air-cored magnetic resonance accelerators

13/

Alternating-gradient magnetic resonance accelerators

13/

Accelerators comprising one or more linear accelerating sections and bending magnets or the like to return the charged particles in a trajectory parallel to the first accelerating section, e.g. microtrons [4]

15/

Methods or devices for acceleration of charged particles not otherwise provided for [4]