Device for magnetizing laser plasma by means of a pulsed magnetic field

Patent metadata

Field	Value
Publication number	US-2016014875-A1
Application number	US-201414771023-A
Country	US
Kind code	A1
Filing date	Feb 26, 2014
Priority date	Feb 27, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

A device for magnetizing laser plasma by unit of a pulsed magnetic field, which includes: a laser source for emitting a laser pulse; a vacuum chamber in which a target capable of generating a laser plasma during an interaction of the laser pulse with the target is arranged; and a coil capable of generating a pulsed magnetic field in the laser plasma, the device being characterised in that the coil is arranged in a reentrant chamber containing a coolant.

First claim

1 - 13 . (canceled)

14 . A device for magnetizing a laser plasma with a pulsed magnetic field, comprising:
a vacuum chamber in which a target able to generate a laser plasma during an interaction of the target with a laser pulse is placed; and a winding that is powerable electrically in order to generate a pulsed magnetic field in the laser plasma, wherein the winding is placed in a re-entrant chamber containing a cooling fluid.

15 . The device as claimed in claim 14 , wherein the re-entrant chamber comprises an axial vacuum through-duct comprising two axial ends, each of the axial ends being in communication with the vacuum chamber.

16 . The device as claimed in claim 15 , wherein the winding comprises at least one coil encircling the axial vacuum through-duct.

17 . The device as claimed in claim 15 , wherein the winding comprises two coils encircling the axial vacuum through-duct, said coils being separated by a central plate.

18 . The device as claimed in claim 14 , wherein the re-entrant chamber furthermore comprises at least one radial vacuum through-duct comprising two radial ends, each of the radial ends being in communication with the vacuum chamber.

19 . The device as claimed in claim 18 , wherein the winding comprises two coils encircling the axial vacuum through-duct, said coils being separated by a central plate, and wherein the radial vacuum through-duct is located in the central plate separating the two coils.

20 . The device as claimed in claim 14 , wherein the target is placed in the middle of the winding.

21 . The device as claimed in claim 14 , wherein the target is placed at one end of the winding.

22 . The device as claimed in claim 14 , wherein the cooling fluid is either a gas or a cryogenic fluid.

23 . The device as claimed in claim 14 , wherein the re-entrant chamber comprises a weakly conductive vacuum-resistant material.

24 . The device as claimed in claim 23 , wherein the re-entrant chamber comprises a stainless steel.

25 . The device as claimed in claim 14 , wherein the pulsed magnetic field is a magnetic field the strength of which is higher than a few tesla.

26 . The device as claimed in claim 25 , wherein the pulsed magnetic field is a magnetic field the strength of which is higher than ten tesla.

27 . The device as claimed in claim 26 , wherein the pulsed magnetic field is a magnetic field the strength of which is higher than forty tesla.

28 . The device as claimed in claim 14 , furthermore comprising a laser source for emitting a laser pulse able to interact with the target in order to generate the laser plasma, wherein the laser pulse possesses a power comprised between one gigawatt and one petawatt.

29 . The device as claimed in claim 28 , wherein the laser pulse possesses a power comprised between one terawatt and one hundred terawatts.

30 . The device as claimed in claim 28 , wherein the laser pulse possesses a duration comprised between ten femtoseconds and ten nanoseconds.

31 . The device as claimed in claim 28 , wherein the laser pulse possesses a duration comprised between ten femtoseconds and ten picoseconds.

32 . The device as claimed in claim 29 , wherein the laser pulse possesses a duration comprised between ten femtoseconds and ten nanoseconds.

33 . The device as claimed in claim 29 , wherein the laser pulse possesses a duration comprised between ten femtoseconds and ten picoseconds.

Assignees

• Ecole Polytech

Inventors

• Fuchs Julien
• Albertaz Bruno
• Pepin Henri
• Portugall Olivier
• Beard Jerôme

Classifications

• H05H6/00 Primary

  Targets for producing nuclear reactions (supports for targets or objects to be irradiated G21K5/08 {; preparation of tritium C01B4/00; targets, e.g. pellets for fusion reactions by laser or charged particles beam injection H05H1/22}) · CPC title

• Y02E30/10

  Nuclear fusion reactors · CPC title

• G21B3/006

  Fusion by impact, e.g. cluster/beam interaction, ion beam collisions, impact on a target · CPC title