	US 12,278,082 B2
	Pulsed generator of electrically charged particles and method for using a pulsed generator of electrically charged particles
Marie Geleoc, Gif sur Yvette (FR); Jean-Philippe Renault, Gif sur Yvette (FR); and Thomas Oksenhendler, Gometz le Chatel (FR)
Assigned to COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, Paris (FR)
Appl. No. 17/623,941
Filed by COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, Paris (FR)
PCT Filed Jun. 30, 2020, PCT No. PCT/EP2020/068427 § 371(c)(1), (2) Date Dec. 30, 2021, PCT Pub. No. WO2021/001383, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 1907324 (FR), filed on Jul. 2, 2019.
Prior Publication US 2022/0367139 A1, Nov. 17, 2022
Int. Cl. H01J 37/073 (2006.01); H01J 3/02 (2006.01)

CPC H01J 37/073 (2013.01) [H01J 3/021 (2013.01); H01J 2237/06333 (2013.01)]

22 Claims

1. A pulsed generator of electrically charged particles comprising:

a vacuum chamber, and

a pulsed light source that is a laser source configured to produce light pulses with a repetition rate greater than 80 MHz;

wherein:

the vacuum chamber is configured to maintain an internal operating pressure comprised between 10⁻⁶mbar and atmospheric pressure;

the vacuum chamber is configured to accommodate a photocathode and an anode, the photocathode and the anode being separated by an adjustable distance less than or equal to 30 mm;

the vacuum chamber comprises an optical window enabling pulsed light to reach firstly a rear face of the photocathode;

the anode is arranged downstream of the photocathode and has an orifice suitable for the passage of electrically charged particles; said pulsed generator of electrically charged particles comprises a device configured to apply a difference in potential between the photocathode and the anode, said difference in potential being configured to accelerate the charged particles.