US 11,899,159 B2
Regulated charged particle beam emitter systems and methods
Jani Reijonen, Sugar Land, TX (US); and Kevin McFarland, Richmond, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Apr. 2, 2020, as Appl. No. 16/838,490.
Claims priority of provisional application 62/828,029, filed on Apr. 2, 2019.
Prior Publication US 2020/0321182 A1, Oct. 8, 2020
Int. Cl. G01V 5/08 (2006.01); G01V 5/12 (2006.01); H01J 29/48 (2006.01); H05H 5/06 (2006.01); H01J 35/06 (2006.01); H01J 35/04 (2006.01); H01J 35/14 (2006.01); H05G 1/08 (2006.01); H01J 35/32 (2006.01); H01J 35/18 (2006.01); H01J 35/16 (2006.01); H01J 35/08 (2006.01)
CPC G01V 5/08 (2013.01) [G01V 5/125 (2013.01); H01J 29/481 (2013.01); H01J 35/045 (2013.01); H01J 35/064 (2019.05); H01J 35/14 (2013.01); H01J 35/16 (2013.01); H01J 35/186 (2019.05); H01J 35/32 (2013.01); H05G 1/085 (2013.01); H05H 5/06 (2013.01); H01J 35/116 (2019.05)] 9 Claims
OG exemplary drawing
 
1. A beam injector comprising:
a heater disposed proximate a cathode emitter, the cathode emitter configured to emit electrons when heated by the heater;
a first electrode configured to bias at least a portion of the electrons to remain on the cathode emitter and focus the emitted electrons into an electron beam;
a first resistor coupled between the cathode emitter and the first electrode and configured to allow self-regulation of a voltage potential on the first electrode based at least in part on a current of the electron beam;
one or more second electrodes configured to focus and/or accelerate the electron beam; and
one or more second resistors coupled between the one or more second electrodes and the cathode emitter and configured to regulate a voltage potential on the one or more second electrodes
wherein the beam injector further comprises a target configured to receive the electron beam, and wherein the target is configured to generate radiation when contacted with the electron beam.