US Patent No. 10,914,766

FAST FARADAY CUP FOR MEASURING THE LONGITUDINAL DISTRIBUTION OF PARTICLE CHARGE DENSITY IN NON-RELATIVISTIC BEAMS


Patent No. 10,914,766
Issue Date February 09, 2021
Title Fast Faraday Cup For Measuring The Longitudinal Distribution Of Particle Charge Density In Non-relativistic Beams
Inventorship Ding Sun, Naperville, IL (US)
Alexander Shemyakin, Geneva, IL (US)
Assignee FERMI RESEARCH ALLIANCE, LLC, Batavia, IL (US)

Claim of US Patent No. 10,914,766

1. A Fast Faraday cup, comprising:a plurality of electrodes including a ground electrode having a through hole and a collector electrode configured with a blind hole comprising a collector hole, wherein said plurality of electrodes are configured to allow a beam to fall onto said ground electrode so that said through hole cuts a beamlet that flies into said collector hole and facilitate a measurement of a longitudinal distribution of particle charge density in said beam;
wherein said fast Faraday cup is configured with a coaxial cylindrical topology that includes at least two ports, said coaxial cylindrical topology further including a coaxial transmission line having a center conductor, wherein said collector electrode comprises at least a part of said center conductor; and
said ground electrode includes a hollow portion configured to meet spacing requirements of said coaxial transmission line and match to adjoining coaxial transmission lines, thereby forming a device having a wide bandwidth of approximately 20 GHz and a fast response time.