Patent ID: 11874414
Assignee: TSINGHUA UNIVERSITY
Field: Environmental technology (Chemistry)
Classification: CPC G  C  H | IPC C  G

Claim 0:
1. A device for measuring electron beam comprising:
a Faraday cup comprising an opening;
a porous carbon material layer located on a surface of the Faraday cup and suspended via the opening, wherein a portion of the porous carbon material layer suspended in the air at the opening is defined as a suspended portion, a length of the suspended portion is greater than or equal to a maximum diameter of an electron beam to be measured; a diameter or a width of the porous carbon material layer is smaller than a minimum diameter of a cross section of the electron beam to be measured; and the porous carbon material layer comprises a plurality of carbon material particles, and a plurality of micro gaps are defined by the plurality of carbon material particles; and
an electricity meter electrically connected to the porous carbon material layer.