Andrew L Alexander

US Patent:

20210407782, Dec 30, 2021

Filed:

Sep 8, 2021

Appl. No.:

17/468841

Inventors:

- Bloomington IN, US
Andrew W. Alexander - Bloomington IN, US
Aaron R. Todd - Bloomington IN, US

International Classification:

H01J 49/02
H01J 49/00
H01J 49/42

Abstract:

A CDMS may include an ELIT having a charge detection cylinder (CD), a charge generator for generating a high frequency charge (HFC), a charge sensitive preamplifier (CP) having an input coupled to the CD and an output configured to produce a charge detection signal (CHD) in response to a charge induced on the CD, and a processor configured to (a) control the charge generator to induce an HFC on the CD, (b) control operation of the ELIT to cause a trapped ion to oscillate back and forth through the CD each time inducing a charge thereon, and (c) process CHD to (i) determine a gain factor as a function of the HFC induced on the CD, and (ii) modify a magnitude of the portion of CHD resulting from the charge induced on the CD by the trapped ion passing therethrough as a function of the gain factor.