Operation of the Intensity Monitors in Beam Transport Lines at Fermilab   During Run II
  The intensity of charged particle beams at Fermilab must be kept within pre-determined safety and operational envelopes in part by assuring all beam within a few percent has been transported from any source to destination. Beam intensity monitors with toroidial pickups provide such beam intensity measurements in the transport lines between accelerators at FNAL. During Run II, much effort was made to continually improve the resolution and accuracy of the system. 
J. Crisp, B. Fellenz, J. Fitzgerald, D. Heikkinen, M.A. Ibrahim   (Fermilab)
physics.acc-ph physics.ins-det