Fermilab Electron Cooling Experiment: Design Report

Abstract

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Electron Cooling with Space-Charge Dominated Proton Beams at Iota

“…The transverse temperature of the electrons is dominated by the cathode temperature 𝑇 cath . In the case of a magnetized electron beam, perturbations to the field inside the solenoid manifests itself as an additional effective transverse temperature 𝑇 ⊥,𝐵 ⊥ given by, [14] 𝑇 ⊥,𝐵 ⊥ =…”

Beam physics research with the IOTA electron lens

“…Such a receiver can be used to monitor the electron plasma density and temperature (besides providing a very accurate measurement of the magnetic field) by recording the position, intensity and width of the cyclotron frequency peak (expected at 2.8 GHz in a 0.1 T field, for instance). The device was proposed for electron cooling [119][120][121] and similar systems were applied to other precision measurements [122][123][124]. An operational system would provide a new sensitive tool for electron lenses, especially for electron cooling and electron columns.…”

Progress in space charge compensation using electron columns

“…The current on biased electrodes will measure the flux of lost ions and electrons. The use of a pickup antenna to sense cyclotron radiation and monitor the electron plasma density and temperature (besides providing a very accurate measurement of the magnetic field) was applied to electron cooling [33][34][35] and to other precision measurements [36][37][38]. We plan to include this type of detector in the apparatus.…”