Abstract
Maximum intensity, transmission limited cold electron beams from GaAs photocathode in the eV and sub-eV kinetic energy range
Highlights
The present paper addresses the controlled generation of electron beams of maximum intensity in the kinetic energy range Ek ≲ 1 eV suitable for velocity-matched mergedbeam devices in electrostatic ion storage rings
Our work is motivated by the construction of a new-generation low energy electrostatic cryogenic storage ring (CSR) at Max Planck Institute for Nuclear Physics (MPIK) in Heidelberg
In this paper we have investigated the beam performance of the test storage ring (TSR) electron target at kinetic energies in the 1 eV range and below
Summary
The present paper addresses the controlled generation of electron beams of maximum intensity in the kinetic energy range Ek ≲ 1 eV suitable for velocity-matched mergedbeam devices in electrostatic ion storage rings. The advantage of lower emission temperature gets even more prominent at lower energies, where adiabatic emittance damping of the electron beam is less efficient This was recently demonstrated by the beam dynamics simulations for low energy storage rings by Papash et al [6]. Another aspect becoming important at Ek ≲ 1 eV and correspondingly low acceleration voltages is a reliable energy calibration of the electron gun. A specific feature of this work is that we deal with photoemitted electrons in the energy and current range where the processes in the cathode material and on the cathode-tovacuum interface play significant roles in the operation of the device
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Physical Review Special Topics - Accelerators and Beams
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
