A Non-Interfering Beam Radius Diagnostic Suitable For Induction Linacs

• Main Author: Nexsen, W E
• Other Authors: United States. Department of Energy.
• Format: Report
• Language: English
• Published: Lawrence Livermore National Laboratory 2005
• Subjects: Lawrence Livermore National Laboratory; Magnetic Moments; 43 Particle Accelerators; 42 Engineering; Beam Transport; Linear Accelerators; Electrons; Accelerators; Time Resolution; Induction; Eta; DML
• Online Access: https://doi.org/10.2172/15020366; https://digital.library.unt.edu/ark:/67531/metadc1408276/

High current electron induction linacs operate in a parameter regime that allows the use of a diamagnetic loop (DML) to measure the beam magnetic moment. Under certain easily met conditions the beam radius can be derived from the moment measurement. The DML has the advantage over the present methods of measuring beam radius in that it is an electrical measurement with good time resolution that does not interfere with the beam transport. I describe experiments on the LLNL accelerators, ETA-II and FXR that give confidence in the use of a DML as a beam diagnostic.