Title :
Design studies for an experiment to measure energy spread evolution through a solenoidal focusing system
Author :
Cui, Y. ; Valfells, A. ; Bernal, S. ; Reiser, M. ; O´Shea, P.G. ; Kishek, R.A. ; Yun, V. ; Rahimi, N.
Author_Institution :
Inst. for Res. in Electron. & Appl. Phys., College Park, MD, USA
Abstract :
The University of Maryland Electron Ring (UMER) requires a detailed knowledge of the energy spread of the beam. The evolution of energy spread in space-charge dominated beams is not well understood. There are several sources that cause the energy spread growth, such as the Boersch (1954) effect and the longitudinal-longitudinal relaxation effect. According to theoretical analysis, the energy spread should be a few eV, however this has not been verified. We plan to use a cylindrical energy analyzer, which has resolution of 0.5 eV, to measure the evolution of energy spread along a 2 m transport line with a 3-5 keV, 70-135 mA beam. The test beamline will have 3 short solenoids for matching into a long solenoid and 1 short solenoid for matching into the diagnostic chamber. Two energy analyzers will be used to measure energy spread at different positions in the transport line
Keywords :
accelerator magnets; beam handling equipment; electron accelerators; electron beam focusing; particle beam diagnostics; solenoids; storage rings; 2 m; 3 to 5 keV; 70 to 135 mA; Boersch effect; UMER; University of Maryland Electron Ring; beam energy spread evolution; beam matching; beam transport line; charged-particle beams; cylindrical energy analyzer; diagnostic chamber; energy analyzers; energy spread growth; long solenoid; longitudinal-longitudinal relaxation effect; short solenoids; solenoidal focusing system; space-charge dominated beams; test beamline; Acceleration; Cooling; Energy measurement; Equations; Heating; Particle beams; Particle measurements; Plasma temperature; Solenoids; Temperature dependence;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.987976
