Title :
Small-gap undulator experiment on the NSLS X-ray ring
Author :
Stefan, P.M. ; Krinsky, S. ; Rakowsky, G. ; Solomon, L.
Author_Institution :
Nat. Synchrotron Light Source, Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
We report results of an on-going experiment being carried out in the X13 straight section of the NSLS X-ray Ring which explores the limits of the operation of small-gap undulators. In particular, we discuss measurements of stored electron beam lifetime as a function of the vertical aperture presented by a 4-jaw scraper or a variable-aperture vacuum vessel. At an electron beam current of 300 mA the variable-aperture vacuum chamber was dosed to an inner aperture of 3.8 mm with no effect on the electron beam lifetime. Measurements of the output radiation spectrum of a 16 mm period undulator at a magnet gap of 7.5 mm are also described
Keywords :
X-ray production; accelerator magnets; electromagnets; electron accelerators; electron beams; particle beam diagnostics; storage rings; wigglers; 300 mA; 4-jaw scraper; NSLS X-ray ring; X13 straight section; electron beam current; magnet gap; output radiation spectrum; small-gap undulator experiment; stored electron beam lifetime measurements; variable-aperture vacuum chamber; variable-aperture vacuum vessel; vertical aperture; Apertures; Assembly; Blades; Electron beams; Laboratories; Optical beams; Optical scattering; Particle scattering; Undulators; X-ray scattering;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505575
