Title :
Lattice properties of the phase I BNL X-ray lithography source obtained from fits to magnetic measurement data
Author :
Blumberg, L.N. ; Murphy, J.B. ; Reusch, M.F.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
The orbit, tune, chromaticity and beta values for the Phase-I XLS (X-ray Lithography Source) ring were computed by numerical integration of the equations of motion using fields obtained from the coefficients of the 3-D solution of Laplace´s equation evaluated by fits to magnetic measurements. The results are in good agreement with available data. The method has been extended to higher-order fits of TOSCA-generated fields in planes normal to the reference axis using the coil configuration proposed for the Superconducting XLS (SXLS). Agreement with results from numerical integration through fields given directly by TOSCA is excellent. The formulation of the normal multipole expansion presented by K.L. Brown and R.V. Sevranckx (1984) has been extended to include skew multipole terms. The method appears appropriate for analysis of magnetic measurements of the SXLS.<>
Keywords :
particle beam diagnostics; storage rings; Laplace´s equation; SXLS; Superconducting XLS; TOSCA-generated fields; beta values; chromaticity; coil configuration; equations of motion; magnetic measurement data; magnetic measurements; normal multipole expansion; orbit; phase I BNL X-ray lithography source; reference axis; skew multipole terms; tune; Extraterrestrial measurements; Laplace equations; Lattices; Magnetic field measurement; Magnetic properties; Magnetic variables measurement; Phase measurement; Superconducting coils; Superconducting magnets; X-ray lithography;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.165064
