Title :
ALS insertion device block measurement and inspection
Author :
Marks, S. ; Carrieri, J. ; Cork, C. ; Hassenzahl, W.V. ; Hoyer, E. ; Plate, D.
Author_Institution :
Lawrence Berkeley Lab., California Univ., CA, USA
Abstract :
The performance specifications for ALS insertion devices require detailed knowledge and strict control of the Nd-Fe-B permanent magnet blocks incorporated in these devices. The measurement and inspection apparatus and the procedures designed to qualify and characterize these blocks are described. A detailed description of a new, automated Helmholtz coil facility for measurement of the three components of magnetic moment is included. Physical block inspection and magnetic moment measurement procedures are described. Together they provide a basis for qualifying blocks and for specifying placement of blocks within an insertion device´s magnetic structures.<>
Keywords :
X-ray production; computerised instrumentation; electron accelerators; inspection; magnetic field measurement; permanent magnets; storage rings; synchrotron radiation; wigglers; ALS insertion devices; Nd-Fe-B; automated Helmholtz coil facility; block measurement; inspection; magnetic moment measurement; magnetic structures; permanent magnet blocks; Coils; Inspection; Laboratories; Light sources; Magnetic fields; Magnetic films; Magnetic flux; Magnetic moments; Optical films; Undulators;
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.1991.165088
