Title :
Design and test of a model pole for the ALS U5.0 undulator
Author :
Hassenzahl, W.V. ; Hoyer, E. ; Savoy, R.
Author_Institution :
Lawrence Berkeley Lab., California Univ., CA, USA
Abstract :
The ALS (Advanced Light Source) insertion devices must meet very tight requirements in terms of field quality and field strength. Even though the ability to calculate the performance of a hybrid insertion device has improved considerably over the past few years, a model pole was assembled to test the ALS U5.0 undulator geometry and to verify the calculations. The model pole consists of a half period of the periodic structure of the insertion device, with mirror plates at the midplane and at the zero-field, half-period planes. A Hall probe was used to measure the vertical component of the field near the midplane of the model as a function of gap and transverse position.<>
Keywords :
X-ray production; electron accelerators; magnetic fields; permanent magnets; storage rings; synchrotron radiation; wigglers; ALS; Advanced Light Source; Hall probe; U5.0 undulator geometry; insertion devices; magnetic fields; model pole; permanent magnets; vertical component; Assembly; Geometry; Hall effect devices; Light sources; Mirrors; Periodic structures; Position measurement; Solid modeling; Testing; 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.1991.165087
