Title :
Longitudinal coupling impedance of a thin iris collimator
Author :
Gluckstern, R.L. ; Detlefs, W.F.
Author_Institution :
Dept. of Phys., Maryland Univ., College Park, MD, USA
Abstract :
Results of numerical calculations of the longitudinal coupling impedance of a thin iris collimator in a beam pipe are presented. The calculations are performed using an analytic result previously derived. The impedance is calculated as a function of frequency (kc/2 pi ) and inner and outer radius (r=b and r=a). The results are presented by plotting the admittance as a function of k(a-b)=kax for different x identical to (a-b)/a. A comparison is made with the expected behavior of the admittance in the small iris limit (x<<1).<>
Keywords :
beam handling equipment; beam handling techniques; beam pipe; frequency; inner radius; longitudinal coupling impedance; outer radius; small iris limit; thin iris collimator; Admittance; Collimators; Educational institutions; Eigenvalues and eigenfunctions; Frequency; Impedance; Integral equations; Iris; Physics; Symmetric matrices;
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.1991.164716
