|
Accession number;99A1045381
|
| Title;Nonlinear-resonance Analysis of Halo-formation excited by Beam-core Breathing. |
| Author;
SHIMOSAKI Y
(Kyushu Univ., Fukuoka, Jpn)
TAKAYAMA K
(High Energy Accelerator Res. Organization(kek), Ibaraki, Jpn)
|
Journal Title;Proc Symp Accel Sci Technol
|
Journal Code:F0512B
|
ISSN:0914-2789
|
|
VOL.12th;NO.;PAGE.45-47(1999)
|
| Figure&Table&Reference;FIG.3, REF.4 |
| Pub. Country;Japan |
| Language;English |
| Abstract;Emittance growth and halo formation for a mismatched beam of a 1D Gaussian distribution in a uniform focusing channel are examined by means of macro-particle simulation. The results are analyzed by the isolated nonlinear resonance theory. The second-harmonic resonance driven by beam core oscillation is numerically and analytically shown to take a key role in forming halo. Analytic estimation of the halo-location is explored and the halo-location is proved to correspond to the outer edge of the resonance islands. Nonlinear fields in an actual particle distribution are shown to significantly affect on the halo's location and size. (author abst.) |
|
|
|
Related Articles;
|
