Preprint/Report

PUBDB-2014-03910

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Possibilities for reduction of transverse projected emittancesby partial removal of transverse to longitudinal beam correlations

Balandin, V. (Corresponding Author)DESY* ; Decking, W.DESY* ; Golubeva, N.DESY*

2014

This record in other databases:  

Report No.: DESY-14-167; arXiv:1409.6164

Abstract: We show that if in the particle beam there are linear correlations between energy of particles andtheir transverse positions and momenta (linear beam dispersions), then the transverse projectedemittances always can be reduced by letting the beam to pass through magnetostatic system withspecially chosen nonzero lattice dispersions. The maximum possible reduction of the transverseprojected emittances occurs when all beam dispersions are zeroed, and the values of the latticedispersions required for that are completely defined by the values of the beam dispersions and thebeam rms energy spread and are independent from any other second-order central beam moments.Besides that, we prove that, alternatively, one can also use the lattice dispersions to remove linearcorrelations between longitudinal positions of particles and their transverse coordinates (linear beamtilts), but in this situation solution for the lattice dispersions is nonunique and the reduction of thetransverse projected emittances is not guaranteed.

---

Contributing Institute(s):

1. Beschleunigerphysik (MPY)

Research Program(s):

1. No facility / HGF program None (POF2-890) (POF2-890)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2014

---

Database coverage:

---