Speaker
Mr
Marcin Patecki
(CERN)
Description
The nanometer beam size in the interaction point (IP) is required for future linear colliders in order to achieve the required rate of particle collisions. The goal of the ultra-low β∗ study is to lower the IP vertical beam size by lowering the βy* value. The experimental part of this project is being performed in KEK Accelerator Test Facility (ATF2) where the beamline design and conditions are analogous to the Beam Delivery System (BDS) of the future linear colliders.
Stronger beam focusing makes the beam more sensitive
to any imperfections like e.g. magnetic multipole fields and
fringe fields. It also causes the second and third order optical
aberrations to become more pronounced and more difficult
to correct. Using the computer simulations we identify the
most important aberrations and develop the mitigation methods, e.g. tuning knobs and use of the octupole magnets.
The tuning simulations are compared with experimental results from ATF2.
Primary author
Mr
Marcin Patecki
(CERN)
Co-author
Dr
Tomas Rogelio
(CERN)
