Jul 4 – 11, 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

Spin tracking at Future e+e- Colliders

Jul 7, 2012, 10:00 AM
15m
Room 218 (Melbourne Convention and Exhibition Centre)

Room 218

Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 14. Future Accelerators Room 218 - Future Accelerators - Detectors and Computing for HEP - TR14&13

Speaker

Dr Anthony Hartin (DESY (DE))

Description

In order to exploit the full potential of proposed future high-energy electron-positron colliders, precise knowledge of the beam polarization is required as it evolves throughout the entire machine. Here we discuss global spin tracking efforts in the ILC design from source to Interaction Point. Numerical results are presented for the latest International Linear Collider (ILC) and Compact Linear Collider (CLIC) machine parameters. A GEANT model that transports spin is used for the positron sources. Depolarisation studies in the ring and through the spin rotators shows that polarization is maintained within budget. Spin tracking simulations through the Beam Delivery System reveals the importance of orbit correction and nanometer stabilization of final focus quadrupoles. Interaction Point beam-beam effects lead to significant depolarisation, the knowledge of which is obtained through a combination of custom designed polarimeters and analysis of W pair production data. Progress towards a global simulation package which incorporates specific spin tracking codes is discussed.

Primary author

Dr Anthony Hartin (DESY (DE))

Co-author

Gudrid Moortgat-Pick (University of Hamburg)

Presentation materials