Investigation into electron cloud effects in the International Linear Collider positron damping ring

Journal Article · Sat Mar 01 00:00:00 EST 2014 · Physical Review Special Topics. Accelerators and Beams

DOI:https://doi.org/10.1103/PhysRevSTAB.17.031002· OSTI ID:1129571

Crittenden, J. A.; Conway, J.; Dugan, G. F.; Palmer, M. A.; Rubin, D. L.; Shanks, J.; Sonnad, K. G.; Boon, L.; Harkay, K.; Ishibashi, T.; Furman, M. A.; Guiducci, S.; Pivi, M. T. F.; Wang, L.

We report modeling results for electron cloud buildup and instability in the International Linear Collider positron damping ring. Updated optics, wiggler magnets, and vacuum chamber designs have recently been developed for the 5 GeV, 3.2-km racetrack layout. An analysis of the synchrotron radiation profile around the ring has been performed, including the effects of diffuse and specular photon scattering on the interior surfaces of the vacuum chamber. The results provide input to the cloud buildup simulations for the various magnetic field regions of the ring. The modeled cloud densities thus obtained are used in the instability threshold calculations. We conclude that the mitigation techniques employed in this model will suffice to allow operation of the damping ring at the design operational specifications

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Accelerator & Fusion Research Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 1129571
• Report Number(s): LBNL-6603E
• Journal Information: Physical Review Special Topics. Accelerators and Beams, Vol. 17, Issue 3; ISSN 1098-4402
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
Large Hadron Collider