PAC2013 - List of Authors (Talman, R.M.)

Paper	Title	Page
TUPAC14	A Linear Envelope Model for Multi-Charge State Linac	478
	Z.Q. He, Z. Liu, J. Wei, Y. Zhang FRIB, East Lansing, USA R.M. Talman Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
	Funding: U.S. Department of Energy The traditional linear envelope tracking model is widely used in linac design and on-line tuning. However, for multi-charge state acceleration situation, where the transfer matrix is different between charge-states, the linear envelope tracking model cannot be utilized. A direct way to handle multi-charge state acceleration is using multi-particle tracking, which is usually high in precision, but lack in efficiency, therefore is not suitable for linac on-line beam tuning. In this paper, a new approach of adapting linear envelope tracking model onto multi-charge state acceleration situation is proposed. The lattice of FRIB is used to test the scheme in both linac segment and folding segment. And the result is then benchmarked with a multi-particle tracking program IMPACT to ensure its precision with enhancement in efficiency.

Paper

Title

Page

A Linear Envelope Model for Multi-Charge State Linac

478

Z.Q. He, Z. Liu, J. Wei, Y. Zhang
FRIB, East Lansing, USA
R.M. Talman
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA

Funding: U.S. Department of Energy
The traditional linear envelope tracking model is widely used in linac design and on-line tuning. However, for multi-charge state acceleration situation, where the transfer matrix is different between charge-states, the linear envelope tracking model cannot be utilized. A direct way to handle multi-charge state acceleration is using multi-particle tracking, which is usually high in precision, but lack in efficiency, therefore is not suitable for linac on-line beam tuning. In this paper, a new approach of adapting linear envelope tracking model onto multi-charge state acceleration situation is proposed. The lattice of FRIB is used to test the scheme in both linac segment and folding segment. And the result is then benchmarked with a multi-particle tracking program IMPACT to ensure its precision with enhancement in efficiency.