source: MML/trunk/machine/SOLEIL/StorageRing/physics_quantumlifetime.m

Last change on this file was 17, checked in by zhangj, 10 years ago

To have a stable version on the server.
  • Property svn:executable set to *
File size: 453 bytes
Line 
1function tau_q = physics_quantumlifetime(epsilon_RF,sigma_epsilon,tau_epsilon)
2% physics_quantum_lifetime - computes quantum lifetime
3%
4%  INPUTS
5%  1. epsilon_RF - RF acceptance
6%  2. sigma_epsilon - Energy spread
7%  3. tau_epsilon - Longitudinal damping time
8%
9%  OUPUTS
10%  1. tau_q - Quantum lifetime in s
11%
12%  See Also ...
13
14%
15% Written by Laurent S. Nadolski
16
17xi = power(epsilon_RF,2)/2./power(sigma_epsilon,2);
18
19tau_q = tau_epsilon/2./xi.*exp(xi);
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