def get_mcf(accelerator, order=1, energy_offset=None):
"""Return momentum compaction factor of the accelerator"""
if energy_offset is None:
energy_offset = _np.linspace(-1e-3, 1e-3, 11)
accel = accelerator[:]
_tracking.set_4d_tracking(accel)
ring_length = _lattice.length(accel)
dl = _np.zeros(_np.size(energy_offset))
for i in range(len(energy_offset)):
fp = _tracking.find_orbit4(accel, energy_offset[i])
X0 = _np.concatenate([fp, [energy_offset[i], 0]]).tolist()
T = _tracking.ring_pass(accel, X0)
dl[i] = T[0][5] / ring_length
polynom = _np.polyfit(energy_offset, dl, order)
a = _np.fliplr([polynom])[0].tolist()
a = a[1:]
if len(a) == 1:
a = a[0]
return a
def get_mcf(accelerator, order=1, energy_offset=None):
"""Return momentum compaction factor of the accelerator"""
if energy_offset is None:
energy_offset = _np.linspace(-1e-3,1e-3,11)
accel=accelerator[:]
_tracking.set_4d_tracking(accel)
ring_length = _lattice.length(accel)
dl = _np.zeros(_np.size(energy_offset))
for i in range(len(energy_offset)):
fp = _tracking.find_orbit4(accel,energy_offset[i])
X0 = _np.concatenate([fp,[energy_offset[i],0]]).tolist()
T = _tracking.ring_pass(accel,X0)
dl[i] = T[0][5]/ring_length
polynom = _np.polyfit(energy_offset,dl,order)
a = _np.fliplr([polynom])[0].tolist()
a = a[1:]
if len(a) == 1:
a=a[0]
return a
def length(self):
"""Lattice length in m"""
return _lattice.length(self._accelerator.lattice)
def length(self):
"""Lattice length in m"""
return _lattice.length(self._accelerator.lattice)