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View Code? Open in Web Editor NEWBeam beam macros to setup tracking simulations
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Writing rights on afs folder
Document definition crossing plane and crossing angle
There seems to be an inversion in the definition of the sigmaz for the strong beam
if(mylhcbeam==1)
{
beamx = beam%lhcb2->ex;
beamy = beam%lhcb2->ey;
sigz = beam%lhcb1->sigt;
sige = beam%lhcb1->sige;
};
if(mylhcbeam==2)
{
beamx = beam%lhcb1->ex;
beamy = beam%lhcb1->ey;
sigz = beam%lhcb2->sigt;
sige = beam%lhcb2->sige;
};
Get rid of hardcoded path (Gianni's public)
system,"/afs/cern.ch/user/g/giadarol/public/beambeam_macros/headonslice";
Beambeam tags
I would move the BB tags
to the
CALCULATE_BB_LENS macro
In doing so we do not define variables outside the macros.
on_crab1 and on_crab5 are redefined
This is done based on fraction_crab and on_x1/on_x5
It is inconsistent with what is presently done in lhcmask repository (module_01)
explain bbcomm
DEFINE_BB_LENS(label,NIR,nn,flag,bbcomm)
Introduce example to test workflow
- Needs an example mask
Compatibility with old macros (in optics repository)
Port correct calculation of phi and alpha to mad macro
Already implemented and tested in python
def find_alpha_and_phi(dpx, dpy):
absphi = np.sqrt(dpx ** 2 + dpy ** 2) / 2.0
if absphi < 1e-20:
phi = absphi
alpha = 0.0
else:
if dpy>=0.:
if dpx>=0:
# First quadrant
if np.abs(dpx) >= np.abs(dpy):
# First octant
phi = absphi
alpha = np.arctan(dpy/dpx)
else:
# Second octant
phi = absphi
alpha = 0.5*np.pi - np.arctan(dpx/dpy)
else: #dpx<0
# Second quadrant
if np.abs(dpx) < np.abs(dpy):
# Third octant
phi = absphi
alpha = 0.5*np.pi - np.arctan(dpx/dpy)
else:
# Forth octant
phi = -absphi
alpha = np.arctan(dpy/dpx)
else: #dpy<0
if dpx<=0:
# Third quadrant
if np.abs(dpx) >= np.abs(dpy):
# Fifth octant
phi = -absphi
alpha = np.arctan(dpy/dpx)
else:
# Sixth octant
phi = -absphi
alpha = 0.5*np.pi - np.arctan(dpx/dpy)
else: #dpx>0
# Forth quadrant
if np.abs(dpx) <= np.abs(dpy):
# Seventh octant
phi = -absphi
alpha = 0.5*np.pi - np.arctan(dpx/dpy)
else:
# Eighth octant
phi = absphi
alpha = np.arctan(dpy/dpx)
return alpha, phi
Status of 8b4e part is not fully known
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