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Name | Particle | Mass [MeV] | Charge |
---|---|---|---|
ELECTRON
| electron (e-) | 0.51099907 | -1 |
POSITRON
| positron (e+) | 0.51099907 | +1 |
MU-MINUS
| negative muon (mu-) | 105.658389 | -1 |
MU-PLUS
| positive muon (mu+) | 105.658389 | +1 |
TAU-MINUS
| negative tau (tau-) | 1777.00 | -1 |
TAU-PLUS
| positive tau (tau+) | 1777.00 | +1 |
GAMMA
| photon | 0 | 0 |
PION-MINUS
| negative pion (pi-) | 139.56995 | -1 |
PION-0
| neutral pion (pi0) | 134.9764 | 0 |
PION-PLUS
| positive pion (pi+) | 139.56995 | +1 |
KAON-MINUS
| negative kaon (K-) | 493.677 | -1 |
KAON-0
| neutral K or anti-K | 497.672 | 0 |
KAON-PLUS
| positive kaon (K+) | 493.677 | +1 |
PROTON
| proton (p) | 938.27231 | +1 |
ANTI-PROTON
| antiproton (p-bar) | 938.27231 | -1 |
NEUTRON
| neutron (n) | 939.56563 | 0 |
ANTI-NEUTRON
| antineutron (n-bar) | 939.56563 | 0 |
Although some neutral particles are included in this list, their use is, with the exception of photons, not meaningful since these particles do not cause ionisation losses in the Heed model.
Gamma's are scheduled for inclusion at a later stage.
The mass can either be a number, in which case it is assumed to be in MeV, or a number followed by a unit (eV, keV, MeV or GeV).
[Default: muon mass]
The charge of the particle should be in proton charges, i.e. an electron would have charge -1, a K+ would have +1.
Currently, only charges of +1 and -1 are accepted.
The energy can either be a number, in which case it is assumed to be in MeV, or a number followed by a unit (eV, keV, MeV or GeV).
[Default: 1 GeV]
Keep in mind that multiple scattering will slow Heed down.
Track preparation is compatible with multiple scattering but such a combination is not meaningful since the drift path of electrons produced far from the prepared track has to be computed without interpolation.
[Multiple scattering is on by default.]
The DELTA-ELECTRONS option is compatible with track preparation, e.g. in the context of signal calcultions, but the drift path of electrons produced far from the prepared track will be computed rather than interpolated.
Apart from this, there is no substantial gain in time by switching delta electrons off.
[Delta electrons are by default kept as they come out of Heed]
When this option is switched on, they are traced from one collision to the next following the E and B field. Since this is a time consuming operation, you may wish to switch tracing off when studying only the cluster statistics.
Delta electrons are not traced either when the NODELTA-ELECTRONS option is specified.
[Tracing is on by default.]
Formatted on 0100-08-24 at 22:37.