Event simulation for the WA80 experiment Page: 2 of 14
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SORENSEN 2/13
In f 1 g- 1 are shown contour plots of the kinetic energy per particle versus
the pseudorapidity obtained from both LUND and HI JET. Note that the HI JET
calculation is done at a slightly lower beam momentum of 200A GeV/c, as compared
to 225A GeV/c for the LUND calculation. Only central events with total par-
ticle multiplicities larger than 500 have been Included. This type of plot 1s
very useful In the design of the experimental setup since the typical energies
and the energy ranges for which the detectors at the different angles should be
sensitive can be read directly. The forward-angle detectors should be able to
detect particles with energies ranging from 1 up to 200 GeV. Detectors 1n the
m1d-rap1d1ty region should be sensitive from 100 MeV up to 10 GeV, and finally,
detectors at 90° should be sensitive 1n the range from 10 MeV to 1 GeV.
HIJET
200 A GtV/c
22S A GtV/c
(G.V)
10-' -
io-» -
1-1 -1
FIGURE 1
Contour plots of the kinetic energy versus pseudorapidity of each particle
emitted by the event generator codes LUND and HIJET. Only central events
with multiplicities larger than 500 have been selected. The outer contour
line corresponds to 1 part1cle/(energy decade)/(unit 1n n)« The contour
lines closer to the maximum then correspond to densities of 2, 4, 8, etc.
By comparing figs, la and lb, 1t 1s seen that the predictions of the two
event generators are very similar and that most of the small differences are
caused by the slightly lower beam energy In the HIJET case, Different event
selections can be defined: (a) minimum bias, where all events generated by the
codes are Included; (b) peripheral, where only events with multiplicities lower
than, e.g.t 100 are selected; (c) charged particles, where only the charged
particles within each event are studied; (d) *°, where only the photons coming
from n° decay are selected, etc. For all these cases the LUND and HIJET
models give very similar predictions when plotted In an E^p vs. n plane.
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Sorensen, S.P. Event simulation for the WA80 experiment, article, January 1, 1986; Knoxville, Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1100858/m1/2/?rotate=270: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.