The following thresholds were used for transport:
Electrons-positrons | 1 MeV |
Photons | 0.1 MeV |
Neutrons | 10-11 MeV |
Antineutrons | 50 MeV |
All other particles | 0.1 MeV |
The results of simulations are presented in 2 tables:
- Table 1. Fluences and doses.
- Table 2. Particle spectra.
Fluences of neutrons, charged hadrons, electrons-positrons, high-energy
hadrons (Ekin > 20 MeV) and 1MeV-neutrons equivalent fluence for Si are shown in units of
particles per square cm per collision.
Dose is presented in units of Gy per collision.
Conversion factor per second with a luminosity L = 2*1032 is equal to 1.6*107.
Each cell of table 1 represents a 2D map of fluence of particular type of particles or dose for particular plane crossing the detector.
Below the list of planes is shown with their positions and dimensions (in cm).
Name |
x-positions, no of bins | y-positions, no of bins | z-position, no of bins |
HCAL | 20 – 600, 29 | 20 – 500, 24 | 1333.0 – 1333.07, 1 |
ECAL | 20 – 600, 29 | 20 – 500, 24 | 1248.5 – 1248.57, 1 |
SPD-PS | 20 – 600, 29 | 20 – 500, 24 | 1230.5 – 1230.57, 1 |
RICH1 * | 5-150, 29 | 5-125, 24 | 100.0 – 101.0, 1 |
RICH2 | 20 – 600, 29 | 20 – 500, 24 | 1147.0 – 1147.07, 1 |
OT2 | 10 – 350, 34 | 10 – 300, 29 | 228.0 – 228.07, 1 |
OT3 * | 10 – 350, 34 | 10 – 300, 29 | 346.0 – 346.07, 1 |
OT4 * | 10 – 350, 34 | 10 – 300, 29 | 604.0 – 604.07, 1 |
OT5 * | 10 – 350, 34 | 10 – 300, 29 | 704.0 – 704.07, 1 |
OT6 * | 10 – 350, 34 | 10 – 300, 29 | 783.0 – 783.07, 1 |
OT7 | 10 – 350, 34 | 10 – 300, 29 | 829.0 – 829.07, 1 |
OT8 | 10 – 350, 34 | 10 – 300, 29 | 875.0 – 875.07, 1 |
OT9 | 10 – 350, 34 | 10 – 300, 29 | 921.0 – 921.07, 1 |
IT2 | 5 – 55, 50 | 5 – 55, 50 | 228.0 – 228.07, 1 |
IT3 * | 5 – 55, 50 | 5 – 55, 50 | 346.0 – 346.07, 1 |
IT7 | 5 – 55, 50 | 5 – 55, 50 | 829.0 – 829.07, 1 |
IT8 | 5 – 55, 50 | 5 – 55, 50 | 875.0 – 875.07, 1 |
IT9 | 5 – 55, 50 | 5 – 55, 50 | 921.0 – 921.07, 1 |
X-Section @ x=0.0* | 0.0 – 1.0, 1 | 10 – 400, 39 | 100 – 2000, 38 |
X-Section @ x=200* | 200.0 – 201.0, 1 | 10 – 400, 39 | 100 – 2000, 38 |
X-Section @ x=600 | 600.0 – 600.07, 1 | 10 – 400, 39 | 100 – 2000, 38 |
Floor | -550.0 – 2000.0, 51 | -606.07 - -606.0, 1 | 300 – 1900, 32 |
X-Section @ x=0.0*(Vertex) | 0.0 - 1.0, 1 | 5.0 - 200.0, 39 | -200.0 - 600.0, 80.0 |
X-section @ y=0.0*(Vertex) | 5.0 - 200.0, 39 | 0.0 - 1.0, 1 | -200.0 - 600.0, 80.0 |
X-section @ z=70* | 0.0 - 300.0, 60 | 5.0 - 250.0, 49 | 70.0 - 71.0, 1.0 |
X-section @ z=20* | 0.0 - 300.0, 60 | 5.0 - 250.0, 49 | 20.0 - 21.0, 1.0 |
X-section @ z=0* | 0.0 - 300.0, 60 | 5.0 - 250.0, 49 | 0.0 - 1.0, 1.0 |
X-section @ z=-20* | 0.0 - 300.0, 60 | 5.0 - 250.0, 49 | -20.0 - 21.0, 1.0 |
VELO Sensor @~70cm | 0.0 - 5.0, 25 | 0.0 - 5.0, 25 | 73.47 - 73.5, 1 |
VELO Sensor @~20cm | 0.0 - 5.0, 25 | 0.0 - 5.0, 25 | 21.47 - 21.5, 1 |
VELO Sensor @~0cm | 0.0 - 5.0, 25 | 0.0 - 5.0, 25 | 0.47 - 0.5, 1 |
VELO Sensor @~-20cm | 0.0 - 5.0, 25 | 0.0 - 5.0, 25 | -17.5 - -17.53, 1 |
VELO Support @ ~70cm* | 5.0 - 50.0, 49 | 0.0 - 11.0, 22 | 73.6 - 73.7, 1 |
VELO Support @ ~20cm* | 5.0 - 50.0, 49 | 0.0 - 11.0, 22 | 21.6 - 21.7, 1 |
VELO Support @ ~0cm* | 5.0 - 50.0, 49 | 0.0 - 11.0, 22 | 0.6 - 0.7, 1 |
VELO Support @ ~-20cm* | 5.0 - 50.0, 49 | 0.0 - 11.0, 22 | -17.4 - -17.3, 1 |
Material of all scoring volumes except of the cases, marked with * in the table
, is silicon. In the cross-sections at X=0 and X=200 no special material is introduced. The dose is
scored in the actual material of the detector present in each point of the scoring volume.
For the rest of the cases material is air.
Each map is presented in the form of color figure (ps-file) and text file (2D PAW vector). See above for the binning.
Accuracy of the data on fluences and doses depends on particles statistics in particular locations. No systematic analysis was performed regarding this issue. In practice one can estimate the statistical accuracy from the map itself. It varies from ~30% for neutron fluence in the central part of calorimeters to factor 10 for hadron fluence in the cavern. Particular care has to be taken when analysing data on doses. In case of small binning large dose fluctuations are possible due to heavily ionising particles (see for example doses for Inner tracker locations).
Particle spectra in table 2 are presented in two forms:
The list of the volumes where particle spectra are scored with their positions and dimensions (in cm) is shown below:
Name |
x-pos | y-pos | z-pos |
Floor | 1000 – 2000 | -606.07 - -606.0 | 300 – 1900 |
OT2 | 10 – 350 | 10 – 300 | 228.0 – 228.07 |
OT3 | 10 – 350 | 10 – 300 | 346.0 – 346.07 |
OT9 | 10 – 350 | 10 – 300 | 921.0 – 921.07 |
HCAL | 0 – 420 | 340 – 500 | 1333.0 – 1333.07 |
RICH2 | 0 – 380 | 320 – 500 | 1147.0 – 1147.07 |
Spectra of electrons-positrons, charged hadrons and charged pions have 12 bins in
logarithmic scale from 0.1 MeV to 100GeV. Spectra of neutrons have 80 bins in log scale
from 10-11 MeV to 100 GeV.
Each EdF/dE spectrum is represented in the form of figure (ps-file) combining data for
neutrons, charged hadrons, charged pions and electrons-positrons. Corresponding text file
(2D PAW vector) combines data for charged hadrons (column 2), charged pions (column 3) and
electron-positrons (column 3). The first column is energy in GeV. Dimensions of the vector are
4*12.
Each cumulative spectrum is represented in the form of figure (ps-file) and text file (2D
PAW vector) that combines cumulative data (column 2) and EdF/dE data (column 3) for
neutrons. The first column is energy in GeV. Dimensions of the vector are 3*80.