Transcript Preliminary results of LumiCal simulation

Institute of Physics, Prague
Petr Mikes / Lukas Masek
Krakow Feb.06
1. Description of current geometry and future upgrades.
2. Preliminary GEANT simulations of LumiCal.
3. Future steps.
Krakow Feb.06
Strip version:
Number of Layers
= 30
Number of Segments = 24
Number of Cylinders = 10
Krakow Feb.06
Thungsten (2.5 mm)
new G4Material(“Thungsten", 74., 183.84*g/mole, 19.250*g/cm3,
kStateSolid, 273.15*kelvin, 1.0*atmosphere );
Thin Layers of
thungsten
Silicon (0.3 mm)
new G4Material("Silicon", 14., 28.0855*g/mole, 2.330*g/cm3,
kStateSolid, 273.15*kelvin, 1.0*atmosphere );
Electronic board (0.8 mm)
G4Material* Ka = new G4Material("Kapton",1.43*g/cm3,
ncomponents=4);
Ka->AddElement(elC,natoms=22);
Ka->AddElement(elH,natoms=10);
Ka->AddElement(elN,natoms=2);
Ka->AddElement(elO,natoms=5);
density = (fractionmass1/100*1.43 +
fractionmass2/100*8.960)*g/cm3;
G4Material*Electronic = new G4Material("Electronic_board",
density, ncomponents=2);
Electronic->AddMaterial(Ka, fractionmass1*perCent);
Electronic->AddMaterial(Cu, fractionmass2*perCent);
Air (1.2 mm)
G4Material* Air =new G4Material("Air", 1.290*mg/cm3, 2);
Air->AddElement( elN, 0.7);
Air->AddElement( elO, 0.3);
Krakow Feb.06
Change geometry to Maximum Peak Shower Design.
Help to Bogdan Pawlik with implementation to MOKKA.
Use both sides of detector and use Bhabha generator.
4 rings
15 rings
11 rings
10
20
10
cylinders
cylinders
cylinders
Krakow Feb.06
GOALS:
Cooperate with HEP Experimental group, TAU (Ronen Ingbir,
Sergey Kananov).
Create simulation group in Prague (Petr Mikes, Lukas Masek,
Jaroslav Klaus).
Make GEANT simulations of LumiCal for different particles and
energies and optimize its parameters.
Krakow Feb.06
Krakow Feb.06
100 GeV
10
<z>
[cm]
9
8
7
6
5
4
0
[mm]
50
100
150
200
250
energy [GeV]
<z> = zi*Ei / Ei
x and y are still not sensitive, problem with copy numbers
Simulations are quite slow, need optimizations.
Krakow Feb.06
Geometry
We still need few weeks for finish our setup: Set Sensitivity for x
and y, change geometry to Max. Peak Shower Design, use MOKKA
design (work simultaneosly with Bogdan Pawlik).
Simulations:
When setup is done, start testing LumiCal with different particles,
energies, beam position, different number of cylinders and sements
etc. Work simultaneously with TAU (Ronen Ingbir, Sergey Kananov).
Use computer farm GOLIASH situated in ASCR for faster
simulations (Jaroslav Klaus).
Be in the contact with OM Semiconductors for producing wafers for
LumiCal.
Krakow Feb.06
I hope in constructive cooperation
THANK YOU
Krakow Feb.06