Status of MAPS Geometry Simulation

Yoshinari Mikami

University of Birmingham

17th MAY 2006

MAPS Meeting at Rutherford Appleton Laboratory

Outline

Cell size dependence

Mokka-06-00 and LCIO-v01-07 are used. (Two cellIDs are available.)

25mm x 25mm ~ 100mm x 100mm cell size variation.

Incoming Single Electron Energy dependence

Default geometry, MAPS thickness and MAPS geometry

Single muon test

Comparison between default and MAPS thickness

Comparison with other energy deposit distribution.

Cell size dependence

All plots are:

100 GeV Single e- 5,000 events

with sensitive thickness is 15mm.

#Cell Hits / Event

Mean Energy of Cell Hits

Energy Deposit / Event

Consistency check

3.88 MeV/cm (Si dE/dx) x 15mm

= 5.82 KeV

More small cell is interesting.

Mean Energy of Cell Hits
with
Incoming Single e- Energy dependence

Error bar is within

in next slide

zoom up

Mean Energy of Cell Hits
with
Incoming Single e- Energy dependence

MAPS Energy deposit dose NOT depend

on incoming electron beam energy !

Clearly Single Hit Behavior !

Error bar is within

Mean Energy of Cell Hits
with
Incoming Single e- Energy dependence
& Cell size variation

Mean Energy of Cell Hits

Default (500mm thickness,

1cm X 1cm cell)

MAPS thickness (15mm thickness,

1cm X 1cm cell)

MAPS (15mm thickness,

50mm X 50mm cell)

20 GeV e-

100 GeV e-

fraction

1360 +/-19

KeV

61.7 +/- 0.9

KeV

7.10+/-0.10

KeV

2590 +/-37

KeV

121 +/- 1.7

KeV

7.19+/-0.10

KeV

(190+/-3.8)%

(196+/-2.8)%

(101.3+/-2.0)%

(100GeV/20GeV)

MAPS (15mm thickness,

100mm X 100mm cell)

8.30 +/-0.26

KeV

8.62+/-0.27

KeV

(103.9+/-4.6)%

MAPS (15mm thickness,

25mm X 25mm cell)

5.71 +/- 0.18

KeV

5.73+/-0.18

KeV

(100.4+/-4.5)%

#Cell Hits / Event
with
Incoming Single e- Energy Dependence

Error bar is within

Energy Deposit / Event
with
Incoming Single e- Energy Dependence

Linear dependence respectively

Fraction compared with default

20 GeV mu-

500mm thickness

1cm X 1cm cell

(5,000 events)

Single Muon Energy Deposit (Under study)

20 GeV mu-

15mm thickness

1cm X 1cm cell

(5,000 events)

- #Cell_hits / event = 78.7+/- 1.1 (stat)

- Mean E of Cell_hits = 100 +/- 1.4 KeV

- E deposit / event = 7.87 +/- 0.11 MeV

MAPS/Default ratio for mean energy of Cell_hits = (3.72 +/- 0.07) %

MAPS/Default ratio for energy deposit per event = (3.68 +/- 0.07) %

#Cell_hits / event = 77.8 +/- 1.1 (stat)

E deposit / event = 289.8 +/- 4.1 KeV

Mean E of Cell_hits = 3.72 +/- 0.05 KeV

40 layers means #Cell_hits / layer ~ 2 ----> Mean E / layer ~ 7.4 KeV in 15mm.

Single Electron Energy Deposit

MAPS/Default ratio for energy deposit per event = (3.16 +/- 0.06) %

20 GeV e-

15mm thickness

1cm X 1cm cell

(5,000 events)

MAPS/Default ratio for mean energy of Cell_hits = (4.31 +/- 0.09) %

20 GeV e-

500mm thickness

1cm X 1cm cell

(5,000 events)

- #Cell_hits / event = 345.4+/- 4.9 (stat)

- Mean E of Cell_hits = 1.36 +/- 0.02 MeV

- E deposit / event = 471 +/- 6.6 MeV

- #Cell_hits / event = 240.3+/- 3.4 (stat)

- Mean E of Cell_hits = 61.7 +/- 0.9 KeV

- E deposit / event = 14.8 +/- 0.2 MeV

(->Consistent with 3% thickness reduction)

Energy deposit distribution
with
Cell size dependence

50 mm X 50 mm

100mm X 100mm

100 GeV e-

15mm thickness

25mm X 25mm

Energy deposit distributions

20 GeV e-

500mm thickness

1cm X 1cm cell

20 GeV e-

15mm thickness

1cm X 1cm cell

100 GeV e-

15mm thickness

1cm X 1cm cell

20 GeV e-

15mm thickness

50mm X 50mm cell

100 GeV e-

15mm thickness

50mm X 50mm cell

default

MAPS

thickness

MAPS

20 GeV e-

100 GeV e-

(All plots are 5,000 events)

100 GeV e-

500mm thickness

1cm X 1cm cell

Status

MAPS Geometry (15mm thickness x 50mm x 50mm cell size) clearly show single hit energy deposit.

5mm x 5mm cell size is under study. (It need modification for bits assignments. <-- We can use provision bit.)

Next steps

MC study for #MIP hits / cell.

Muon test with small cell size.

Cross-talk/Multi-particle studies with physics events.

Disk/CPU consumption estimate with physics events.

Future Prospect

Position/Energy resolutions.

Status and Future Prospects

2006-04-13T09:37:56