Settings for the rangeCut value in Mokka and MipPerGeV factor in digitization

rangeCut

In simulations of Cern07 data the setting

/mokka/init/rangeCut     0.05 mm

has to be included in the Mokka steering file.

MipPerGeV

This simulated data has to be digitized with the following steering parameter in the IntegratedHcalDigitizationProcessor:

MipPerGeV     0.000816

These two setting belong together. It is not recommended to to edit one of them, because this would result in significant changes in the output.

Details

rangeCut scan with
* particles: 80GeV muons
* Mokka version: mokka-06-08-p01-calice
* geant4 tag: 09-02
* detector model TBCern0807 p0709
* TimeCut 150 ns
* Birks law ON
MPV avlues versus rangeCut value for simulated 80GeV muons - Birks law ON

rangeCut scan with
* particles: 80GeV muons
* Mokka version: mokka-06-08-p01-calice
* geant4 tag: 09-02
* detector model TBCern0807 p0709
* TimeCut 150 ns
* Birks law OFF
MPV avlues versus rangeCut value for simulated 80GeV muons- Birks law OFF

MPV study - CERN07

Influence of geant4 tag, Birks law, rangeCut
Muon: 80GeV

Test-Nr.

Mokka Version

Geant4 tag

Detector model

Birks law

Time cut

rangeCut

GeVtoMIP

1

mokka-06-06-p03

geant4-09-00-patch-01

TBCern07_01

off

0ns

0.05mm

861keV

2

mokka-06-08-p01-calice

geant4-09-00-patch-01

TBCern07_01

off

0ns

0.05mm

861keV

3

mokka-06-08-p01-calice

geant4-09-02

TBCern07_01

off

0ns

0.05mm

828keV

4

mokka-06-08-p01-calice

geant4-09-02

TBCern07_01

on

150ns

0.05mm

816keV

5

mokka-06-08-p01-calice

geant4-09-02

TBCern0807_p0709

off

0ns

0.005mm

828keV

6

mokka-06-08-p01-calice

geant4-09-02

TBCern0807_p0709

on

0ns

0.005mm

798keV

7

mokka-06-08-p01-calice

geant4-09-02

TBCern0807_p0709

on

150ns

0.005mm

798keV

8

mokka-06-08-p01-calice

geant4-09-02

TBCern0807_p0709

on

150ns

0.05mm

816keV

9

mokka-07-02

geant4-09-03

TBCern0807_p0709

on

150ns

0.05mm

816keV

MPV study - FNAL08

Influence of geant4 tag, Birks law, rangeCut
Muon: 32GeV

Test-Nr.

Mokka Version

Geant4 tag

Detector model

Birks law

Time cut

rangeCut

GeVtoMIP

1

mokka-07-02

geant4-09-03

TBFnal0508_p0709

on

150ns

0.05mm

816keV

2

mokka-07-06

geant4-09-04

TBFnal0508_p0709

on

150ns

0.05mm

805keV

Details for FNAL08 Test-Nr. 2
Ture MPV value

The plot from Nils shows the hit energy for raw MC muons at 32 GeV and the fit of a Landau distribution applied to it. The red line indicates the position of the maximum of the landau distribution (the 'true' MPV), whereas the blue line indicates the position returned by ROOT's GetMPV() function.
The values for these different parameters at 32 and 80 GeV are

* muon energy: 32 GeV -> peak at 804.321 keV (ROOT MPV: 815.402 keV)
* muon energy: 80 GeV -> peak at 804.794 keV (ROOT MPV: 815.988 keV)

Currently we use the ROOT MPV for 80 GeV muons (816 keV) in our digitization.
Now the true MPV position of 805 keV will be used.

MipPerGeV and Mokka rangeCut (last edited 2012-02-13 16:33:44 by ShaojunLu)