mptest2.f90 File Reference

MC for simple 10 layer silicon strip tracker. More...

Go to the source code of this file.

Data Types
module	mptest2
	Parameters and data. More...

Functions/Subroutines
subroutine	mptst2 (imodel)
	Generate test files.
subroutine	genln2 (ip)
	Generate line and measurements.

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Detailed Description

MC for simple 10 layer silicon strip tracker.

No B-field, straight tracks. Selected with command line option '-t=track-model' The track-models differ in the implementation of multiple scattering (errors):

• SL0: Ignore multiple scattering. Fit 4 track parameters.
• SLE: Ignore correlations due to multiple scattering, use only diagonal of m.s. covariance matrix. Fit 4 track parameters.
• BP: Intoduce explicit scattering angles at each scatterer. Fit 4+2*(nmlyr-2) parameters. Matrix of corresponding linear equation system is full and solution is obtained by inversion (time ~ parameters^3).
• BRLF: Use (fine) broken lines (see References). Multiple scattering kinks are described by triplets of offsets at scatterers as track parameters. Fit 4+2*(nmlyr-2) parameters. Matrix of corresponding linear equation system has band structure and solution is obtained by root-free Cholesky decomposition (time ~ parameters).
• BRLC: Use (coarse) broken lines. Similar to BRLF, but with stereo layers combined into single layer/scatterer. Fit 4+2*(nlyr-2) parameters.

MC for simple silicon strip tracker:

• 10 silicon detector layers
• 50 modules per layer (1*2cm)
• 10 cm spacing, no B-field
• layers 1,4,7,10 have additional +/-5deg stereo modules
• intrinsic resolution 20mu, 2% X0 per strip module
• uniform track offsets/slopes
• momentum: log10(p) 10..100 GeV uniform

Global parameters:

• Position offsets (2D) in measurement plane per module (alignment).

Definition in file mptest2.f90.

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Function/Subroutine Documentation

subroutine genln2

(

integer, intent(in)

ip

)

Generate line and measurements.

Parameters:

[in]

ip

print flag

Definition at line 403 of file mptest2.f90.

References gran(), and uran().

Referenced by mptst2().

subroutine mptst2

(

integer, intent(in)

imodel

)

Generate test files.

Create text and binary files.

 unit  8: textfile mp2str.txt   = steering file
 unit  9: textfile mp2con.txt   = constraint file
 unit 51: binary file mp2test.bin, written using CALL MILLE(.)
 existing file are removed

Parameters:

[in]

imodel

track model 0: 'straight line', ignoring multiple scattering 1: 'straight line', using diagonal of m.s. error matrix 2: 'break points' 3: 'broken lines', fine 4: 'broken lines', coarse (stereo layers combined)

Definition at line 90 of file mptest2.f90.

References genln2(), gran(), mille(), and uran().

Referenced by filetc().