Const (LCSim 3.1.7 API)

java.lang.Object
- org.lcsim.recon.cat.util.Const

All Implemented Interfaces:

EventListener, ConditionsListener
```
public class Const
extends Object
implements ConditionsListener
```
The class provides access to general use constants and SiD-specific detector information.
Units, physics constants and frequently used particles PGD encodings are defined as static fields. Default units (those equal to 1.0) are millimeter, second, Tesla, and GeV.
Detector-specific constants are accessible through an instance of Const that can be obtained with a call to Const.det(). These constants are initialized automatically once the detector information becomes available, and updated if the detector changes. An attempt to call det() before the detector classes have been initialized by the framework (usually just before the first event processing starts) will throw NullPointerException.

Version:

$Id: Const.java,v 1.1 2007/04/06 21:48:15 onoprien Exp $

Author:

D. Onoprienko

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class Const.Particle

class Const.SubDet
Helper class that contains parameters of one of the tracking subdetectors.

Nested Classes
Modifier and Type	Class and Description
`static class`	`Const.Particle`
`class`	`Const.SubDet` Helper class that contains parameters of one of the tracking subdetectors.

Field Summary

Fields
Modifier and Type	Field and Description
`private double`	`_bField`
`private static Const`	`_det`
`private Detector`	`_detector`
`private ArrayList<Const.SubDet>`	`_subDetList`
`static double`	`centimeter`
`static double`	`cm`
`static double`	`degree`
`static double`	`eV`
`static double`	`GeV`
`static double`	`m`
`static double`	`meter`
`static double`	`MeV`
`static double`	`micrometer`
`static double`	`microsecond`
`static double`	`millimeter`
`static double`	`millisecond`
`static double`	`mm`
`static double`	`nanosecond`
`static double`	`sec`
`static double`	`second`
`static double`	`SPEED_OF_LIGHT`
`static double`	`Tesla`
`static double`	`TeV`
`Const.SubDet`	`TRACKER_BARREL`
`Const.SubDet`	`TRACKER_ENDCAP`
`Const.SubDet`	`TRACKER_FORWARD`
`Const.SubDet`	`VXD_BARREL`
`Const.SubDet`	`VXD_ENDCAP`

Constructor Summary

Constructors
Modifier Constructor and Description

private Const()

Constructors
Modifier	Constructor and Description
`private`	`Const()`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`conditionsChanged(ConditionsEvent event)` Called by the framework when the detector information changes.
`static Const`	`det()` Returns an instance of `Const` that can be used to retrieve various detector parameters.
`private Const.SubDet`	`get(int sysID)`
`private Const.SubDet`	`get(Subdetector subdetector)`
`boolean`	`is3D(int sysID)` Returns `true` if tracking subdetector with system ID supplied as an argument provides 3-demensional measurement (silicon pixels).
`boolean`	`is3D(Subdetector sub)` Returns `true` if tracking subdetector supplied as an argument provides 3-demensional measurement (silicon pixels).
`boolean`	`isEndcap(int sysID)` Returns `true` if tracking subdetector with system ID supplied as an argument is an endcap.
`boolean`	`isEndcap(Subdetector sub)` Returns `true` if tracking subdetector supplied as an argument is an endcap.
`boolean`	`isVXD(int sysID)` Returns `true` if tracking subdetector with system ID supplied as an argument is a part of the vertex detector.
`boolean`	`isVXD(Subdetector sub)` Returns `true` if tracking subdetector supplied as an argument is a part of the vertex detector.
`int`	`nLayers(int sysID)` Returns number of layers in the tracking subdetector with system ID supplied as an argument.
`int`	`nLayers(Subdetector sub)` Returns number of layers in the tracking subdetector supplied as an argument.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - mm
```
public static final double mm
```
    See Also:
    Constant Field Values
  - millimeter
```
public static final double millimeter
```
    See Also:
    Constant Field Values
  - meter
```
public static final double meter
```
    See Also:
    Constant Field Values
  - m
```
public static final double m
```
    See Also:
    Constant Field Values
  - centimeter
```
public static final double centimeter
```
    See Also:
    Constant Field Values
  - cm
```
public static final double cm
```
    See Also:
    Constant Field Values
  - micrometer
```
public static final double micrometer
```
    See Also:
    Constant Field Values
  - second
```
public static final double second
```
    See Also:
    Constant Field Values
  - sec
```
public static final double sec
```
    See Also:
    Constant Field Values
  - millisecond
```
public static final double millisecond
```
    See Also:
    Constant Field Values
  - microsecond
```
public static final double microsecond
```
    See Also:
    Constant Field Values
  - nanosecond
```
public static final double nanosecond
```
    See Also:
    Constant Field Values
  - Tesla
```
public static final double Tesla
```
    See Also:
    Constant Field Values
  - GeV
```
public static final double GeV
```
    See Also:
    Constant Field Values
  - TeV
```
public static final double TeV
```
    See Also:
    Constant Field Values
  - MeV
```
public static final double MeV
```
    See Also:
    Constant Field Values
  - eV
```
public static final double eV
```
    See Also:
    Constant Field Values
  - degree
```
public static final double degree
```
    See Also:
    Constant Field Values
  - SPEED_OF_LIGHT
```
public static final double SPEED_OF_LIGHT
```
    See Also:
    Constant Field Values
  - VXD_BARREL
```
public final Const.SubDet VXD_BARREL
```
  - VXD_ENDCAP
```
public final Const.SubDet VXD_ENDCAP
```
  - TRACKER_BARREL
```
public final Const.SubDet TRACKER_BARREL
```
  - TRACKER_ENDCAP
```
public final Const.SubDet TRACKER_ENDCAP
```
  - TRACKER_FORWARD
```
public final Const.SubDet TRACKER_FORWARD
```
  - _det
```
private static Const _det
```
  - _detector
```
private Detector _detector
```
  - _subDetList
```
private ArrayList<Const.SubDet> _subDetList
```
  - _bField
```
private double _bField
```
- Constructor Detail
  - Const
```
private Const()
```
- Method Detail
  - det
```
public static Const det()
```
    Returns an instance of Const that can be used to retrieve various detector parameters.
  - isEndcap
```
public boolean isEndcap(Subdetector sub)
```
    Returns true if tracking subdetector supplied as an argument is an endcap.
  - isEndcap
```
public boolean isEndcap(int sysID)
```
    Returns true if tracking subdetector with system ID supplied as an argument is an endcap.
  - isVXD
```
public boolean isVXD(Subdetector sub)
```
    Returns true if tracking subdetector supplied as an argument is a part of the vertex detector.
  - isVXD
```
public boolean isVXD(int sysID)
```
    Returns true if tracking subdetector with system ID supplied as an argument is a part of the vertex detector.
  - is3D
```
public boolean is3D(Subdetector sub)
```
    Returns true if tracking subdetector supplied as an argument provides 3-demensional measurement (silicon pixels).
  - is3D
```
public boolean is3D(int sysID)
```
    Returns true if tracking subdetector with system ID supplied as an argument provides 3-demensional measurement (silicon pixels).
  - nLayers
```
public int nLayers(Subdetector sub)
```
    Returns number of layers in the tracking subdetector supplied as an argument.
  - nLayers
```
public int nLayers(int sysID)
```
    Returns number of layers in the tracking subdetector with system ID supplied as an argument.
  - conditionsChanged
```
public void conditionsChanged(ConditionsEvent event)
```
    Called by the framework when the detector information changes.
    
    Specified by:
    
    conditionsChanged in interface ConditionsListener
    
    Parameters:
    event - The event associated with the change.
  - get
```
private Const.SubDet get(Subdetector subdetector)
```
  - get
```
private Const.SubDet get(int sysID)
```

Class Const

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

mm

millimeter

meter

m

centimeter

cm

micrometer

second

sec

millisecond

microsecond

nanosecond

Tesla

GeV

TeV

MeV

eV

degree

SPEED_OF_LIGHT

VXD_BARREL

VXD_ENDCAP

TRACKER_BARREL

TRACKER_ENDCAP

TRACKER_FORWARD

_det

_detector

_subDetList

_bField

Constructor Detail

Const

Method Detail

det

isEndcap

isEndcap

isVXD

isVXD

is3D

is3D

nLayers

nLayers

conditionsChanged

get

get