Detector Types
==============
1. Neutron Monitor
2. Solar Neutron Telescope
3. Multidirectional Muon Monitor

Sensor Types
============
temperature		Temperature sensor
pressure		Pressure sensor
humidity		Humidity sensor
scintillator		Scintiallation sensor
magn			Geomagnetic sensor 

Channels
========
The channel types can be specified in two different ways. For the channels 
directly (and uniqually) associated with sensor the type (and options) are
specified using "SensorType" "DefaultSensorType" nodes within "Info" branch.
This nodes are structured almostly in the same way as the Sensor descriptions 
within the "Geometry" branch. However, they are specifying the information 
about the associated data channels and not the sensors itself.
Since addressing in that case are not connected with the used logical layout, 
this method is the best then applicable. However, in some cases the multiple 
data  channels are associated with single sensor. In this case data channels
can not be uniqually indentified by the associate sensor and other approach
should be used. The Coincidences and other channels associated with special 
conditions can not be described by this method as well. To describe such data 
the "ChannelType" and "DefaultChannelType" nodes are used. They address the 
data channels by means of the Channel IDs from the "Layout" branch (equal to 
the value position in the data vector) However, the special care should be 
taken in the case of the logical layout changes.

Both methods can be mixed in the single description. The next string describes 
Coincidence channels for the NAMMM detector.
	<ChannelType type="intensity_muon">13-55</ChannelType>

The example utilizing sensor based description is illustrated below.
	<Layer id="1">
	    <DefaultSensorType type="intensity_muon"/>
	</Layer>
	<Layer id="2">
	    <SensorType type="intensity_muon">1,2</SensorType>
	    <SensorType type="intensity_muon">4-6</SensorType>
	</Layer>


Channel Types
=============
temperature		Temperature
pressure		Pressure
humidity		Humidity
voltage			Sensor Voltage
threshold		Sensor Threshold
intensity		Intesety of the events
intensity_eas		Intensity of the EAS events
intensity_charged	Intensity of the incident charged particle flux
intensity_muon		Intensity of the incident muon flux
intensity_neutron	Intensity of the incident neutron flux
intensity_cn		Intensity of the incident flux of neutrons and charged particles
adc			Analog-Digital Converter Output
magnx			Magnetic Field: X Component
magny			Magnetic Field: Y Component
magnz			Magnetic Field: Z Component

Channel Options
===============
id			Channel unique ID number
layer, sensor		ID of the sensor used to obtain channel value
type			Channel Type
units			Enginnering Units
low, high		Minimal and maximal values likely to be obtained in
			normal operation
energy_min, energy_max	Maximal and minimal energy of the particles registered
			by the detector (MeV by default)
direction		The particle comming direction, 
			for coincidences: <a>-<b>-<c>, where a, b and c contain
			information about sensors detected signal in each layer.
			    #. The ID of the sensor registered the signal in
			       the layer. The signal had not been detected by
			       any other sensors in that layer.
			    z. The signal is not registered by any sensor in
			       the layer.
			    s. The signal is registered by one or more sensors
			       in the layer.
			    o. The signal is registered by the single sensor 
			       in the layer. The ID is not specified.
			    m. The signal is registeered by the multiple 
			       sensors in the layer.
			    ?. No restrictions for that layer. All combinations
			       are possible.
description		Short channel description