
             *** CRUSH User's Manual Extension for LABOCA ***

                              Attila Kovacs
                      <attila[AT]submm.caltech.edu>

                      Last updated: 20 February 2016




Table of Contents
=================

1. Introduction

2. Calibration and Extinction Correction

3. Glossary of LABOCA-specific options

4. LABOCA-specific log quantities



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1. Introduction
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This document contains information specific to using CRUSH-2 to reduce LABOCA
data. It is assumed that you are already familiar with the contents of the main
CRUSH-2 README (inside the distribution directory), especially its Section 1
(Getting Started).

If you run into difficulty understanding the concepts in this document, you
will probably find it useful to study the main README document a little longer.




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2. Calibration and Extinction Correction
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3. Glossary of LABOCA-specific options
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:: amps			@Alias -> 'correlated.amps'
			@Advanced
                        Decorrelate on amplifier boards, or set options for it.
                        @See: 'correlated.<?>' for details on brached options.

:: boxes		@Alias -> correlated.boxes
			@Advanced
                        Decorrelate on electronic boxes, or set options for it.
                        @See: 'correlated.<?>', 'cables', 'squids'

:: cables		@Alias -> correlated.cables
			@Advanced
                        Decorrelate channels whose signals are running on the
                        same cables, and which are therefore subject to the
                        same pickups (electromagnetic or microphonic).
                        @See: 'correlated.<?>', 'boxes'

:: he3=<source>		@Advanced
                        Correct time-streams for He3 temperature fluctuations.
                        <source> specifies the source of the He3 data, which
                        can be 'thermistor' or 'blinds'. The use of blind
                        bolometers is quicker and preferred, unless you
                        specifically wish to use the 'thermistors'.

:: he3.gains		@Expert
                        Specifies that rather than correcting for temperature
                        fluctuations, the thermistor and bolometer data should
                        be used to calculate appropriate temperature gains.
                        This option should only be used on skydip scans with
                        the shutter closed (i.e. only temperature signals
                        without sky). Additionally 'forget=source' should be
                        used to disable source modeling for such data.

:: he3.maxrms=X		@Expert
                        Define the maximum RMS temperature variation (Kelvin)
                        over the duration of a scan. When a scan has variation
                        larger than this limit, it will be dropped from the
                        reduction.

:: noresistors		@Expert
                        Do not use the resistor channels in the decorrelation of
                        electrinic signals, such as 'boxes', 'cables' and
                        'amps'. In LABOCA several of the readout channels are
                        connected not to light-sensitive detectors, but to
                        fixed resistors. While these are not sensitive to
                        radiation or temperature the channels will still be
                        subject to electronic pickup. Therefore, the default is
                        to use these channels when decorrelating signals, which
                        are thought to originate within the electronics. This
                        option can be used to overrride this behavior, and
                        restrict all decorrelation steps to detector channels
                        only.
                        @See: 'boxes', 'cables', 'amps'

:: range.auto		@Expert
			@Since: 2.03
                        Set the ADC range automatically using the actual
                        backend gain setting
                        @See: 'range'

:: scale.window=X       @Expert
                        @Since: 2.13
                        Set the 1-sigma Gaussian weighting window (in hours)
                        for deriving local weighted average scaling values from
                        a table of calibrattion measurements.
                        @See: 'scale', 'tau.window'

:: twisting		@Alias: -> correlated.twisting	
			@Expert
                        Enable the decorrelation of signals that correspond to
                        twisting flexible band cables, or set options for it.
                        @See: 'correlated.<?>', 'cables'




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4. LABOCA-specific log quantities
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	rmsHe3		RMS He3 temperature fluctutations (mK).
	

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Copyright (C)2016 -- Attila Kovacs <attila[AT]submm.caltech.edu>   

