Package org.jlab.rec.eb

Class EBScalers

java.lang.Object

org.jlab.rec.eb.EBScalers

public class EBScalers
extends Object

Deprecated.

Moved to decoding, see org.jlab.detector.decode.DaqScalers See https://logbooks.jlab.org/comment/14616 The EPICS equation for converting fcup scaler S to beam current I: I [nA] = (S [Hz] - offset ) / slope * attenuation; The (32 bit) 1 MHz DSC2 clock rolls over every ~35 minutes. We instead try to use the (48 bit) TI 4-ns timestamp, by storing the first timestamp in the run. Probably this will have to be done post-processing, e.g. in trains, where we can process the full run in one shot. FIXME: Use CCDB for GATEINVERTED, CLOCKFREQ, CRATE/SLOT/CHAN

Read the occaisonal scaler bank and store across events.

Author:

baltzell

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EBScalers.Reading	Deprecated.

Constructor Summary

Constructors

Constructor	Description
EBScalers()	Deprecated.

Method Summary

Modifier and Type	Method	Description
EBScalers.Reading	readScalers(DataEvent event, EBCCDBConstants ccdb)	Deprecated. This returns the most recent available scaler info.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

EBScalers

public EBScalers()

Deprecated.

Method Details

readScalers

public EBScalers.Reading readScalers(DataEvent event,
 EBCCDBConstants ccdb)

Deprecated.

This returns the most recent available scaler info. If events are misordered, this is the scaler info with the most recent TI timestamp.