Class HitReader

java.lang.Object

org.jlab.rec.ahdc.Hit.HitReader

public class HitReader
extends Object

Reads raw AHDC hits from the AHDC::adc bank, applies calibration corrections (time offsets, time-over-threshold, ADC gains), filters them against per-wire cuts in data mode, and builds the list of Hit objects used by downstream reconstruction. In simulation mode, the per-wire cuts and data-only ADC/ToT corrections are bypassed, and truth information is additionally read from the MC::True bank into TrueHits.

Constructor Summary

Constructors

Constructor	Description
HitReader(DataEvent event, AlertDCDetector detector, boolean simulation, IndexedTable rawHitCutsTable, IndexedTable timeOffsetsTable, IndexedTable timeToDistanceWireTable, IndexedTable timeOverThresholdTable, IndexedTable adcGainsTable)	Constructs a HitReader and eagerly populates the hit lists from the given event.

Method Summary

Modifier and Type	Method	Description
ArrayList<Hit>	get_AHDCHits()
ArrayList<TrueHit>	get_TrueAHDCHits()
void	set_AHDCHits(ArrayList<Hit> hits)	Replaces the internally stored list of AHDC hits.
void	set_TrueAHDCHits(ArrayList<TrueHit> trueHits)	Replaces the internally stored list of MC-truth hits.

Methods inherited from class Object

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

Constructor Details

HitReader

public HitReader(DataEvent event,
 AlertDCDetector detector,
 boolean simulation,
 IndexedTable rawHitCutsTable,
 IndexedTable timeOffsetsTable,
 IndexedTable timeToDistanceWireTable,
 IndexedTable timeOverThresholdTable,
 IndexedTable adcGainsTable)

Constructs a HitReader and eagerly populates the hit lists from the given event. After construction, retrieve the results via get_AHDCHits() and (in simulation) get_TrueAHDCHits().

Parameters:

event - current event containing the AHDC::adc bank (and MC::True in sim)

detector - AHDC geometry used to resolve wire positions on each hit

simulation - true for Monte Carlo events; disables data-only cuts and corrections

rawHitCutsTable - per-wire acceptance cuts (time, ToT, ADC, pedestal min/max)

timeOffsetsTable - per-wire t0 offsets applied to the leading-edge time

timeToDistanceWireTable - per-wire T2D calibration coefficients used to convert time to DOCA

timeOverThresholdTable - per-wire ToT correction factors (applied in data mode only)

adcGainsTable - per-wire ADC gain corrections (applied in data mode only)

Method Details

get_AHDCHits

public ArrayList<Hit> get_AHDCHits()

Returns:

the calibrated AHDC hits produced from the current event; never null (empty if the AHDC::adc bank is missing)

set_AHDCHits

public void set_AHDCHits(ArrayList<Hit> hits)

Replaces the internally stored list of AHDC hits. Primarily used by fetch_AHDCHits(DataEvent, AlertDCDetector, IndexedTable, IndexedTable, IndexedTable, IndexedTable, IndexedTable).

Parameters:

hits - the list to store

get_TrueAHDCHits

public ArrayList<TrueHit> get_TrueAHDCHits()

Returns:

the MC-truth hits for the current event (populated only in simulation mode; null for data events where fetch_TrueAHDCHits was not called)

set_TrueAHDCHits

public void set_TrueAHDCHits(ArrayList<TrueHit> trueHits)

Replaces the internally stored list of MC-truth hits. Primarily used by fetch_TrueAHDCHits(DataEvent).

Parameters:

trueHits - the list to store