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Types of variables

Acd*Count*, Acd*No* Number of hits of a particular type

Acd*ActiveDist3D, Acd*AcdDist "Active Distances", signed measure of track extrapolation to hit Acd dectector element
> 0 means that track extrapolates into hit element, < 0 means that track extrapolates outside hit element.

Acd*ArcLen "Arc Length", distance along track where active distances value is calculated. This is also a signed value,
> 0 means along upward going branch of track, < 0 means along downward going branch of track. (or at least below the
head of the track).

Acd*Err "Error", proejected error on track extrapolation. This variable is not being filled correctly yet.

Acd*_Down: Down going version of variables, calculated for downward branches of tracks.

AcdTkr1*: Variables calculated only for best track
AcdVertex*: Variables calculated for event vertex

Acd*Ribbon*: Variables calculated with respect to ribbons. Most of the variables are with respect to the tiles only.

Acd*Energy*: Energy deposited in a tile or ribbon, expressed in MeV, calculated using MIP equivalent. For tiles we report the greater of the two pmt values. For ribbons we report both values seperately.

Acd*RibbonLen*: Length along ribbon where value is reported. 0 is center of ribbon, > 0 means towards +x or +y side, < 0 means
towards -x or -y side.

Number of hits

AcdRibbonCount
AcdTileCount

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AcdCornerDoca
AcdTkrRibbonDist
AcdTkrHoleDist
AcdTkrRibbonDistRibbonLen Not in merit yet, but requested by A. Moiseev.

// Also, Tkr1 and _Down versions of the same.

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AcdActDistRibbonEnergy_pmtAB Not in merit yet, but requested by A. Moiseev.

Variables that have been removed from Merit

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