1. RIKEN software meeting
Software Update
Takashi HACHIYA
RIKEN
2011/12/9
RIKEN software meeting

2. RIKEN software meeting
TaskList
Items
issues
Day
spent
status
CNT+Cluster
define output & its coding
2 days
3 d
Done
Debugging
1w(+2w)
Modified
Parameter tuning 1s
N/A
Refitting for mom. 2w
Move to Matt
svxDetectorGeo
Adding offset for coor. 3d
Not yet
PriVerSeed
Resolution is too small. 0d
Not Yet
PrimVtx
Modify prim vtx output 2d 1d
Keep unchanged
Management issue
Update tasklist in WIKI
Maintain Task list
AnalysisMeeting
Helping
1d/w
Hot&Dead in sim.
Apply hot&dead
ReactionPlane
Discuss the class structure
Coding the storage object
Dicussion w/ colorado
done
2011/12/9
RIKEN software meeting

3. RIKEN software meeting
CentralTrack
1st Version is committed into the CVS
Modifying :
Loop over the all cluster candidate.
dphi angle for catching the fast cluster lists
Different problem with SATracking
Mike made the evaluation code
Modify the SvxEvaluator
About to start the efficiency study.
To do list
Add the code to encode/decode the SvxCentralTrack into ValArray type object.
Modify the link routine to get some missed links.
One is bug, and other is similar with SATrack
No Nhit cuts is applied. (should be more than 2~3 hits)
width of Residual distribution for better chi2 calculation
2011/12/9
RIKEN software meeting

4. dphi problem in CentralTrack and SATrack
In SATrack, since the cluster search range is iteratively determined (changed), some clusters are accidentally mis-found.
Yellow clusters are missed.
In CentralTrack, since same dphi w.r.t DCTrack is always applied , this problem does not happen. But same dphi limits the acceptance with the momentum. I will tilt the dphi cut w.r.t. its momentum
dphi=0.2 is used. This might be too wide. I will change this to smaller value if the reconstruction time is concerned.
2011/12/9
RIKEN software meeting

5. RIKEN software meeting
Debug & test
Debug & test is proceeding using single particle simulation.
but …
2011/12/9
RIKEN software meeting

6. Code Modification for Offset
クラスタの位置をずらす
DSTに残すClusterの位置情報は、PHENIX座標系での位置とする。
Local→Global変換を行う。　このときのOffsetは：
　　　　　　　x’ = x + dCNT_VTX + dEW
dCNT_VTX : CentArmとVTXとの座標元点のズレ
dEW : VTXのWest/Eastオフセット。
これらにより全クラスタ点をCentArm座標の点に変換する。
VTXSoftミーティングで指摘された点
Clusterの位置だけでなく、検出器のGeometryもずらす必要がある。
検出器上のProjection位置を計算するため(Kalman Filter等)に、正確な検出器位置が必要。
このオフセットを検出器位置にも加えることで、クラスタ位置、検出器の両方をコンシステントに扱える。
Prdf
Reconstruction
Clustering
Tracking
Recalibrator
Refitting
2011/12/9
RIKEN software meeting

7. Code Modification for Offset2
When initializing SvxSensor,
dCNT_VTX is set for west as offset,
dCNT_VTX + dEW is set for east
svxDetectorGeo
SvxSensor** barSensor
Float dVTX_CNT[3];
Float dEW[3];
Initialized in
CreatePanel() : no one is called
Initialized in
Read_svxPISApar() : file I/F
Fetch_svxPISApar(): DB I/F 1
Nsensors
Nsensors
SvxSensor
float transVector[3];
Float rotMatrix[3] [3];
Float offset[3];
Void position_local2global()
{use getVTcorr, instead of getVT()}
Void getTV(); …
void getTVcorr(int i)
{transVector[i]+offset[i]}
PHPanel (maybe for CGL)
PHPoint p1.. p4
PHPoint center
Not update.
If someone call after Read…/Fetch…,
Offset is automatically taken into account.
SvxKalman only use SvxSensor, not PHPanel
2011/12/9
RIKEN software meeting