HES HKS meeting

HES HKS meeting22 Nov 2010

T.Gogami

E05-115 experimental setup in JLab Hall C (2009)

Contents

• EDC Residual– Tracking – EHODO

• parameter

EDC residual

• Tracking code– Drift time , distance

• EHODO

Run : 76321 (CH2 target)σ ≈ 250 [μm]

σ ≈ 300 [μm]

EHODO timing

Not so bad

TDC of EHODO2 cannot be seen with current rev.

Need to be checked

xFP vs. Residual

The center doesn’t match !

Pos. at EHODO1

BLUE→Hit only EHODO15

BLUE→Hit EHODO15

These stripe structure caused by multi-hit (between segments)

ちなみに the center doesn’t match.

Mystery 1

Large residual[cm]

[cm

]

Mystery 2[c

m]

HES track chi-square

Large chi-square

Summary and to do• Summary– EDC tracking• Large chi-square• Large residual

– EHODO multi-hit between segments

• to do– POSI– Analysis• Residual of chambers for each arm.• HES tracking

– Strangeness 2010 in KEK• Preparation

END

xpFP vs. residual

xpFP vs. residual

Pos. at EHODO1