1. 7-Module beam test D. Attié, P. Colas, W. Wang,
M. Dixit, P. Hayman, A. Robichaud,
T. Maerschalk,
J. Timmermans.
I’m here to present a TPC review
LCTPC WP Phone Meeting #158
September 13, 2012

2. LCTPC WP phone meeting #158
Summary of the tests S S P S S PS
September 13, 2012
LCTPC WP phone meeting #158

3. LCTPC WP phone meeting #158
Metallic dust issue
~4 mm
September 13, 2012
LCTPC WP phone meeting #158

4. LCTPC WP phone meeting #158
Endplate gaps
Distance: ~ 3 mm
Detector sides are grounded
Field distorsion !?
3.2 mm
September 13, 2012
LCTPC WP phone meeting #158

5. LCTPC WP phone meeting #158
Nice cosmic events
September 13, 2012
LCTPC WP phone meeting #158

6. LCTPC WP phone meeting #158
Last run: 100 first events
September 13, 2012
LCTPC WP phone meeting #158

7. Data taking program (B=1T)
Commissioning (pedestals, cosmics): 100 kevts
Z scan: 300 kevts
Z = 0 ; 0.5 ; 1 ; 2.5 ; 5 ; 10 ; 15 ; 20 ; 25 ; 30 ; 35 ; 40 ; 45 ; 50 ; 55 ; 57 cm
E = 140 ; 230 V/cm
Gain scan: 100 kevts
V = 330 ; 340 ; 350 ; 360 ; 370 ; 380 ; 390
X and  scans at E=230 V/cm: kevts
X every 2 mm
Z = 5 ; 30 cm
Peaking time scan: 30 kevts
September 13, 2012
LCTPC WP phone meeting #158

8. LCTPC WP phone meeting #158
Next steps
After installation, everything worked fine (106 events taken) smoothly
Connections between FECs and detector PCB need to be improved
Other minor improvements have to be done
4 more detectors have been produced by Cern and have to be tested, the last one will be produced during the next weeks
Data analysis is in progress within MarlinTPC framework
September 13, 2012
LCTPC WP phone meeting #158