The Anticoincidence Shield of the PAMELA Satellite Experimenthot!

The Anticoincidence Shield
of the PAMELA Satellite
Experiment
Silvio Orsi
Royal Institute of Technology,
Stockholm
35th COSPAR Assembly
S. Orsi – Paris, 20 July 2004
Paris, 18-25 July 2004
PAMELA
• Final stage of
integration in Rome
• Earth monitoring
satellite (Resurs DK-1)
• PAMELA hosted in
pressurised container
S. Orsi – Paris, 20 July 2004
The Anticoincidence Shield
1 Top AntiCounter (CAT)
Magnetic
Spectrometer
(tracker)
4 Side AntiCounters
(CAS)
S. Orsi – Paris, 20 July 2004
Height~1.3m
Construction
S. Orsi – Paris, 20 July 2004
The Monitoring System
LED
8 mm
S. Orsi – Paris, 20 July 2004
The AC Detectors
S. Orsi – Paris, 20 July 2004
AC integration on PAMELA
First AC detector in
flight configuration
(summer 2003)
S. Orsi – Paris, 20 July 2004
Trigger Rate
S. Orsi – Paris, 20 July 2004
Backscattering studies
”Good” event
S. Orsi – Paris, 20 July 2004
”Bad” event
Backscattering
event
(figure: simulated events)
Backscattering
S. Orsi – Paris, 20 July 2004
(beam test data – SPS)
Hit multiplicity
S. Orsi – Paris, 20 July 2004
Conclusions
Qualification tests & beam tests
Final integration of AC detectors +
electronics in Rome: finished
Post-integration tests done
2nd level trigger
Looking forward to data
analysis!
S. Orsi – Paris, 20 July 2004
This is the end...
S. Orsi – Paris, 20 July 2004
S1
TRD
S2
Anticoinc.
shields
(CAT/CAS)
Magnetic
Spectrometer
Time of
Flight
System
PSCU
S3
Calorimeter
S4 (bottom scint.)
Height~1.3m
S. Orsi – Paris, 20 July 2004
Neutron
Detector
The Main Trigger
TOP AC (CAT)
SIDE AC (CAS)
BOTTOM
SCINTILLATOR (S4)
NEUTRON DETECTOR
S. Orsi – Paris, 20 July 2004
The Second Level Trigger
S. Orsi – Paris, 20 July 2004
(simulated data)