roberta sparvoli for the pamela collaboration
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Uuuuuu Uuuu uuuuuuu. Roberta Sparvoli for the PAMELA Collaboration University of Rome Tor Vergata and INFN Roma II, Italy. PAMELA scientific program. - PowerPoint PPT PresentationTRANSCRIPT
Roberta SparvoliRoberta Sparvoli for the PAMELA Collaboration
University of Rome Tor Vergata and INFN Roma II, Italy
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R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 22
PAMELA PAMELA scientific programscientific program
energy range particles/3 years
Antiproton flux 80 MeV - 190 GeV >3 104
Positron flux 50 MeV – 270 GeV >3 105
Electron flux up to 400 GeV 6 106
Proton flux up to 700 GeV 3 108
Electron/positron flux up to 2 TeV
Light Nuclei (up to Z=6) up to 200 GeV/n He/Be/C: 4 107/4/5
AntiNuclei search (sensitivity of 3 10-8 in He/He)
Unprecedented Statistics and new Energy Range in
Cosmic Rays
Actual limits: antip&positrons 40 GeV
PAMELA is a magnetic spectrometer which will fly on a Russian satellite by Fall 2005. Its scientific scope is the measurement of the antiproton and positron spectra up to few hundred GeV, of the proton and electron spectra up to 700 GeV and that of light nuclei.
R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 44
What is PAMELA now?What is PAMELA now?
Flight Model – Munich, Jan 2005
R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 55
Mass&Thermal Model in TsSKB Pressurized Container
Mass & Thermal Model Mass & Thermal Model PAMELA Mass & Thermal Model was assembled in the clean room of Rome Tor Vergata (2001-2002) and then integrated into the Pressurized Container at TsSKB-Progress (Samara/Russia), between March 2002 and April 2003, for all mechanical compatibility tests. It passed thermal and dynamical qualification tests.
Integration in the Container
R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 66
PAMELA Technological Model was assembled and tested (preliminary Acceptance Tests with EGSE: power ON/OFF, telecommands, data transmission through adapter) in the clean room of Rome Tor Vergata in 2003-2004.
Technological Model Technological Model
It was then shipped to Samara inside a special transport container in April 2004. Magnetic compatibility tests and Incoming Tests (stand-alone) already performed. Integration with satellite and transmission to mass memory still in progress (Jan 2005).
R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 77
Flight Model Integration Flight Model Integration The final Flight Model integration is in progress in Rome clean room since almost 12 months. All flight components have been mounted. From 16/02/2005 a Russian delegation is in Rome for official Acceptance tests of PAMELA FM before delivery to Samara.
PAMELA-FM inside Transport Container
Design: > 5000 km flight & 1000 km rail, +40/-50°C outside
R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 88
Beam testsBeam tests
SPS, July 2000
SPS, July 2002
Magnet/Tracker,Calorimeter
SPS, September 2003
From July 2000 until September 2003 PAMELA Flight Model was extensively exposed to beam tests to study physical performance.Detectors operated at CERN PS/SPS test beams as prototypes and in FM configuration. Final test in Sept. 2003.
R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 99
Dynamic testsDynamic tests
Risposta ricerca di risonanza asse Z per accelerometro MP 14 (montante)
PAMELA FM Model passed a cycle of vibration tests at IABG/Munich (January 2005) to verify the final structure. Minimal loads have been imposed to the instrument. 100 channels were mounted.
All resonance searches confirm the integrity of the detector after the test.
R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 1010
Cosmic ray tracks (Dec. 2004)Cosmic ray tracks (Dec. 2004)
Since November 2004 PAMELA is set in cosmic-ray acquisition during night shifts.
R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 1111
First “physics” resultsFirst “physics” results
From the statistics acquired by cosmic-ray acquisitions we are analyzing PAMELA performance and comparing with literature.
R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 R. Sparvoli - INFN-SPAZIO/2 - LNF, 16 Febbraio 2005 1212
ConclusionsConclusions – already done – already done
(0) Detectors and Systems are designed & ready
(1) MASS & THERMAL MODEL done All tests passed space qualification!
(2) TECHNOLOGICAL MODEL ~ done Assembly finished in Rome (~ 1 yr) Integration with satellite in Samara almost complete
(started 05/2004)
(3) FLIGHT MODEL SPS BeamTest of almost complete setup done in Sept. 2003
for final calibration & alignment done Vibration Test (minimal loads) of complete setup for final check of structure – Munich (Jan. 2004) done
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Conclusions – to be doneConclusions – to be done
The PAMELA launch is in Fall 2005
FLIGHT MODEL Acceptance tests to be performed (end by 23 Feb.
2005) Cosmic-ray acquisition (long run) (end by 10 March 2005) Transport to Samara – Russia (March 2005) Full integration of PAMELA, ARINA & EOS into satellite
(April 2005) Tests in Samara – Russia (up to 3 months) All final tests in-situ - Baikonur/Kazahstan (2 – 3 months)