De Angelis, Feb 07 1 Gamma astrophysics in the 50 GeV – 50 TeV domain Great results from Cherenkov telescopes (IACTs): number of VHE sources increased.

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Presentation transcript:

De Angelis, Feb 07 1 Gamma astrophysics in the 50 GeV – 50 TeV domain Great results from Cherenkov telescopes (IACTs): number of VHE sources increased by more than one order of magnitude in 3 years Another factor of 3 expected with MAGIC2, HESS2 –And crucial improvement in resolution Subjects of fundamental physics become accessible, e.g. –Lorentz violation –Dark matter –Transparency of the Universe (related to  M,   ) Another order of magnitude can be gained with CTA –And more: room for new ideas…

De Angelis, Feb 07 2 IACT results: –From 3 VHE gamma sources in 2003, we went to ~40 in 2007 –~100 is expected with MAGIC2, HESS2, synergy with GLAST HESS much more successful on galactic sources, MAGIC a bit more successful in extragalactic

De Angelis, Feb 07 3 Present IACTs: the “Big Four” Roque de los Muchachos, Canary Islands VERITAS (USA,UK1…) 1: Oct ’03 2: m 2 (  4) Montosa Canyon, Arizona Windhoek, Namibia HESS (Germany & France) 2: Sum ’02 4: Early ’ m 2 (  4+1) Woomera, Australia CANGAROO III (Japan & Australia) 2: Dec. ’02, 3: Early ’04 57 m 2 (  4) MAGIC (Germany, Italy & Spain) 1: Autumn ‘ m 2 (  2)

De Angelis, Feb 07 4 HESS2 New 28m telescope pixel camera. Lower energy threshold (30 GeV?) First light in MAGIC2 Improved 17m telescope. Faster FADCs and a high-QE camera. First light in What’s next - 1 VERITAS 4x 12m telescopes at Whipple site end 2007? (now operating at basecamp) MAGIC2 HESS2 VERITAS True photos!

De Angelis, Feb 07 5 What’s next – 2 : the Cherenkov Telescope Array And: Factor 2 better angular resolution (~0.03 deg), Energy resolution ~15%

De Angelis, Feb 07 6 The CTA aims to explore the sky in the 10 GeV to 100 TeV energy range builds on demonstrated technologies (?) combines guaranteed science with significant discovery potential is a cornerstone towards a multi-messenger exploration of the nonthermal universe 2 sites: N ans S hemispheres

De Angelis, Feb 07 7 few 1000 m High-energy section ~0.05% area coverage E th ~ 1-2 TeV 250 m Medium-energy section ~1% area coverage E th ~ GeV 70 m Low-energy section ~10% area coverage E th ~ GeV Array layout: 2-3 Zones FoV increasing to 8-10 degr. in outer sections

De Angelis, Feb 07 8 Not to scale ! Option “off the shelf”: Mix of telescope types Modes of operation Deep wide-band mode: all telescopes track the same source Survey mode: staggered fields of view survey sky Search & monitoring mode: subclusters track different sources Narrow-band mode: halo telescopes accumulate high- energy data, core telescopes hunt pulsars …

De Angelis, Feb 07 9 Proven: H.E.S.S. 12 m dish Proven: MAGIC rapid-slewing 17 m dish (and new MAGIC, started) Construction started: H.E.S.S. II 28 m dish 010 m20 m30 m Dish size Cost / Dish Area Camera cost dominates Dish cost dominates Telescope structure “off the shelf” (but new ideas for large-field welcome)

De Angelis, Feb Strong support from EU: European lead VERITAS MAGIC H.E.S.S. CTA involves scientists from Czech Republic Germany France Italy Ireland UK Poland Spain Switzerland Armenia South Africa Namibia from several communities astronomy & astrophysics particle physics nuclear physics about scientists working currently in the field will be directly involved, user community significantly larger

De Angelis, Feb (Very optimistic) Schedule (to have a superposition w/ GLAST) Site exploration Array design Component prototypes Telescope prototypes Array construction Partial operation Full operation GLAST FP 7 Design Study “Letter of Intent” (100 pages, physics + conceptual design) Technical proposal

De Angelis, Feb Tight deadlines Working groups started meeting in June 06 –Physics: A. De Angelis and L. Drury (convenors), L. Maraschi, A. Treves, M. Persic, G. Lamanna, F. Aharonian, M. Teshima, K. Mannheim, D. Torres, G.F. Bertone, M. Punch, B. Giebels, … –MC: K. Bernloher and E. Carmona (conv.), G. Hermann, G. Lamanna, S. Nolan, C. Bigongiari, A. Moralejo, W. Rhode, … –Photon detector: T. Schweizer and P. Vincent (conv.), P. Goret, M. Punch, M. Teshima, E. Lorenz, N. Turini, INAF Palermo, … –Choice of the site: B.K. and M. Teshima (conv.), G. Vasiliades, J. Cortina, … –Mechanics and mirrors: M. Mariotti and M. Panter (conv.), Brera people, E. Lorenz, A. Biland, P. Chadwick, O. de Jager, … –DAQ and computing: A. Biland and U. Schwanke (conv.), F. Goebel, L. Drury, T. Brez, R. Paoletti, N. Turini, G. Cabras, …

De Angelis, Feb ~3000 sources by GLAST ~1000 sources by CTA Guess confirmed by logN-logS studies

De Angelis, Feb CTA - conclusions A MEUR FP7 project possibly going to be posted in May 2007 –Italy (INFN+INAF) weights ~ 10-15% Mirror technology, advanced electronics, R&D for new telescope design? Science: AGN +… (INAF), astroparticle topics (INFN): Dark Matter, Lorentz Invariance Violation, Cosmological Constants, … Design study: ~5 MEUR now for R&D (big project re-posted in 2010 if it does not go thru?)