Astroparticle Physics at DESY

• IceCube

• CTA

• Recommendations

IceCube optical• Construction finished in December 2010

86 strings deployed (2005 to 2010) inauguration April 28th, 2011

• Excellent performance:

very low failure rate of OMs

98% up-time

• During installation time:

accumulated exposure ~ 2 cubic kilometer year

IceCube – further installations

• Continuation of R&D efforts still possible

• In ice radio antenna stations for ARA GZK neutrinos

• NaJ-detector in ice evaluation for direct dark matter search

• acoustic components acoustic ice properties

CTA• Germany has a leading role in CTA

• DESY is a strong partner in CTA and gives important support to German CTA groups; DESY has high visibility in CTA

• DESY contribution:mid size telescope design and prototypearray operation centreelectronicsanalysis and computing

• Pre-prototype has been set-up• Prototype expected until end 2011

general• Application for a „Helmholtz Alliance on Astroparticle Physics“

proposal submitted December 2010evaluation in April 2011 was positivehas to be approved be the Helmholtz Senat

• Berlin-Brandenburg-Cluster is etablished (Universität Potsdam, Humboldt-Universität Berlin, DESY-Zeuthen) Markus Ackermann + 1 Postdocs + 1 Doktorand

Recommendations• DESY should take a leading role in the coming Helmholtz Alliance • IceCube:

DESY should extensively take part in the physics harvest

• CTADESY should keep its strong hardware involvement

DESY should strengthen its simulation and physics involvement