4/21/2011Katsushi Arisaka, UCLA 1 University of California, Los Angeles Department of Physics and Astronomy Katsushi Arisaka

UCLA Dark Matter Programs  Direct Search  David Cline, Katsushi Arisaka, Hanguo Wang Xe : ZEPLIN-II  XENON100  XENON 1Ton Ar : DarkSide50  DarkSide 5Ton G3 : MAX, XAX  Indirect Search  Rene Ong VERITAS  GAPS  Vladimir Vassiliev VERITAS  CTA  David Saltzberg ANITA  Theory  Graciela Gelmi niDAMA/CoGeNT  Alex Kusenko Sterile Neutrino 4/21/2011Katsushi Arisaka, UCLA 2

XENON100 Detector 4/21/2011 Katsushi Arisaka, UCLA kg (48 kg)

90% CL Limits of SI Cross Section 4/21/2011Katsushi Arisaka, UCLA days, 48 kg, 3 events

Photo Cathode (-6 kV) APD (0 V) Quartz Al coating APD (0 V) Photo Cathode (-6 kV) QUPID (QUartz Photon Intensifying Detector) 4/21/ Katsushi Arisaka, UCLA Katsushi Arisaka, Hanguo Wang

XENON1T 4/21/2011Katsushi Arisaka, UCLA 6 Katsushi Arisaka, Hanguo Wang

DarkSide 50 kg  5 Ton 4/21/2011Katsushi Arisaka, UCLA 7 CTF Water Tank Liquid Scintillator 3” QUPID (19 top + 19 bottom) Depleted Ar (50 kg) Hanguo Wang

90% CL Limits of SI Cross Section 4/21/2011Katsushi Arisaka, UCLA 8 G2 G3 G1

Indirect WIMP Detection   ? W + /Z/H/q W - /Z/h/q WIMP Annihilation (e.g. GC)  VERITAS, HESS, Fermi … IceCube Telescopes e-e- ATIC, Fermi … Cosmic Ray Expts p e+e+ HEAT, Pamela, AMS d GAPS Pamela, AMS decreasing background Rene Ong, Vladimir Vassiliev 4/21/2011Katsushi Arisaka, UCLA 9

VERITAS 12m reflector, f1.0 optics 350 Mirror Facets 500 pixel Camera Rene Ong, Vladimir Vassiliev 4/21/2011

Cherenkov Telescope Array Vladimir Vassiliev 4/21/2011Katsushi Arisaka, UCLA 11

GAPS Concept GAPS consists of two detectors (acceptance ~2.7 m 2 sr): Si(Li) Detector (target and tracker): Si(Li) tracker:13 layers of Si(Li) wafers relatively low Z material good X-ray resolution circular modules segmented into 8 strips  3D particle tracking 270 per layer (total: ~3500) timing: ~50 ns dual channel electronics keV: X-rays (resolution:~2 keV) MeV: charged particle Time of flight and anticoincidence shield: plastic scintillator with PMTs surrounds tracker track charged particles, dE/dX velocity measurement anticoincidence for charged particles TOF tracker ~3m ~4m LD Balloon flight in 2015 ? Rene Ong 4/21/2011

Sterile Neutrinos 4/21/2011Katsushi Arisaka, UCLA 13 Alex Kusenko

DAMA/LIBRA vs. XENON100 4/21/2011Katsushi Arisaka, UCLA 14 Graciela Gelmini

UCLA Dark Matter Programs  Direct Search  David Cline, Katsushi Arisaka, Hanguo Wang Xe : ZEPLIN-II  XENON100  XENON 1Ton Ar : DarkSide50  DarkSide 5Ton G3 : MAX, XAX  Indirect Search  Rene Ong VERITAS  GAPS  Vladimir Vassiliev VERITAS  CTA  David Saltzberg ANITA  Theory  Graciela Gelmi niDAMA/CoGeNT  Alex Kusenko Sterile Neutrino 4/21/2011Katsushi Arisaka, UCLA 15