4/21/2011 Katsushi Arisaka, UCLA 1
University of California, Los Angeles
Department of Physics and Astronomy
Dark Matter Programsat UCLA
Katsushi Arisaka
UCLA Dark Matter Programs Direct Search
David Cline, Katsushi Arisaka, Hanguo WangXe : ZEPLIN-II XENON100 XENON 1TonAr : DarkSide50 DarkSide 5TonG3 : MAX, XAX
Indirect Search Rene Ong VERITAS GAPS Vladimir Vassiliev VERITAS CTA David Saltzberg ANITA
Theory Graciela Gelmini DAMA/CoGeNT Alex Kusenko Sterile Neutrino
4/21/2011 Katsushi Arisaka, UCLA 2
XENON100 Detector
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162 kg(48 kg)
4
90% CL Limits of SI Cross Section
4/21/2011 Katsushi Arisaka, UCLA
100 days, 48 kg, 3 events
Photo Cathode(-6 kV)
APD (0 V)
Quartz
Quartz
Al coating
APD (0 V)
Photo Cathode(-6 kV)
QUPID (QUartz Photon Intensifying Detector)
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Katsushi Arisaka, Hanguo Wang
6
XENON1T
4/21/2011 Katsushi Arisaka, UCLA
Katsushi Arisaka, Hanguo Wang
7
DarkSide 50 kg 5 Ton
4/21/2011 Katsushi Arisaka, UCLA
CTF Water Tank
LiquidScintillator
3” QUPID(19 top + 19 bottom)
Depleted Ar(50 kg)
Hanguo Wang
8
90% CL Limits of SI Cross Section
4/21/2011 Katsushi Arisaka, UCLA
G2
G3
G1
9
Indirect WIMP Detection
c
c
?
W+/Z/H/q
W-/Z/h/q
WIMP Annihilation
(e.g. GC)
g VERITAS, HESS, Fermi …
n IceCube
Telescopes
e- ATIC, Fermi …
Cosmic Ray Expts
p
e+
HEAT, Pamela,AMS
d GAPS
Pamela, AMS
decreasingbackground
Rene Ong, Vladimir Vassiliev
4/21/2011 Katsushi Arisaka, UCLA
VERITAS
12m reflector, f1.0 optics
350 Mirror Facets
500 pixel Camera
Rene Ong, Vladimir Vassiliev
4/21/2011
11
Cherenkov Telescope Array Vladimir Vassiliev
4/21/2011 Katsushi Arisaka, UCLA
GAPS ConceptGAPS consists of two detectors (acceptance ~2.7 m2sr):
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
5-200 keV: X-rays (resolution:~2 keV)0.1-200 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~4m
LD Balloon flight in 2015 ?
Rene Ong
4/21/2011
13
Sterile Neutrinos
4/21/2011 Katsushi Arisaka, UCLA
Alex Kusenko
14
DAMA/LIBRA vs. XENON100
4/21/2011 Katsushi Arisaka, UCLA
Graciela Gelmini
UCLA Dark Matter Programs Direct Search
David Cline, Katsushi Arisaka, Hanguo WangXe : ZEPLIN-II XENON100 XENON 1TonAr : DarkSide50 DarkSide 5TonG3 : MAX, XAX
Indirect Search Rene Ong VERITAS GAPS Vladimir Vassiliev VERITAS CTA David Saltzberg ANITA
Theory Graciela Gelmini DAMA/CoGeNT Alex Kusenko Sterile Neutrino
4/21/2011 Katsushi Arisaka, UCLA 15