From Carlos's summary Session I. Tuesday 20, 11:00-12:30 , room: Sal - - PowerPoint PPT Presentation

WIMP sessions Uppsala meeting October 2011

Session I. Tuesday 20, 11:00-12:30 , room: Sal XI

• Welcome and introduction (C. de los Heros, Uppsala)
• MSSM-7 scans (K. Wiebe, Mainz)
• Galactic Center analysis update plus Aachen activities (M. Bissok, Aachen)
• IC79 Galactic Halo analysis (T. Woods, Alberta)
• Dwarf spheroids analysis update (J. Lüneman, Mainz)

Session II. Tuesday 20, 14:15-16:00 , room: Sal XI

• Secluded dark matter search with IceCube (J. Miller, Uppsala)
• Solar WIMP searches with cascades (C. Rott, Ohio)
• Status of IC59 solar WIMPs (J. Kunnen, Brussles)
• Status of IC79 austral summer solar WIMPs (E. Strahler, Brussels)
• Status of IC79 austral winter solar WIMPs (M. Danninger, Stockholm)
• Global SUSY fits with IceCube data (M. Danninger, Stockholm)

From Carlos's summary

Latest results from the WIMP group

Olle's IC40 Solar analysis (thesis in writing) Combined with Alfio's AMANDA-II and Gustav's IC22 analyses Total livetime of 1065 d. New PRELIMINARY plots to be used in conferences (to appear on the WIMP wiki soon)

the Sun: more exotic stuff

• Secluded dark matter searches (Jonathan Miller, Uppsala)

n

2004: Project start 2010/2011: 7 Strings installed, Project completed with 86 strings

50m 1450m 2450m 2820m

bedrock

IceCube lab

IceCube In-Ice array

80 strings each with 60 DOMs

AMANDA-II array

(IceCube pre-cursor)

DeepCore

6 strings each with 60 high quantum efficiency DOMs; optimized for low energies

Goals:

• Assess the feasibility of

deploying NaI(Tl) crystals in the Antarctic Ice for a dark matter detector

• Establish the radiopurity of

the antarctic ice / hole ice

• Explore the capability of

IceCube to veto muons

DM-Ice-17

Detectors:

• Two 8.5 kg NaI detectors

from NAIAD (17 kg total)

Successfully deployed

• n Dec. 2010!

Currently taking data continuously since Jan. 2011

Monday, October 3, 2011

From Seon-Hee

DM-Ice-17 Construction & Deployment

2

Flying to Antarctica DM-Ice and IceCube DOMs awaiting installation Detector in the hole Deployment Team Transport across the Ice Detector assembly

Monday, October 3, 2011

DM-Ice Sensitivity

• J. Cherwinka et al.,

arXiv:1106.1156

Sensitivity (90% CL) with null hypothesis: 250-kg / 2-year running time

• Lower the Ethreshold the better the sensitivity.
• Higher the Ethreshold, more BG control is needed.

Monday, October 3, 2011

DM-Ice Full Detector Concept

• Segmented 20” diameter x 10” long

NaI detector (~200 kg)

• Stainless steel pressure vessel
• Copper shielding if needed
• Electronics & pulse digitization in the

vessel

• location:
• ~ 2500 m deep in the ice,
• near the center of IceCube for

additional veto

• Local muon veto

~150 cm ~65 cm

Final design might change.

We might need total 2 -3 modules like this.

Monday, October 3, 2011