First underground results with NEWAGE-0.3a direction-sensitive dark matter detector

Understand

A direction-sensitive dark matter search experiment at Kamioka underground laboratory with the NEWAGE-0.3a detector was performed.

• The NEWAGE- 0.3a detector is a gaseous micro-time-projection chamber filled with CF4 gas at 152 Torr.
• The fiducial volume and target mass are 20*25*31 cm3 and 0.0115 kg, respectively.
• With an exposure of 0.524 kgdays, improved spin-dependent weakly interacting massive particle (WIMP)-proton cross section limits by a direction-sensitive method were achieved including a new record of 5400 pb for 150 GeV/c2 WIMPs.