Speaker
Description
The Indian Dark matter search Experiment (InDEx) has been initiated at Jaduguda Underground Science Laboratory (JUSL) at UCIL, Jaduguda mine, Jharkhand. InDEx uses Superheated Liquid Detector (SLD) in the form of droplets in a gel matrix. The signal read out is through the acoustic sensors coupled to the detector gel matrix and stored in FPGA and LabView based DAQ system. Few runs have been completed by InDEx and the first result for a 7.2kg-days of exposure has been released at 1.92 keV threshold [PRD 112, 042003 (2025)]. The sensitivity of InDEx is of the order of 10^(-40) cm^2 for SI interaction at a WIMP mass of 20.4 GeV. The SLD detector and related instrumentation all are fabricated at the surface laboratory and calibrated with standard radiation sources as well as in cyclotron facility. Presently R & D is going on to lower the detector threshold and to increase the mass of the active liquid. The challenges lies in the fabrication of larger mass detector with reduced intrinsic backgrounds and several measurements as well as simulations are in progress to address these issues.
| Position | Professor - G |
|---|---|
| Affiliation | Saha Institute of Nuclear Physics |
| Country | India |