Dwaipayan Ray Email & Phone Number

The search for neutrinoless double-beta decay (0νββ) offers a way to probe for new physics including explanation of the observed matter-dominated Universe. While the upcoming nEXO experiment will search for 0νββ decay in 136Xe with sensitivities to a level of 10^19 times the age of the Universe, new avenues are being investigated as future upgrades to nEXO. We are developing one such approach focusing on extraction and identification of the ββ-decay daughter Ba ion, also known as Ba-tagging, which will suppress all non-ββ background.I am leading efforts to commission an experimental apparatus to develop an accelerator-driven ion source for radioactive ion implantation in liquid xenon, extraction and subsequent identification using gamma-spectroscopy.

Vancouver, British Columbia, Canada

Vancouver, British Columbia, Canada

I am working on commissioning an experimental apparatus to develop an accelerator-driven ion source for radioactive ion implantation in liquid xenon, extraction and subsequent identification using gamma-spectroscopy, as part of a trans-Canadian Ba-tagging effort for nEXO upgrade, in pursuit of neutrinoless double beta decay.

Vancouver, British Columbia, Canada

Lemont, Illinois, United States

I was in charge of the mass measurement program with the Canadian Penning trap mass spectrometer using the Phase-Imaging Ion-Cyclotron-Resonance (PI-ICR) technique. The goal was to elucidate the astrophysical rapid neutron capture (r) process. I have taken point in more than 10 measurement campaigns leading to multiple coauthored publications in peer-reviewed journals. Additionally, I gained extensive hands-on experience working with gas catchers, isobar separator, radio-frequency quadrupole (RFQ) cooler-bunchers, and multi-reflection time-of-flight (MR-TOF) mass spectrometers. On the computer programming side of things, I used C++ and Python to operate and troubleshoot different devices in our apparatus and for data analysis. This included optimizing an ML clustering algorithm using a set of Gaussian Mixture Models which would automatically identify ion clusters as spots, which resulted in a publication.

Winnipeg, Manitoba, Canada

Conducted tutorials and laboratory classes for around 25 B.Sc. students in introductory physicscourses namely General Physics 1 and 2. Graded tutorial tests and lab. reports

Kolkata, West Bengal, India

Taught physics, chemistry and biology to students of Classes VI – X, about 40 students per classSet question papers for examinations and graded answer scripts of the same subjects

Brighton And Hove, England, United Kingdom

Tutored courses Foundations of Modern Physics and Physics in Practice to 15-20 First Year B.Sc. StudentsConducted labs of the course Physics in PracticeGraded answer scripts of assignments of both the above courses

Doctor Of Philosophy - Phd, Physics

Masters, Physics

Bachelors, Physics