TRIUMF Talks

Slow neutrons and their role to test gravity

Speaker: 
Gunther Cronenburg (TU Wien)
Event Date and Time: 
Mon, 2015-01-19 14:00 - 15:00
Location: 
TRIUMF Auditorium

Experiments in the research field of gravitation have experienced a renaissance. Modern astronomical observations clearly point to the existence of dark energy and dark matter – although their true nature and content remain a mystery. In addition, string theories provide a motivation to search for deviations from Newton’s Inverse Square Law. The compatibility of General Relativity and quantum field theories is not established. In various experiments, slow neutrons contribute to these questions.

Structure Models for Nuclear Masses and Neutrinoless Double-Beta Decay

Speaker: 
Alex Brown (Michigan State)
Event Date and Time: 
Thu, 2015-01-29 14:00 - 15:00
Location: 
TRIUMF Auditorium

The pairing contribution to the odd-even oscillations in the nuclear binding energies is considered in the framework on the nuclear shell model. Schematic and realistic Hamiltonians are used to understand the trends related to pairing and shell gaps. Detailed results are shown for the neutron-rich calcium isotopes. Observation of neutrinoless double-beta decay will show that the neutrinos are Majorana type fermions and determine their absolute mass scale.

Fundamental Physics Beyond Colliding Particles

Speaker: 
Asimina Arvanitaki (Perimeter Institute)
Event Date and Time: 
Thu, 2015-01-15 14:00 - 15:00
Location: 
TRIUMF Auditorium

When we think about Particle physics the first thing that comes to mind is colliders and high energies. In this talk, I will describe how low energy experiments can probe new phenomena, new particles and new forces of nature. I will focus on two new experiments: the gravitational wave detector of advanced LIGO and Nuclear Magnetic Resonance (NMR) techniques. These two very different experiments can be used to detect the same particle, the QCD axion.

Forty Years of Beams at TRIUMF

Speaker: 
Jonathan Bagger, Michael Craddock, Ewart Blackmore, Lia Merminga
Event Date and Time: 
Fri, 2014-12-12 13:30 - 15:00
Location: 
TRIUMF Auditorium
13:30 Forty Years of Beams at TRIUMF, Jonathan Bagger , TRIUMF director

13:45 The First Beam: 10 Years in the Making, Michael Craddock

14:15 Challenges in Building TRIUMF 1968-1975 , Ewart Blackmore

14:45 TRIUMF 500 MeV Cyclotron: The next 40 years, Lia Merminga

Nuclear astrophysics and fundamental symmetries via beta decay at NSCL

Speaker: 
Chris Wrede (Michigan State/NSCL)
Event Date and Time: 
Fri, 2014-12-12 11:00 - 12:00
Location: 
TRIUMF Conference Room
Local Contact: 
Iris Dillman

An experimental program to measure the beta-delayed radiations of proton-rich nuclides is in progress at the National Superconducting Cyclotron Laboratory on the campus of Michigan State University (MSU). Arrays of germanium detectors are used to measure beta-delayed gamma rays and a micro pattern gas amplifier detector is being developed to measure low energy beta-delayed protons. These measurements provide experimental data that is needed to model energy generation, explosive nucleosynthesis, and their associated observables in classical novae and type I x-ray bursts.

How Nuclear Physics Can Diagnose and Treat Cancer

Speaker: 
Cornelia Hoehr (TRIUMF)
Event Date and Time: 
Thu, 2014-11-20 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Undergraduate

Cancer affects about 50% of people in western countries and is the cause of death for 25% of the population. The three approaches of treating cancer are surgical removal, chemotherapy or radiotherapy. Physics and especially nuclear physics has always played a direct and indirect role in medicine as very early on scientists realized the potential of radiation treatment in medicine. TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, provides tools for cancer diagnostics in the form of radioactive isotopes used in Positron Emission Tomography (PET).

Searching for dark matter with bubble chambers

Speaker: 
Hugh Lippincott (Fermilab)
Event Date and Time: 
Thu, 2014-11-13 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Undergraduate

The PICO Collaboration (formed from the recent merger of the Chicago-based COUPP and the Canadian-based PICASSO experiments) uses bubble chambers to search for dark matter particles. Unlike the bubble chambers of the 1960s and 1970s, PICO chambers are operated in only mildly superheated conditions, rendering them insensitive to the minimum ionizing particles that typically constitute the largest background in dark matter searches.

Ultra high energy cosmic rays: recent results from the Pierre Auger Observatory

Speaker: 
Fred Sarazin (Colorado School of Mines)
Event Date and Time: 
Thu, 2014-12-04 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Undergraduate

The cosmic-ray spectrum spans many orders of magnitude in energy. At the very end of the spectrum (E> 1e18 eV) lie the Ultra High Energy Cosmic Rays (UHECRs). Their origin remains largely unknown and their study is made difficult in part by the very low flux impinging on Earth's atmosphere. The Pierre Auger Observatory, located in the Mendoza province of Argentina, is an array of detectors spread over 3000 km^2 specifically designed to study the properties of the extensive air showers induced by the UHECRs in the atmosphere.

Muonic atoms and proton radius puzzle

Speaker: 
Chen Ji (TRIUMF)
Event Date and Time: 
Thu, 2014-10-30 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Undergraduate

Muonic atoms and proton radius puzzle

Exploring isospin asymmetry and independence along the N=Z line

Speaker: 
Silvia Lenzi (INFN and U Padova)
Event Date and Time: 
Thu, 2014-10-23 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Graduate

Exploring isospin asymmetry and independence along the N=Z line

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