Dr
Geoffrey Fathom Grinyer
(University of Regina)
15/02/2018, 19:15
The Active Target and Time Projection Chamber (ACTAR TPC) is an ambitious European project whose goal is to design and construct a high-luminosity gas-filled detector to study reactions and decays of rare isotopes. The core detection system consists of a micro-pattern gaseous detector coupled to a highly pixelated pad plane with a pitch of only 2x2 mm2. Both the channel density (25...
Mr
Edward Thoeng
(TRIUMF)
15/02/2018, 19:45
CW high-power LINACs require SRF cavities operating at the frontier of high accelerating gradient and low RF power dissipation, i.e. high quality factor (Q0). This requirement poses a challenge for standard surface treatment recipes of SRF cavities and new treatments including doping and layered structures are being developed and proposed. Understanding the fundamental mechanisms behind the...
Mr
Benjamin Tam
(Queen's University)
15/02/2018, 20:00
The SNO+ experiment is a versatile multipurpose neutrino detector situated at SNOLAB. Though concentrated on the search for neutrinoless double beta decay in $^{130}$Te, SNO+ is also capable of a vast array of physics goals including the observation of geoneutrinos, reactor antineutrinos, supernova neutrinos, and other exotic physics such as axion-like particles and invisible nucleon decay....
Mr
Yan Liu
(Queen's University)
15/02/2018, 20:15
SNO+ is a kilo-tonne scale liquid scintillator experiment in search for neutrinoless double beta decay. SNO+ reuses the old SNO detector, which is currently filled with water. Physics topics including nucleon decay and antineutrino detection are explored during this water phase. In this talk I will discuss the importance of AmBe source calibration on both physics topics along with an overview...
Mr
Richard Germond
(Queens University)
15/02/2018, 20:45
Many astronomical and cosmological observations have led to the conclusion that approximately 85% of the mass content of the universe is composed of non-baryonic dark matter that interacts weakly with ordinary matter. The Super Cryogenic Dark Matter Search (SuperCDMS) experiment operates cryogenic semiconductor detectors to observe rare signals produced by dark matter particles colliding in...
Mr
Alexandre Laurier
(Carleton University)
15/02/2018, 21:15
The ATLAS experiment is being improved in order to benefit from the increased performance provided by the next phase of CERN’s large hadron collider upgrade plan. The Small Wheel will be replaced by the New Small Wheel, constructed from Micromega detectors and Small-strip Thin Gap Chambers (sTGC). The current state of the sTGC simulation software responsible for replicating hardware response...
Mr
Alessandro Ambler
(McGill)
15/02/2018, 21:30
Multiple analog and digital signal processing techniques are simulated to optimize the energy reconstruction performance of the upgraded readout electronics of the liquid argon hadronic endcap calorimeter in the ATLAS detector. The ATLAS detector is designed to record proton-proton collisions at the Large Hadron Collider (LHC). The detector will be upgraded in 2024-25 alongside the LHC's...
Mr
Konstantin Lehmann
(Simon Fraser Universtiy)
15/02/2018, 21:45
Recording proton-proton collisions at the LHC requires cutting-edge detectors, custom- made for high energy physics applications. A new Inner Tracker (ITk) will be built for the ATLAS experiment to be able to resolve approximately 200 proton collisions simultaneously during the high-luminosity LHC phase. In order to minimize dead detector area, individual sensors need to be placed as close as...
Dr
James Smallcombe
(TRIUMF)
16/02/2018, 09:00
Internal conversion electron (ICE) spectroscopy is a key tool of nuclear structure research, particularly for the study of elusive electric monopole (E0) transitions. Such spectroscopy is less common than gamma-ray spectroscopy due to the technical challenges involved, however it provides crucial insight few other techniques can.
The nuclear spectroscopy group at TRIUMF has two powerful...
Badamsambuu Jigmeddorj
(University of Guelph)
16/02/2018, 09:30
The evolution of the simple collective signature, the excited first $2^+$ state energy,
is extraordinarily smooth for the nuclei in the Z$>$50, N$<$82 region, which is expected
to be an ideal region to test collectivity. The study of $^{122}$Xe is a part of a systematic
examination of the development of collectivity in the Xe isotopes which are located in the region.
Detailed...
Dr
Farnaz Ghazi Moradi
(University of Guelph)
16/02/2018, 09:45
The low-spin excited states in the non-yrast bands of Xe nuclei in A=120-130 mass zone exhibit excitations built on both rotational and vibrational degrees of freedom.The precise branching ratio measurements of the often weak transitions that connect these low-lying collective states and the determination of their $B(E2)$ values play an important role in characterization of the excited states...
Beau Greaves
(University of Guelph)
16/02/2018, 10:00
In this contribution, we present a preliminary look into a recent neutron transfer experiment done at TRIUMF in July 2017 studying the 22Ne nucleus. 22Ne plays an important role in the nucleosynthesis in asymptotic giant branch stars, with its synthesis competing with the production of 19F through the so called ‘poisoning reaction’, and the following transfer into 25Mg acting as one of the...
Prof.
Viktor Zacek
(University of Montreal)
16/02/2018, 10:15
Nuclear transitions provide a means to probe light, weakly-coupled new physics and portals into the dark sector. Particularly promising are those transitions that can be accessed through excited nuclear states that are resonantly produced, providing a high-statistics laboratory to search for MeV-scale new physics. In this talk we will review the so-called 8Be - anomaly, which is a 6.8 σ...
Mr
Yukiya Saito
(The University of British Columbia / TRIUMF)
16/02/2018, 10:45
Nuclei around doubly magic $^{132}$Sn are of particular interest in terms of nuclear structure as well as nuclear astrophysics. The properties of these nuclei provide important input parameters for the astrophysical $r$-process (rapid neutron-capture process) since they play a role as waiting-point nuclei and their shell structure and half-lives affect the shape of the second $r$-abundance...
Nikita Bernier
(TRIUMF/UBC)
16/02/2018, 11:00
The neutron-rich Cadmium isotopes around the well-known magic numbers at $Z=50$ and $N=82$ are prime candidates to study the evolving shell structure observed in exotic nuclei. Additionally, the extra binding energy observed around the nearby doubly-magic $^{132}$Sn has direct correlations in astrophysical models, leading to the second r-process abundance peak at $A\approx130$ and the...
Moushumi Das
(TUCAN collaboration)
16/02/2018, 11:15
A non-zero neutron electric dipole moment (nEDM) would indicate time reversal and consequently charge-parity violation (T and CP). Many experiments are currently being conducted or planned to measure the nEDM. At present the experimental upper bound on the nEDM is $3.0 × 10^{−26}$ e-cm. Our collaboration is developing an experiment at TRIUMF to improve the sensitivity to the nEDM by over one...
Mr
Shomi Ahmed
(U of Manitoba/ U of Winnipeg - for the TUCAN Collaboration)
16/02/2018, 11:30
The existence of a non-zero neutron electric dipole moment (nEDM) would violate parity and time-reversal symmetry. Extensions to the Standard Model predict the nEDM to be $10^{-26}$ - $10^{-28}$ e-cm. The current best upper limit set by Sussex/RAL/ILL nEDM experiment is $3.0 \times 10^{-26}$ e-cm. The nEDM experiment at TRIUMF is aiming at the $10^{-27}$ e-cm sensitivity level. We are...
Prof.
Marie-Cécile Piro
(University of Alberta)
16/02/2018, 19:00
Understanding the nature of Dark Matter is the Holy Grail for many physicists. While the answer to this fundamental question still eludes the scientific community, it could well result in unique proof of physics beyond the Standard Model. Direct detection searches are currently the most powerful way to solve this long lasting mystery.
Over the last decade, dark matter detection techniques...
Mr
Daniel Durnford
(Queen's University)
16/02/2018, 19:30
The NEWS-G direct dark matter search experiment employs spherical proportional counters (SPCs) with light noble gases as target media to search for low-mass WIMPs. We report on the results of a 42 kg.day physics run with a 60 cm diameter SPC and a neon target, operated at the Laboratoire Souterrain de Modane. World leading constraints on the spin-independent WIMP-nucleon scattering cross...
Ms
Danika MacDonell
(University of British Columbia)
16/02/2018, 19:45
Observational evidence indicates that $\sim$85% of all mass in the universe takes the form of non-baryonic dark matter.
The Super Cryogenic Dark Matter Search (SuperCDMS) is a direct-detection dark matter experiment that searches primarily for a plausible dark matter candidate known as the weakly-interacting massive particle (WIMP). The experiment looks for an excess of nuclear recoil events...
Mr
Andrew Erlandson
(Carleton University)
16/02/2018, 20:00
DEAP-3600 is a single-phase liquid argon (LAr) dark matter detector located $\sim$2 km ($\sim$6000 mwe) underground at SNOLAB near Sudbury, Ontario. Recently, DEAP-3600 published results on 4.44 live-days of data in which a leading limit on the spin-independent interaction cross section for 100 GeV/c Weakly Interacting Massive Particles (WIMPs) on $^{40}$Ar was found. In order to achieve...
Mr
Arthur Plante
(Université de Montréal)
16/02/2018, 20:15
Dark matter direct detection experiments have been traditionally reporting their results in terms of limits on the spin-independent and spin-dependent cross sections. However, these two types of interactions are only a subset of possible interactions between WIMPs and nucleons. The full set of couplings can be derived in the effective field theory (EFT) framework. In this approach “new"...
Mr
Frédéric Tardif
(University of Montreal)
16/02/2018, 20:45
Search for direct detection of dark matter has become more and more precise, and it is essential to understand perfectly how our detectors behave when interacting with ordinary matter, in order to potentially see interactions with dark matter. In the case of the PICO experiment, the behaviour of the superheated fluids used as active mass in the detectors is a key component of the...
Clarke Hardy
(Queen's University)
16/02/2018, 21:00
PICO is an ongoing experiment at SNOLAB, the underground laboratory at Vale’s Creighton mine near Sudbury, Ontario. The purpose of PICO is to detect dark matter in the form of Weakly Interacting Massive Particles using superheated C3F8 in which bubbles form when sufficient energy is added in the form of a nuclear recoil. The active fluid is contained in a quartz jar within a larger pressure...
Mr
Mathieu Laurin
(Université de Montréal)
16/02/2018, 21:15
The PICO collaboration is one of the leaders in the field of dark matter searches. As of today, it has built several bubble chambers of increasing active mass and sensitivity, with PICO-60 being the largest of the series to date, containing 40 L of superheated C$_3$F$_8$. Despite the great success of PICO-60, some important design changes are needed in order to realize the next generation...
Ms
Gevy Cao
(Queen's University)
16/02/2018, 21:30
PICO is a dark matter experiment using superheated liquid to detect particle interactions. PICO-40L is a detector with a novel design of a Right-Side-Up chamber, placed inside a large pressure vessel, immersed in a water tank. Radioactive source calibrations are essential to identify background events. In the presentation, I will show the results from detector simulations for PICO-40L...
Dr
Tamara Vazquez Schroeder
(McGill University)
17/02/2018, 09:00
This talk presents selected aspects of recent physics results from the ATLAS collaboration in the Standard Model and Higgs sectors, with a focus on the recent evidence for the associated production of the Higgs boson and a top quark pair.
Mr
Tae Hyoun Park
(Carleton University)
17/02/2018, 09:30
The ATLAS detector at the Large Hadron Collider records high energy proton-proton collisions. These collisions can be used to test the Standard Model of particle physics that explain fundamental interactions of the universe. In these collisions, collimated sprays of hadronic particles, known as **jets**, are dominant final state object produced. They are key ingredients for most physics...
Mr
Stephen Weber
(Carleton University)
17/02/2018, 09:45
At the large hadron collider, most Z bosons are produced in a qqZ vertex, sometimes in association with jets produced via the strong interaction. A more rare production mode for Z bosons is through a triple gauge coupling via a process called vector boson fusion (VBF). This VBF Z process is similar in nature to VBF Higgs production, which is of great interest and is being studied by large...
Mr
Benjamin Freund
(Université de Montreal)
17/02/2018, 10:00
After the discovery of the Higgs boson at the LHC, it is important to test whether the Standard Model could be only an effective theory, and whether the Higgs sector could be extended to include theories with higher isospin multiplicity. This talk reports on a search for charged resonances produced by vector boson fusion and decaying via WZ$\rightarrow$lvl'l', based on proton-proton collision...
Mr
Sebastien Prince
(McGill University)
17/02/2018, 10:15
The production of a photon in association with a bottom quark in proton collisions is sensitive to the bottom quark content of the proton and to the modelling of b quarks in perturbative QCD calculations. A firm understanding of these aspects is required to properly describe background contributions to new physics interactions at high energies involving b quarks. Differential cross sections of...
Louis-Guillaume Gagnon
(Université de Montréal)
17/02/2018, 11:00
Supersymmetry (SUSY), an hypothetical theory which associate new fundamental particles to each Standard Model (SM) particle, is one of the most well-motivated SM extensions and could solve some of its biggest outstanding problems. For example, if the lepton and baryon numbers are conserved, the lightest supersymmetric particle is stable and interacts only weakly providing a viable dark matter...
Otilia DUCU
(University of Montreal)
17/02/2018, 11:15
A search for strongly produced supersymmetric particles using signatures involving multiple energetic jets and either two isolated same-sign leptons (e or µ), or at least three isolated leptons, is presented. The analysis relies on the identification of b-jets and high missing transverse momentum to achieve good sensitivity. A data sample of proton–proton collisions at sqrt s = 13 TeV recorded...
Mr
Kays Haddad
(McGill University)
17/02/2018, 11:30
Many models that extend the Standard Model Higgs sector predict the existence of at least one charged Higgs boson, in addition to the neutral Higgs boson expected from the Standard Model. While searches have been performed, a charged Higgs boson has not yet been observed. Using physics and detector simulations, the sensitivity of a search for a charged Higgs boson at the forthcoming High...
Ms
Shreya Saha
(McGill University)
17/02/2018, 11:45
A novel B-Physics trigger for the ATLAS detector is being developed to enable lepton universality studies by selecting $B^0\rightarrow K^{*}e^+e^-$ events and complementing the existing $B^0\rightarrow K^{*}\mu^+\mu^-$ trigger. In the Standard Model, lepton universality refers to the fact that the electroweak couplings of the leptons to the gauge bosons is independent of the lepton flavour. A...
Aaron Vincent
(Queen's University)
17/02/2018, 19:00
IceCube’s observation of high-energy extra extraterrestrial neutrinos has signalled the dawn of neutrino astronomy. These events carry energies upward of a PeV and are isotropically distributed in the sky, and thus far their origin remains unknown. However, these data contain valuable information in their energy, flavour composition and arrival directions. I will demonstrate how these...
Dr
Carla Francisco
(Laval University)
17/02/2018, 19:30
The Standard Model, was formulated in the beginning of the '70s but only became empirically establish in the '80s, although it has not been able to describe the gravitational interaction yet, it succeeded in describing the electromagnetic interaction, the weak interaction and strong interaction. The three different types of neutrinos that exist in the Universe are in the exact number...
Mr
Ryan Plestid
(McMaster University and Perimeter Institute)
17/02/2018, 20:00
Upcoming and ongoing neutrino experiments at the intensity frontier offer an unprecedented combination of high luminosity neutrino beams and state of the art detector technology. These include Fermilab's Short Baseline Neutrino Program (SBN) and Deep Underground Neutrino Experiment (DUNE), and CERN's Search for Hidden Particles (SHiP). The powerful combination of large signals and high quality...
Dr
Mohammad Hedayatipour
(University of Alberta)
17/02/2018, 20:15
We examine neutral-current quasi-elastic neutrino-nucleus reactions on $^{12}$C and $^{208}$Pb targets. We use the relativistic mean field theory approach to describe the nuclear dynamics. We compute the cross sections for the scattering of 150-MeV, 500-MeV and 1000-MeV neutrinos on a $^{12}$C target and study the effect of the strange-quark content of the nucleon which appears in these...
Mr
Özer Özdal
(Concordia University)
17/02/2018, 20:30
We study the low scale predictions of supersymmetric standard model extended by $U(1)_{B-L}\times U(1)_{R}$ symmetry, obtained from $SO(10)$ breaking via a left-right supersymmetric model, imposing universal boundary conditions. Two singlet Higgs fields are responsible for the radiative $U(1)_{B-L}\times U(1)_{R}$ symmetry breaking, and a singlet fermion $S$ is introduced to generate neutrino...
Mr
Tyrell Edward Umbach
(Concordia University)
17/02/2018, 20:45
Adinkras are powerful and concise tools for the representation of complex supersymmetrical algebras as graphical objects. As these graphs can be seen as topologically equivalent to hypercubes of varying dimensions then these objects can be studied in terms of their underlying matrix structure. We have discovered a means of classifying all 4D Adinkra graphs in terms of attributes of their...
Dr
Mark Hartz
(Kavli IPMU (WPI), University of Tokyo/TRIUMF)
18/02/2018, 09:00
The T2K experiment is a long baseline neutrino experiment in Japan that detects neutrino oscillations over a 295 km baseline with the Super-Kamiokande detector. In 2013 T2K showed evidence for the oscillation of muon neutrinos into electron neutrinos. This measurement established the possiblility of CP violation in neutrino oscillations. Currently the T2K and NOvA experiments are operating...
Ms
Hannah Wakeling
(McGill University)
18/02/2018, 09:30
The Belle II detector is a competitive, perhaps unique, environment in which to study rare $B$ decays with missing energy to a sensitivity that would exhibit indirect New Physics effects. From a $B$-$\bar{B}$ meson pair that has been produced in the SuperKEKB $B$-factory, one $B$ meson can be can be fully reconstructed through powerful $B$-tagging, which in turn provides strong constraints for...
waleed ahmed
(Mcgill University)
18/02/2018, 09:45
The Belle II experiment at the KEK laboratory is currently undergoing
commissioning, with first physics data anticipated in 2018.
Understanding the material distribution of detector components is of
critical importance for precision e+e- collider experiments like
Belle-II, as the density and distribution of this material impacts
tracking and vertex reconstruction, as well as other...
Ms
Satbir Kaur
(Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS B3H 4R2, Canada)
18/02/2018, 10:00
Charge radius is an important bulk property of the nucleus for investigating nuclear structure. The nuclei lying close to the boundaries of the nuclear chart (the drip lines) have revealed new features like halo and skin. Another new phenomenon that has emerged in the neutron-rich region is the changing or vanishing of magic numbers [1,2]. The knowledge of proton radii is crucial for...
Leyla Atar
(University of Guelph)
18/02/2018, 10:45
According to the Independent Particle Model (IPM) single-particle (SP) states are fully occupied up to the Fermi energy with spectroscopic factors (SF) of one. However, it is well known from electron-induced proton knockout that the SP strength is reduced to about 60-70% for stable nuclei, which has been attributed to the presence of short-range and long-range correlations [1]. This finding...
Christina Burbadge
(University of Guelph)
18/02/2018, 11:00
In ion beam radiation therapy, charged particles are used to irradiate tumor cells for various malignant diseases, such as cancer. Charged particles deposit most their energy at the end of their range, producing a more sophisticated radiation profile while imparting a minimal dose to healthy tissue compared to standard photon-based radiation treatment. However, new complications emerge with...
Ms
Eva Kasanda
(University of Guelph)
18/02/2018, 11:15
Proton therapy is gaining popularity as a tumor irradiation method due to the superior dose distribution offered by heavy charged particles. The subject of range and dose verification has been approached from several angles and fields.
Upon interaction with low-energy protons, certain nuclei undergo fusion-evaporation reactions. The resulting reaction products emit a cascade of...
Prof.
Alain Bellerive
(Carleton University)
18/02/2018, 11:30
