Photosensor Student Research Assistant (On-site)

Come join us to see how we are working to unlock the mysteries of the universe and shape the future. Apply now and be part of our extraordinary journey.

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Overview:

Neutrino oscillations are the only experimentally verified observation of a process not described by the Standard Model (SM) of particle physics. Since their discovery in 1998, we have learnt a great deal about the parameters that govern these oscillations, but many questions remain. Perhaps the most exciting of these is whether neutrino oscillations violate charge-parity (CP) symmetry, which could potentially explain why we live in a matter-dominated universe.

Super-Kamiokande (Super-K) has been one of the longest-running and most successful particle physics experiments of its generation. Its measurements of solar, atmospheric, and accelerator neutrinos have revealed much about the nature of these ghostly particles, culminating in the Nobel Prize in Physics in 2015 and the Breakthrough Prize in 2016. Since 2018, Super-K has undergone significant upgrades to load the detector with gadolinium (Gd) for measuring the diffuse supernova neutrino background (DSNB). In addition to Super-K, the TRIUMF neutrino group is also involved in the next-generation Hyper-Kamiokande (Hyper-K) experiment in Japan, which aims to provide a definitive answer on CP violation in the lepton sector. One of the biggest challenges for both Super-K and Hyper-K is achieving a complete understanding of the photosensors that line the inner walls of these detectors — the photomultiplier tubes (PMTs). The current understanding of the PMTs needs to be significantly improved to reduce detector systematic uncertainties and reach the full physics potential of the experiments, particularly for the CP-violation measurement.

The photosensor test facility (PTF) at TRIUMF is a unique facility that can perform such a task. The PTF is designed to carry out detailed characterization of PMTs. Its key feature is the ability to fire laser light at a PMT submerged in water, from arbitrary angles and positions. This is achieved using an optical head that is translated and rotated via a motor-controlled gantry system. One of the goals of this position is to assist with data taking using PTF, as well as with the data analysis and modelling of the PMT response.

Duties:

- Operate PTF to take data of Super-K PMTs and newly developed Hyper-K photosensors, and following analysis (ROOT, Python).

- Development and debugging of the modelling of the system with simulation tools (e.g. COMSOL, GEANT4).

- Assist with many elements of operation, such as motor-controllers, magnetic field measurements, and electrical pulse digitizers.

- Assist with maintenance and potential upgrades of PTF components, such as gantry system, optical boxes, Helmholtz coils, PMT mounts and cabling

Skills Learned During This Work Experience:

- Experience in many aspects of a complicated physics problem. This will range from low level work on lab measurement systems and electronics, to the description of the high level capabilities of a next-generation neutrino experiment.

- Operation of PMTs

- Operation of a complicated precision calibration system

- Critical thinking and problem solving

- Analysis of critical detector data and assessment of statistical and systematic uncertainties

- Presentation skills from reports in regular meetings at national and international levels

Qualifications/Skills Preferred:

• Undergraduate students in physics, engineering physics or physics and astronomy
• Prior co-op experience is optional
• Programming Languages: C++, Python
• Familiarity with Linux
• We are looking for a quick learner, who can work independently and in a team

Skills required:

C++ Programming Language, CERN ROOT, Communication, Critical Thinking, Data Analysis, Debugging, Digital Oscilloscope, Geant4, Group Problem Solving, Independent Learning, Learning Quickly, Linux, Optics, Particle Physics, Photomultiplier Tubes, Professional Presentation, Python (Programming Language), Statistical Data Analysis

TRIUMF, Canada's national laboratory for particle and nuclear physics, is situated on the vibrant south campus of the University of British Columbia, nestled within the beautiful Pacific Spirit Park in Vancouver, BC.

At TRIUMF, we value our employees and are committed to providing a competitive total rewards package. In addition to a competitive salary, we offer comprehensive benefits that promote the well-being and security of our staff. Our organization provides an excellent opportunity to grow your career in a high-profile national research facility, where you can make a difference.

If you are passionate about science, engineering and technology, driven to excel, and eager to be part of a collaborative and forward-thinking organization, we encourage you to apply. Take the next step in your career journey with TRIUMF.

TRIUMF offers help with travel costs for students outside the Vancouver and surrounding area.

Applications must have the following documents uploaded:

• A resume/CV
• A covering letter that includes your interest in and your qualifications for the specific position
• A copy of academic transcript (unofficial copies are accepted)

Incomplete applications may not be considered.

Applications closing date:

September 21, 2026

Period of Work (possible 4 month extension):

January 04, 2027-April 30, 2027

Salary is commensurate with academic progress and previous relevant work experience, and ranges from $ 2815 to $ 4238 per month including 4% vacation pay.

TRIUMF is an equal-opportunity employer committed to diversity in the workplace, and we welcome applications from all qualified undergraduate students as defined below (unless stated otherwise above):

• Canadian undergraduate students or Canadian Permanent Resident undergraduate students enrolled in an accredited post-secondary institution in Canada (or outside Canada) who are studying in a vocational or professional training program that leads to a degree, diploma or certificate.

• Foreign full-time undergraduate students currently enrolled at a designated learning institution at the post-secondary level, and who are studying in an academic, vocational or professional training program that leads to a degree, diploma or certificate that is at least six months in duration, and who have a valid Canadian study permit which allows for employment off-campus, and who have applied for a Social Insurance Number

• Foreign undergraduate students enrolled in a recognized undergraduate program of study abroad who have accepted, or are in the process of accepting, an "Invitation to Apply" for a work permit under the International Experience Canada (IEC) program http://www.canada.ca/en/immigration-refugees-citizenship/services/work-canada/iec/apply-work-permit.html.

At TRIUMF, we’re passionate about accelerating discovery and innovation to improve lives and build a better world. Equity, diversity, and inclusion are integral to excellence and enhance our ability to create knowledge and opportunity for all.

Together, we are committed to building an inclusive culture that encourages, supports, and celebrates the voices of our employees, students, partners, and the people and communities we serve.

Contact information:
Email: student@triumf.ca
Phone: 604.222.1047
Fax: 604.222.3791

4004 Wesbrook Mall
Vancouver, BC
V6T 2A3