The Beginning, the Journey, and the Goals
Particle physics evolved out of nuclear physics: its overarching goal is to identify the subatomic elements of matter and radiation and understand the fundamental forces that drive their interactions and combinations.
A Particle Physicist works with pioneering technologies such as high-energy colliders to investigate the inner workings of quantum mechanics and more high-energy physics. Particle Physicists may also incorporate other fields such as astronomy into their research, working with cosmic rays from outer space.
In 2008, the Large Hadron Collider (LHC), the world's largest and highest-energy particle accelerator, was constructed in Geneva, Switzerland, to discover new particles and develop new theories. The particles are governed by quantum mechanics and may show both wave-like and particle qualities.
Particle physics leans more towards the theoretical side of experimentation and research. The practice of theoretical particle physics develops the standard model of particles, theories, and mathematical tools related to current and future experiments. Research in this field can lay down the foundations for many other disciplines of science, including chemistry, quantum mechanics, and general relativity.
Radical Inventions that Evolved into Commonplace Articles
Particle physics research has brought about revolutions in our understanding of the world around us. However, scientific exploration is more than just its reward.
An oft-repeated analogy is an expedition climbing Mount Everest. Is someone climbing Mount Everest useful to you in everyday life? Not at first glance, no matter how interesting it is for its own sake. Even so, fleece jackets and breathable waterproof fabrics were first developed for dangerous mountaineering expeditions and are now cheaply available and indispensable for the general public.
Beyond the Lab and the Textbook
In many ways, the impact of particle physics goes far beyond the laboratory and the textbook. Given that particle physics asks big questions, finding the answers requires unique and often colossal equipment. The tools of particle physics - sophisticated accelerators, sensitive detectors, grid computing, and high-volume data storage and analysis - have a significant and lasting impact on the quality of life for people around the globe.
Over the decades, particle physics has developed the technologies needed to accurately track particles as they collide and transform into hundreds of other particles. This tracking is now essential for the computer tomography, MRIs and PET scans that allow a doctor to peer inside the human body and see what’s wrong.
Once a disease is diagnosed, a doctor usually chooses to treat it with prescription medication. Many medications are developed by particle accelerators called synchrotrons, which produce exceptionally intense beams of X-rays that can determine the precise structure of disease-causing mutations and viruses. They screen potential drugs to find ones that will most likely work. Kaletra, one of the most-prescribed AIDS medications, and Tamiflu, an antiviral treatment to slow the spread of influenza, were developed using synchrotrons.
Accelerator-based therapy helps tens of millions of patients receive X-rays, proton, and ion therapy to treat cancer at more than 10,000 hospitals and medical facilities worldwide.
Myriad Applications
There are the semiconductors within a regular laptop, made smaller and faster through accelerator-assisted manufacturing. There is the touch-screen technology that has been reinvented in many applications. Then there is the ubiquitous World Wide Web, originally developed nearly two decades ago to share particle physics results around the globe. The Web now stimulates nearly US$ two trillion in annual commercial traffic.
The knowledge and tools developed in particle physics spur developments in biology, chemistry, materials science, and computer science. One such tool is Scientific Linux, an operating system used to manage a computer’s resources and provide standard services for computer programs. Its primary aim is to provide researchers with a computing platform that is stable, secure, and readily customized.
The Lab is Your Oyster
Whether you are employed in industry or an academic research setting, the work is usually laboratory-based. Particle Physicists employed in the industry ensure the manufacture of new products and materials regardless of scale. If you work in industrial research and development, you will probably be allocated specific projects. In smaller organizations, you may be involved in all stages of production, from concept to delivery to the customer. Particle Physicists working in academia teach or lecture and generally manage a group of research students or a research team comprising technicians and support staff.
Strategic Approaches to Work
The majority of young Particle Physicists hope to stick to the field and are more strategic in their approach to work. The enormous projects that dominate particle physics typically take years or even decades to build. The LHC was proposed in 1984, approved for construction in 1994, and started taking data in 2010.
No grad student or postdoc could hope to work on such a project from its inception to completion. But they must analyze real data to have any chance of advancing. To satisfy both the need for data to analyze and the desire to work on the next best thing, many young Particle Physicists moonlight in multiple efforts.
Young researchers in the field prefer smaller experiments to larger ones; it allows them to carve out a niche within a minor team. Some young Particle Physicists focus less on specialization and more on developing a broadly applicable skill set to increase flexibility.