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Upon publication in 1939, [3] news of the klystron immediately influenced the work of US and UK researchers working on radar equipment. The Varians went on to found Varian Associates to commercialize the technology (for example, to make small linear accelerators to generate photons for external beam radiation therapy ).
Like a conventional machine used for X-ray external beam radiotherapy (often referred to as a linear accelerator or linac, their main component), it [the tomotherapy machine] generates the radiation beam, but the external appearance of the machine, patient positioning, and treatment delivery differ. Conventional linacs do not work on a slice-by ...
On April 2, 1999, these divisions split to become Varian Semiconductor, Varian, Inc., and Varian Medical Systems. [12] [13] In August 2020, Siemens Healthineers announced plans to acquire Varian Medical Systems in an all-stock deal valued at $16.4 billion. [14] [15] The deal was approved and completed on 15 April 2021. [16]
Varian Associates was one of the first high-tech companies in Silicon Valley.It was founded in 1948 by Russell H. and Sigurd F. Varian, William Webster Hansen, and Edward Ginzton to sell the klystron, the first vacuum tube which could amplify electromagnetic waves at microwave frequencies, and other electromagnetic equipment.
Varian was spun off from Varian Associates in 1999 and was purchased by Agilent Technologies in May 2010 for $1.5 billion, or $52 per share. [ 2 ] Varian Inc. had its corporate headquarters in Palo Alto , California , and offices in Australia, the Benelux countries, Brazil, Canada, China, Germany, France, Italy, Japan, Korea, Russia, Sweden ...
Fermitron was an accelerator sketched by Enrico Fermi on a notepad in the 1940s proposing an accelerator in stable orbit around the Earth. The undulator radiation collider [7] is a design for an accelerator with a center-of-mass energy around the GUT scale. It would be light-weeks across and require the construction of a Dyson swarm around the Sun.
2) Texas The SEC didn't get four teams in the field, but the Longhorns only lost to one team this year (Georgia), and they've got a very reasonable path to the semifinals as the highest-ranked at ...
Varian TrueBeam Linear Accelerator, used for delivering IMRT Intensity-modulated radiation therapy (IMRT) is an advanced type of high-precision radiation that is the next generation of 3DCRT. [ 76 ] IMRT also improves the ability to conform the treatment volume to concave tumor shapes, [ 10 ] for example when the tumor is wrapped around a ...