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پاورپوینت LIGO PRESENTATION PHYSICS 43

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LIGOLASER INTERFEROMETER GRAVITATIONAL-WAVE OBSERVATORY

Presented by:

Matthew Schantz

Travis Heffernan

Physics 43, SRJC

5/12/08

Younes Ataiiyan

What is LIGO?

The laser interferometers at LIGO use the fringe pattern of a divided laser beam to measure any lengthening or shortening of space due to gravitational waves. The divided laser beam will travel through two steel vacuum tubes oriented at a right angle. When a gravitational wave distortion causes one beam to lengthen and the other to shrink, the interference pattern of the two beams will. LIGO was first designed to have an effective range of ~70 million light years.

http://www.ligo-la.caltech.edu/worksheets/SEC/LIGO101.pdf

http://www.phys.lsu.edu/lsusps/zonemeeting2007/LIGO.gif

Facts of LIGO

LIGO's interferometers are the world's largest precision optical instruments. They are housed in one of the world's largest vacuum systems (volume of nearly 300,000 cubic feet). The beam tubes and associated chambers must be evacuated to a pressure of only one-trillionth of an atmosphere, so that the laser beams can travel in a clear path with a minimum of scattering due to stray gases. To do this they use a steel with a very low dissolved hydrogen content.

The LIGO laser light comes from high-power, solid-state lasers that must be so well regulated that, over one hundredth of a second, the frequency will vary by less than a few millionths of a cycle.

The suspended mirrors must be so well shielded from vibration that the random motion of the atoms within the mirrors and suspension fibers can be detected.

More than 30 different control systems are required to hold all the lasers and mirrors in proper alignment and position, to within a tiny fraction of a wavelength over the four-kilometer lengths of both arms of the interferometers.

http://www.ligo-la.caltech.edu/contents/overviewsci.htm

History of LIGO?

LIGO is a program with two observatories currently in the United States located in the cities of Hanford, Washington and Livingston, Louisiana. It was cofounded in 1992 by Kip Thorne and Ronald Drever of California Institute of Technology and Rainer Weiss of Massachusetts Institute of Technology, LIGO is a joint project between scientists at MIT and Caltech. The project cost of $365 million dollars and is the largest funding ever received for a project by the National Science Foundation (NSF).

Today LIGO is a growing research project with now recording well over 600 researchers working and analyzing data from LIGO.


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پاورپوینت LIGO PRESENTATION PHYSICS 43

دانلود pdf کتابAdvance in Nuclear Physics مولف Matthias Burkardt , James J. Kelly

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دانلود pdf کتابAdvance in Nuclear Physics مولف Matthias Burkardt , James J. Kelly


دانلود pdf کتابAdvances in Nuclear Physics  مولف Matthias Burkardt , James J. Kelly

 عنوان کتاب :Advances in Nuclear Physics

 مولف :  Matthias Burkardt and James j.Kelly

 

 تعاد صفحات : 315

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دانلود pdf کتابAdvances in Nuclear Physics مولف Matthias Burkardt , James J. Kelly

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دانلود pdf کتابAdvances in Nuclear Physics مولف Matthias Burkardt , James J. Kelly


دانلود pdf کتابAdvances in Nuclear Physics  مولف Matthias Burkardt , James J. Kelly

 عنوان کتاب :Advances in Nuclear Physics

 مولف :  Matthias Burkardt and James j.Kelly

 

 تعاد صفحات : 315

حجم : 33/3MB

  زبان : انگلیسی

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کتاب Fusion Plasma Physics زبان اصلی

اختصاصی از یارا فایل کتاب Fusion Plasma Physics زبان اصلی دانلود با لینک مستقیم و پرسرعت .

کتاب Fusion Plasma Physics زبان اصلی


کتاب Fusion Plasma Physics زبان اصلی

کتاب Fusion Plasma Physics زبان اصلی

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ویرایش دوم

This revised and enlarged second edition of the popular textbook and reference contains comprehensive treatments of both the established foundations of magnetic fusion plasma physics and of the newly developing areas of active research. It concludes with a look ahead to fusion power reactors of the future. The well-established topics of fusion plasma physics -- basic plasma phenomena, Coulomb scattering, drifts of charged particles in magnetic and electric fields, plasma confinement by magnetic fields, kinetic and fluid collective plasma theories, plasma equilibria and flux surface geometry, plasma waves and instabilities, classical and neoclassical transport, plasma-materials interactions, radiation, etc. -- are fully developed from first principles through to the computational models employed in modern plasma physics.
The new and emerging topics of fusion plasma physics research -- fluctuation-driven plasma transport and gyrokinetic/gyrofluid computational methodology, the physics of the divertor, neutral atom recycling and transport, impurity ion transport, the physics of the plasma edge (diffusive and non-diffusive transport, MARFEs, ELMs, the L-H transition, thermal-radiative instabilities, shear suppression of transport, velocity spin-up), etc. -- are comprehensively developed and related to the experimental evidence. Operational limits on the performance of future fusion reactors are developed from plasma physics and engineering constraints, and conceptual designs of future fusion power reactors are discussed.
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کتاب Khans The Physics of Radiation Therapy Fifth Edition زبان اصلی

اختصاصی از یارا فایل کتاب Khans The Physics of Radiation Therapy Fifth Edition زبان اصلی دانلود با لینک مستقیم و پرسرعت .

کتاب Khans The Physics of Radiation Therapy Fifth Edition زبان اصلی


کتاب Khan's The Physics of Radiation Therapy Fifth Edition زبان اصلی

کتاب Khan's The Physics of Radiation Therapy Fifth Edition زبان اصلی

ویرایش پنجم 2014

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ویرایش پنجم کتاب فوق العاده فیزیک رادیوتراپی خان یکی از کتاب های رفرنس در زمینه فیزیک رادیوتراپی می باشد که سالهاست مورد استفاده اساتید و دانشجویان فیزیک پزشکی و پرتوپزشکی و پیراپزشکی قرار گرفته است.همچنین این کتاب یکی از رفرنس های پیشنهادی برای آزمون های دکتری می باشد.

Expand your understanding of the physics and practical clinical applications of advanced radiation therapy technologies with Khan's The Physics of Radiation Therapy, 5th edition, the book that set the standard in the field. This classic full-color text helps the entire radiation therapy team—radiation oncologists, medical physicists, dosimetrists, and radiation therapists—develop a thorough understanding of 3D conformal radiotherapy (3D-CRT), stereotactic radiosurgery (SRS), high dose-rate remote afterloaders (HDR), intensity modulated radiation therapy (IMRT), image-guided radiation therapy (IGRT), Volumetric Modulated Arc Therapy (VMAT), and proton beam therapy, as well as the physical concepts underlying treatment planning, treatment delivery, and dosimetry.

In preparing this new Fifth Edition, Dr. Kahn and new co-author Dr. John Gibbons made chapter-by-chapter revisions in the light of the latest developments in the field, adding new discussions, a new chapter, and new color illustrations throughout. Now even more precise and relevant, this edition is ideal as a reference book for practitioners, a textbook for students, and a constant companion for those preparing for their board exams.

 


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