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Palo Alto, CA., U.S.A. 



SLAC LINEAR ACCELERATOR 



Stanford Linear Accelerator Center (SLAC) 



U.S. Dept. of Energy 



"Big Science" Descriptor : High-energy physics 



Description of Facility/Instrument ; This facility Is a two-mile long 

 linear electron accelerator (llnac) that can produce Intense 

 beams of electrons at energies up to 32 billion electron volts 

 (GeV), or of positrons with energies up to 20 GeV. The electrons 

 and positrons are used for fixed target experiments to probe the 

 ultimate structure of matter In ways that reveal more details 

 than any other probe. The llnac also can be used as the Injector 

 for the SPEAR and PEP storage rings and will be used to Inject 

 beams Into the Stanford Linear Collider (SLC). Starting in FY85, 

 the linear accelerator at SLAC also can be operated for nuclear 

 physics research using a new off-axis source and injector. The 

 llnac 's energy will be increased from 32 GeV to 50 GeV for both 

 electrons and positrons by the end of FY86. 



Date of Construction : 1961-1968 



Construction Cost ; Original ; $114 million 



1984 $$ : $486 million 



Present International Cooperation 



Natlonality(s) of Ownership : U.S. 



Nationality(s) of Operational Funding : U.S. 



Natlonallty(s) of Management Staff : U.S. 



Nationallty(s) of Researchers : Primarily U.S. but also from 



Switzerland, Israel, Japan, the Federal Republic of Germany, 

 the Netherlands, Italy, Canada, the Peoples Republic of 

 China, England, and Poland. Users include 138 foreign re- 

 searchers from 37 foreign institutions. 



Because high-energy physics is an International activity, 

 with knowledge freely shared among its practitioners, this 

 laboratory has extensive Interactions with people and 

 institutions in foreign countries. 



Typically, about 400 physicists are Involved in the SLAC 

 research program each year, of which about 15 percent are 

 from foreign institutions. SLAC has a significant collabora- 

 tion with the Institute of High Energy Physics of the Peoples 

 Republic of China (PRC) as consultant to the PRC on building 

 a 2.5 GeV electron-positron collider and a detector. There 

 is collaboration on the SLAC Linear Detector (SLD) between 

 the United States and Italy, Canada, and Great Britain. In 



