59 



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



ALTERNATING GRADIENT SYNCHROTRON (AGS) 

 Brookhaven National Laboratory (BNL) 

 U.S. Dept. of Energy 



"Big Science" Descriptor : High-energy physics (soon also nuclear 

 physics) 



Description of Facility/Instrument : This synchrotron provides pro- 

 tons on fixed targets at energies up to 33 GeV, and various 

 secondary beams. The AGS main ring is 800 meters in circum- 

 ference and contains 240 magnets. Current research focuses on 

 neutrino Interactions and the study of certain rare decay modes 

 of the K meson. Other experiments involve the study of inter- 

 actions of protons, plons, kaons , etc. with target nuclei. 

 Capability to accelerate polarized protons has been added re- 

 cently. A link to the Tandem Van de Graaff is being established 

 to provide the capability to accelerate medium weight heavy tons. 



Date of Construction : 1956-1960, upgraded 1966-1971 



C onstruction Cost : Original : $79 million 



1984 $$ : $325 million 



Present International Cooperation 



NatioDality(8) of Ownership : U.S. 



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



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



Natlonallty(s) of Researchers : U.S. primarily, but also from 

 Mexico, Japan, Canada, Denmark, France, Great Britain, 

 Israel, Italy, the Netherlands, the U.S.S.R., Sweden, 

 Switzerland, the Federal Republic of Germany, China, and 

 Yugoslavia 



Because high-energy physics is an international activity, 

 with knowledge freely shared among its practitioners, this 

 laboratory has extensive interactions with people and institu- 

 tions in foreign countries. 



Of about 300 scientists actively involved In current 

 utilization of the AGS, some 50 are from 17 foreign Insti- 

 tutions. 



There are collaboration on current experiments with the 

 Japanese and with the Canadians. The U.S. -Japanese experi- 

 ment, with Japanese scientists from KEK and from Osaka 

 University, has been in progress for several years. Japan 

 has furnished about one-fourth of the manpower and equip- 

 ment for a detector that cost $4-$5 million total. Canadians 

 from TRIUMF are participating with the United States In 



