65 



Geneva, SWITZERLAND 



LEP DETECTOR- ALEPH 

 CERN 



"Big Science" Descriptor : High-energy physics 



Description of Facility/Instrument : The Apparatus for LEP pHysics 

 (ALEPH) has a large superconducting coil enclosing a central 

 track detector which permits precise momentum determinations 

 of charged particles over a wide energy range. 



Date of Construction : Due in 1988 



Construction Cost ; 1984 $$ : $32 million 



Present International Cooperation 

 Nationallty(s) of Ownership : 



Nationality(s) of Operational Funding : (Multinational) 

 Nationality(s) of Management Staff ; 

 Nationallty(s) of Researchers ; ALEPH involves about 300 



researchers from 25 research centers in nine countries, 



including the United States. 



Geneva, SWITZERLAND 



LEP DETECTOR-DELPHI 

 CERN 



"Big Science" Descriptor ; High-energy physics 



Description of Facility/Instrument : The Detector with Lepton, Photon, 

 and Hadron Identification (DELPHI) is designed to provide three- 

 dimensional measurements, fine grain energy deposition, and par- 

 ticle Identification over the complete solid angle surrounding 

 the beam intersection. 



Date of Construction ; Due in 1988 



Construction Cost ; 1984 $$ ; $30 million 



Present International Cooperation 

 Nationality(s) of Ownership : 



Nationallty(s) of Operational Funding ; (Multinational) 



Natlonality(s) of Management Staff ; 



Nationality(s) of Researchers ; DELPHI involves about 300 researchers 

 from 30 research institutes in 17 countries, including the 

 Dnited States. 



