144 



Stoughton, Wl., U.S.A. 



TANTALUS, ALADDIN 



Wisconsin Synchrotron Radiation Center (SRC) 



University of Wisconsin 



"Big Science" Descriptor ; Materials science 



Description of Facility/Instrument : Tantalus is a synchrotron radia- 

 tion (SR) source providing radiation in the ultraviolet range up 

 to 150 eV. It would cost approximately $5 million to duplicate 

 this 240 MeV storage ring today. Aladdin is an enhanced SR source 

 with a 1.0 GeV ring with 36 ports designed for very high brightness. 

 It is currently in the conmissloning stage. The facility Includes 

 a very soft x-ray source and associated photoemisslon spectrometers. 

 The construction and instrumentation costs so far are $6 million 

 and $7.5 million respectively. Another $18 million for an upgrade 

 can be anticipated. The total capital cost of the SRC is estimated 

 to be about $44 million. 



Date of Construction ; 1968 for Tantalus and 1978 for Aladdin. 



Construction Cost ; 1984 $$ : $44 million 



Present International Cooperation 



Nationallty(s) of Ownership : U.S. 



Natlonality(3) of Operational Funding : U.S. 



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



Natlonality(s) of Researchers ; Primarily U.S. Currently there 

 is a Canadian Beam Line on Aladdin funded by the Canadian 

 Synchrotron Radiation Center ($l-$2 million). 



Potential for Future International Cooperation : There are probably 10 

 to 12 foreign users of SRC facilities each year. If foreign 

 users were Interested In putting up their own beam lines on 

 Aladdin, this could be accommodated. 



Other Information : The beam line instrumentation on Aladdin is estl- 

 mated to be about $1 million per beam line. It is expected that 

 20 beam lines will be Implemented immediately with expansion to 

 30 in several years. 



