ITEP Proton Synchrotron Reconstruction

The ITEP (Institute for Theoretical and Experimental Physics) 10-GeV proton synchrotron (U-10) is now being reconstructed into a proton and ion accelerator complex capable of accelerating ions of all atoms with various Z/A values. The first stage of the reconstruction includes construction of an ion injector as well as a beam transport line (from the new injector to the synchrotron), and modification of proton synchrotron systems necessary for ion acceleration. In particular, the synchrotron vacuum chamber and its pumping system must be modified to reach 10/sup -10/-torr vacuum instead of the present 10/sup -6/ torr. These modernizations are practically complete. In 1988, He/sup 2+/ ions were injected into the synchrotron and accelerated up to 4.3 GeV/A. In the current year, an effort will be made to accelerate some heavier ions obtained from the new injector. It is expected that light ions will be accelerated up to 4 GeV/A, and heavy ones (not fully stripped) up to 1 GeV/A.<>