TU1  —  Tuesday Morning Session   (17-Aug-04   08:30—10:30)

Chair: W. Namkung, PAL, Pohang

Paper	Title	Page
TU101	Engineering and Building RF Structures - The Works	237
	D. Schrage LANL, Los Alamos, New Mexico
	The translation of the physics designs of linear accelerators into engineering and manufacturing requirements is discussed. The stages of conceptual design, prototyping, final design, construction, and installation are described for both superconducting (LANL β = 0.175 Spoke Cavity) and normal-conducting (APT/LEDA 6.7 MeV RFQ) accelerators. An overview of codes which have linked accelerator cavity and thermal/structural analysis modules is provided.
	Transparencies
TU102	Survey of Advanced Acceleration Techniques	242
	C.J. Joshi UCLA, Los Angeles, California
	In this talk I will review the recent progress on the production, manipulation, transport, acceleration and focusing of relativistic electron beams using advanced techniques. In particular, I will report recent progress on cathode-less electron injectors, IFEL bunchers and accelerators, plasma accelerating and transport structures, and electron and positron beam focusing using plasmas. The plasma structures for acceleration can be excited either by laser beams or charged-particle beams. The acceleration gradients in either case can be enormous. For unmatched beams the betatron radiation loss, as the beam oscillates transversely in the high gradient accelerating structure, can generate a high brightness x-ray beam. These x-rays can, in turn, be used to generate positrons. Work done by different groups around the world will be reviewed.
	Transparencies
TU103	Development of the UNILAC Towards a Megawatt Beam Injector	246
	W. Barth, L. Dahl, J. Glatz, L. Groening, S. Richter, S. Yaramishev GSI, Darmstadt
	For the future Facility for Antiproton and Ion Research (FAIR) at Darmstadt the present GSI-accelerator complex, consisting of the linear accelerator UNILAC and the heavy ion synchrotron SIS18, is foreseen to serve as an U28+ injector for up to 1012 particles/sec. After a new High Current Injector was installed, many different ion species were accelerated in the UNILAC for physics experiments. In 2001 a high energy physics experiment used up to 2·109 uranium ions per spill (U73+), while a MEVVA ion source was in routine operation for the first time. In the past two years different hardware measures and a careful fine tuning in all sections of the UNILAC resulted in an increase of the beam intensity to 9.5·1010 U27+ ions per 100 μs or 1.5·1010 U73+ ions per 100 μs. The contribution reports results of beam measurements during the high current operation with uranium beams (pulse beam power up to 0.5 MW). One of the major tasks was to optimize the beam matching to the Alvarez-DTL. In addition further upgrades, including improved beam diagnostics, are described, which allow to fill the SIS18 up to the space charge limit of 2.7·1011 U28+ ions per cycle.
	Transparencies
TU104	Developments and Future Plans at ISAC/TRIUMF	251
	P. Schmor TRIUMF, Vancouver
	The ISAC (Isotope Separator and Accelerator) at TRIUMF uses the ISOL (On Line Isotope Separator) technique with up to 100 microA of 500 MeV protons from the TRIUMF cyclotron driver to create exotic isotopes in a thick target. An ion beam formed from these exotic isotopes is transported at 2 keV/u, mass separated, injected into a room temperature RFQ Linac and then into a five-tank drift tube linac that provides variable-energy accelerated exotic-beams from 0.15 to 1.8 MeV/u for nuclear astrophysics experiments. Super conducting rf cavities are presently being added to the linac chain to permit a further increase in the maximum energy of the exotic beams to 6.5 MeV/u. An ECR-based charge state booster is also being added in front of the RFQ to increase the available mass range of the accelerated isotopes from 30 to about 150. A second proton beam line and new target station for target and ion source development have been proposed for ISAC. In the future this new target station could be used as an independent simultaneous source of exotic beams for the experimental program.
	Transparencies