The Linac Coherent Light Source (LCLS) is a SASE xray Free-Electron Laser (FEL) project under construction at SLAC [1]. The injector section, from drive-laser and RF photocathode gun through the first bunch compressor, was commissioned in the spring and summer of 2007. The second phase of commissioning, including the second bunch compressor and various main linac modifications, was completed in...

The heavy ion trap (HITRAP) linac will decelerate highly charged ions up to U, provided by the GSI accelerator facility at 4 MeV/u down to 6 keV/u. The highly charged ions will subsequently be injected into a Penning trap for beam cooling. Therefore the HITRAP facility will provide unique pulsed beams of up to about 10 highly charged ions at very low energies for atomic physics experiments. The...

Three alternative designs of the European Spallation Source (ESS) high energy linac are described. The most promising ones are either a normalconducting (nc) coupled cavity linac (CCL) up to final energy or a change at 407 MeV to only one group of 6 cell superconducting (sc) elliptical cavities. Fully 3d Monte Carlo simulations are presented for both options, optimized for reduced halo formatio...

The ISAC superconducting linac is a fully operational machine that routinely provides beam to experiments. The linac consists of twenty superconducting independently phased cavities housed in five cryomodules. The initial tune is done manually aided by MATLAB routines to phase the linac and set the correct optics. From the initial tune we calculate the gradient at which each cavity operates bas...

The accelerating structure for the superconducting linac booster for the 15 UD Pelletron at IUAC is a Nb QWR cavity, designed and fabricated as a joint collaboration between IUAC and ANL, USA. Initial cavities required for the first linac module were fabricated at ANL. For fabrication of cavities required for future modules a Superconducting Resonator Fabrication Facility has been set up at IUA...

The high-intensity proton accelerator facility project in Japan which comprises a 600-MeV linac, a 3-GeV, 1-MW rapid-cycling synchrotron (RCS), and a 50-GeV synchrotron will promote many important scientific and engineering fields such as life science, materials science, nuclear physics and fundamental particle physics. The construction of the low-energy front 60-MeV linac has been already star...

A program to design a high brilliance electron source suitable for a short wavelength Linac-based FEL is presented. The goal of the project is to develop a multicell integrated photoinjector capable of delivering 1 nC bunches with emittance below 1 mm mrad. This will be the first step toward a possible development of a IV generation light source test facility based on the existing Trieste Linac...

.In this paper, we discuss some basic beam dynamics issues related to obtaining and preserving the luminosity of a next generation linear collider. In Figure 1 you see a diagram illustrating the main subsystems of one-half of the collider. The beams are extracted from a damping ring and compressed in length by the first bunch compressor. They are then accelerated in a preaccelerator linac up to...

The main obstacle to emittance preservation in the main linac of a linear collider is the alignment of the quadrupoles and accelerating cavities with respect to the beam. The misalignment tolerances in the case of the TESLA superconducting main linac are reviewed. Simulations of possible beam-based alignment algorithms to meet these tolerances are presented. Presented at 2002 European Particle ...

The TRASCO project for nuclear waste transmutation [1] requires a 5-100 MeV linac for acceleration of a 30 mA proton beam. Generally, room temperature Drift Tube Linac structures are used in this energy range; however, since the high duty cycle required for high current beams implies a very high power density on the resonators walls, the superconducting solution would offer many advantages. Amo...