The LEB-MEEB beam transfer line for the Superconducting Super Collider has ten dipoles, twenty four quadrupoles and three septum magnets. The effect of magnet misalignments and field errors on the beam position mismatching and emittance growth is analyzed statistically and a beam position correction scheme is given. The beam position correction of the related LEB absorber line is also discussed.

The beam optics of the 12-GeV/c proton beam transfer line between the Low Energy Booster (LEB) and the Medium Energy Booster (MEB) at the Superconducting Super Collider is presented. The beam is extracted from the LEB vertically and is injected into the MEB through a vertical Lambertson magnet and a horizontal kicker. The beamline has high flexibility for amplitude and dispersion function matching. Effects of various errors in the transfer line are studied, and a beam position correction scheme is proposed. The beam optics of the 12-GeV/c absorber line transporting the beam from the LEB to an absorber during the LEB commissioning is also presented.

The Medium Energy Booster (MEB) is the third of the SSCL accelerators and the largest of the resistive magnet synchrotrons. It accelerates protons from an injection momentum of 12 GeV/c to a top momentum of 200 GeV/c. A beam injection system has been designed to inject the beam transferred from the Low Energy Booster (LEB) onto the MEB closed orbit in the MEB injection insertion region. The beam is injected via a vertical bending Lambertson septum magnet and a horizontal kicker with appropriate matching and very little beam loss and emittance dilution. The beam optics of the injection system is described in this paper. The required parameters of the Lambertson septum magnet and the injection kicker are given.

The beam optics of the transfer line between the Low Energy Booster (LEB) and the Medium Energy Booster (MEB) at the Superconducting Super Collider Laboratory is presented. The 12 GeV/c proton beam is extracted from the LEB and injected into the MEB at strictly defined extraction and injection points. The beamline has a high flexibility for β and η function matchings. Effects of various errors are studied, and a beam position correction scheme is proposed

The Arc transport line, which brings high-energy, high-intensity electron and positron bunches from the SLAC (Stanford Linear Accelerator Center) linac to the Stanford Linear Collider (SLC) final focus section, has been in operation for the past few years. The techniques developed for the optical tuneup and diagnostics, performance, and ongoing improvement programs are reviewed. In the operation of the SLC Arcs, powerful tools are implemented to: (i) correct systematic gradient errors due mainly to horizontal placement errors (phasefix), (ii) correct systematic skew-field errors due mainly to vertical placement errors (skewfix), and (iii) semiempirically modify the effective beta functions at the Arc exit (wirefix)

The betatron phase advance tunes are crucial parameters in the SLC (Stanford Linear Collider) arc optics because of the strong cross coupling between the x and y phase spaces, which takes place at rolled achromat boundaries. Phase measurements have been performed with an accuracy of about 0.3°/cell and, initially, substantial deviations from the design (108°) were observed. Corrections on an achromat-by-achromat basis have been performed to reduce the phase errors within less than 1°/cell. They were done by adjusting a current balance between focusing (F) and defocusing (D) magnets and by changing the horizontal relative displacements of F and D magnets using the XMOV magnet movers or with realignment work

A calculation has been made of both the first- and second-order optics of a uniform-field circular-pole magnet, using the impulse approximation for the fringe-field effects. From this, the first- and second-order resolution has been derived over the entire focal plane of the magnet as a function of the angle of deflection and the momentum of the particle.

The first- and second-order matrix equations for the magnetic optics of the midplane of uniform-field wedge magnets have been derived. The calculations include rotated input and output wedges and curved surfaces on the input and output faces. A second-order matrix algebra has been developed to handle beam transport optics for multiple element systems in a manner similar to that which has been used in the past for the first-order beam transport optics.

A double focusing zero dispersion magnetic spectrometer has been constructed having the following properties:The spectrometer consists of two magnets, each n≅0.25, 110° deflection, 30-in. radius of curvature, bending the particles in the same sense. For the central momentum p0, the useful solid angle Ω0 is ∼0.0055 sr with a possibility of improvement to 0.01 sr. The momentum acceptance Δp is in excess of ±4% with a useful solid angle Ω of ∼0.0015 sr at the 4% points. For a point source and for the solid angles and momentum acceptances given, over 90% of the trajectories terminate within a circle of 2-in. diameter at the focal plane.

Two Faraday-cup electron collectors have been developed which are capable of measuring the absolute integrated beam current of the Stanford linear accelerators to better than 0.5% at electron energies ranging from 4 to 300 Mev. A description of these instruments is given and complete design criteria are offered which allow the extension of the range to Bev energies.

The beam of electron linear accelerators has desirable geometric properties, but usually contains undesirable secondary particles and a relatively broad energy spectrum. In order to dispose of the secondary particles and, at the same time, establish control of the width of the energy spectrum, several magnetic deflection systems have been considered for the Stanford machines. Two such systems are described here, one of which has been adopted for three of the Stanford accelerators. Both systems are capable of translating the beam without energy dispersion.