PBPL Photoinjector

The 1.6 cell S-band RF gun is one of the most highly successful innovations in RF technology associated with the PBPL and its collaborating institutions. This device is the enabling technology of most of the high brightness, picosecond beam laboratories world-wide. Originally developed at BNL, and then put in its commonly used form by a BNL/SLAC/UCLA collaboration, versions of this device have been built wholly or partially at UCLA for BNL ATF, Univ. of Maryland, Livermore PLEIADES lab, SLAC GTF, UCLA Neptune Lab (2 versions), and SLAC ORION. The most recent generation of 1.6 cell S-band RF gun developed in collaboration with the SLAC ARDB group for the ORION project (shown at left) is also the basis for the RF gun at the SPARC photoinjector. This version of the gun was processed up to 15 MW of power, or over 150 MV/m on-axis fields. The RF power waveguide, visible on the upper right, is coupled to the full cell, and vacuum is pumped through a symmetrizing port. Also symmetrically placed in the full cell are the two tuners, at 90 degrees with respect to the waveguide (the upper one is visible), and the entrance and exit laser ports, half way between waveguide and the vacuum ports. The beam exit port is on the front of the picture. The symmetry of the structure determines that of the electromagnetic field distribution, and it is important to avoid dipolar excitation components; the lowest perturbation of the RF mode is limited to quadrupole, with negligible effect on the beam dynamics.

PBPL Visitor and Speaker Info

Parking

Parking is provided in Lot 2 on the east side of campus -- use the Westholm entrance off of Hilgard Ave. From the north west corner of lot 2 cross the street to the west. Walk toward the inverted fountain, Knudsen is the six story building on your right, north west of the fountain. The conference room is located on the third floor 3-171. Turn right as you get off the elevator.

Map showing locations of Knudsen Hall and Parking Lot 2 (PS-2)

Photos of Knudsen Hall: photo 1 photo 2

Photos of 3rd Floor Offices: photo 1 photo 2

Lecture Format and Audience

An informal lecture is held periodically with a maximum duration of one hour (including questions and discussion). The audience will include mostly group members and other scientists interested in beams & accelerators. As the audience may include some inexperienced undergraduate students, an introductory pedagogical slide or two may be appropriate.

The time limit will be ruthlessly enforced!

Overhead Projector

There is VGA over head projector that can be used. It is compatible with PC laptops and macs, with a converter. There are also PC's in the conference room that can be used for presentations.

Other

A white board is available for dazzling us with on-the-fly derivations. Other mutlimedia equipment (i.e. transperency projector) must be arranged for ahread of time.

Occupancy

The conference room can accommodate 10-15 people.

Particle Beam Physics Laboratory

History