Six Surface Machining Station

The machines currently on the market for rotation of a part make machining only possible on up to five surfaces. This makes machining the sixth surface a time consuming process. For industry a station that rotates a part to expose all six of its faces is ideal for speeding up the machining process. The six face machining station is used for rotating a three inch (or smaller) cube to be machined on all six of its surfaces. The cube has four holes drilled into it prior to mounting in the machining station. The cube is held in place by four pins which are inserted into the holes. The linear motion is controlled by two opposing motors fastened to two lead screws. The rotational motion is controlled by two high torque motors. All four of the motors are controlled by a basic stamp program

Six Surface Machining Station

The machines currently on the market for rotation of a part make machining only possible on up to five surfaces. This makes machining the sixth surface a time consuming process. For industry a station that rotates a part to expose all six of its faces is ideal for speeding up the machining process. The six face machining station is used for rotating a three inch (or smaller) cube to be machined on all six of its surfaces. The cube has four holes drilled into it prior to mounting in the machining station. The cube is held in place by four pins which are inserted into the holes. The linear motion is controlled by two opposing motors fastened to two lead screws. The rotational motion is controlled by two high torque motors. All four of the motors are controlled by a basic stamp program

Strongly tapered helical undulator system for FAST-GREENS installation

International audienceRadiaBeam, in collaboration with UCLA and Fermilab, is developing a strongly tapered helical undulator system for the Tapering Enhanced Stimulated Superradiant Amplification experiment at 515 nm (TESSA-515). The experiment will be carried out at the FAST facility at Fermilab as a Gamma-Ray high Efficiency ENhanced Source (FAST-GREENS). The undulator system was designed by UCLA, engineered by RadiaBeam, and will be installed on the beamline at Fermilab. The design is based on a permanent magnet Halbach scheme of four 1-meter long undulator sections; two of which have been completed and installed. The undulator period is fixed at 32 mm and the magnetic field amplitude can be tapered by tuning the gap along the interaction. Each magnet can be individually adjusted by 1 mm, offering up to 25% magnetic field tunability with a minimum gap of 5.58 mm. This paper discusses the design and engineering of the undulator system and the stage 0 installation status

FAST-GREENS: A High Efficiency Free Electron Laser Driven by Superconducting RF Accelerator

International audienceIn this paper we’ll describe the FAST-GREENS experimental program where a 4 m-long strongly tapered helical undulator with a seeded prebuncher is used in the high gain TESSA regime to convert a significant fraction (up to 10 %) of energy from the 240 MeV electron beam from the FAST linac to coherent 515 nm radiation. We’ll also discuss the longer term plans for the setup where by embedding the undulator in an optical cavity matched with the high repetition rate from the superconducting accelerator (3,9 MHz), a very high average power laser source can be obtained. Eventually, the laser pulses can be redirected onto the relativistic electrons to generate by inverse compton scattering a very high flux of circularly polarized gamma rays for polarized positron production

FAST-GREENS: A High Efficiency Free Electron Laser Driven by Superconducting RF Accelerator

International audienceIn this paper we’ll describe the FAST-GREENS experimental program where a 4 m-long strongly tapered helical undulator with a seeded prebuncher is used in the high gain TESSA regime to convert a significant fraction (up to 10 %) of energy from the 240 MeV electron beam from the FAST linac to coherent 515 nm radiation. We’ll also discuss the longer term plans for the setup where by embedding the undulator in an optical cavity matched with the high repetition rate from the superconducting accelerator (3,9 MHz), a very high average power laser source can be obtained. Eventually, the laser pulses can be redirected onto the relativistic electrons to generate by inverse compton scattering a very high flux of circularly polarized gamma rays for polarized positron production