Quest for the Legitimizing Jesus Deployment of a Contested Symbol by a Non-traditional Religious Movement

There have always been alternative interpretations of Jesus throughout Christian history. The meaning of such a symbol is never static. However, a general theological consensus had maintained an essentially hegemonic position throughout much of the Christianized world for most of the centuries of the Common Era. Jesus as an authoritative religious symbol has been destabilized by modern scholarship. Popular books and movies that explore and experiment with variant interpretations have proliferated in recent years. This contested but still powerful symbol is reinterpreted and employed by many groups, including a non-Christian religious movement based in Salt Lake City. Even though this group does not employ the traditional meanings associated with Jesus, by constructing alternative interpretations they distinguish their identity boundaries with reference to the dominant culture, create plausibility for a different worldview, and lend legitimacy to their movement.College of Arts and Sciencesmonographi

Operation of the rf controls in the CEBAF injector

The CEBAF injector has produced its first relativistic beam with two superconducting cavities. Six RF control modules are used to control amplitude and phase in the chopper cavities, the buncher, the capture section, and the two superconducting cavities. In this paper the required stability and actual performance of the modules are discussed. For the superconducting cavity control, performance is consistent with energy stability of {approx}10{sup {minus}4}

A High-Average-Power Free Electron Laser for Microfabrication and Surface Applications

CEBAF has developed a comprehensive conceptual design of an industrial user facility based on a kilowatt ultraviolet (UV) (160-1000 mm) and infrared (IR) (2-25 micron) free electron laser (FEL) driven by a recirculating, energy recovering 200 MeV superconducting radio frequency (SRF) accelerator. FEL users, CEBAF's partners in the Lase Processing Consortium, including AT&T, DuPont, IBM, Northrop Grumman, 3M, and Xerox, are developing applications such as metal, ceramic, and electronic material micro-fabrication and polymer and metal surface processing, with the overall effort leading to later scale-up to industrial systems at 50-100 kW. Representative applications are described. The proposed high-average-power FEL overcomes limitations of conventional laser sources in available power, cost-effectiveness, tunability, and pulse structure

First lasing of the Jefferson Lab IR Demo FEL

As reported previously [1], Jefferson Lab is building a free-electron laser capable of generating a continuous wave kilowatt laser beam. The driver-accelerator consists of a superconducting, energy-recovery accelerator. The initial stage of the program was to produce over 100 W of average power with no recirculation. In order to provide maximum gain the initial wavelength was chosen to be 5 mu-m and the initial beam energy was chosen to be 38.5 MeV. On June 17, 1998, the laser produced 155 Watts cw power at the laser output with a 98% reflective output coupler. On July 28th, 311 Watts cw power was obtained using a 90% reflective output coupler. A summary of the commissioning activities to date as well as some novel lasing results will be summarized in this paper. Present work is concentrated on optimizing lasing at 5 mu-m, obtaining lasing at 3 mu-m, and commissioning the recirculation transport in preparation for kilowatt lasing this fall

A Proposed High-Power UV Industrial Demonstration Laser at CEBAF

The Laser Processing Consortium, a collaboration of industries, universities, and the Continuous Electron Beam Accelerator Facility (CEBAF) in Newport News, Virginia, has proposed building a demonstration industrial processing laser for surface treatment and micro-machining. The laser is a free-electron laser (FEL) with average power output exceeding 1 kW in the ultraviolet (UV). The design calls for a novel driver accelerator that recovers most of the energy of the exhaust electron beam to produce laser light with good wall-plug efficiency. The laser and accelerator design use technologies that are scalable to much higher power. The authors will describe the critical design issues in the laser such as the stability, power handling, and losses of the optical resonator, and the quality, power, and reliability of the electron beam. They will also describe the calculated laser performance. Finally progress to date on accelerator development and resonator modeling will be reported

Analog Techniques in CEBAF's RF Control System

Recent developments in high-speed analog technology have progressed into the areas of traditional RF technology.Diode-related devices are being replaced by analog IC's in the CEBAF RF control system.Complex phase modulators and attenuators have been successfully tested at 70 MHz.They have three advantages over existing technology: lower cost, less temperature sensitivity, and more linearity.RF signal conditioning components and how to implement the new analog IC's will be covered in this paper