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DESIGN, CONSTRUCTION, AND STATUS OF ALL NIOBIUM SUPERCONDUCTING PHOTOINJECTOR AT BNL.

Description: We present here the design and construction of an all niobium superconducting RF injector to generate high average current, high brightness electron beam. A 1/2 cell superconducting cavity has been designed, built, and tested. A cryostat has been built to cool the cavity to {approx}2 K. The RF system can deliver up to 500 W at 1.3 GHz to the cavity. A mode-locked Nd:YVO{sub 4} laser, operating at 266 nm with 0.15 W average power, phase locked to the RF, will irradiate a laser cleaned Nb surface… more
Date: May 12, 2004
Creator: SRINIVASAN-RAO,T. BEN-ZVI,I. BURRILL,A. CITVER,G. ET AL.
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Partner: UNT Libraries Government Documents Department
open access

STELLA-II: DEMONSTRATION OF MONOENERGETIC LASER ACCELERATION.

Description: Monoenergetic laser acceleration of trapped microbunches has been demonstrated for the first time. An inverse free electron laser (IFEL) is used to create microbunches, which are then accelerated by a second IFEL using a tapered undulatos. An adjustable magnetic field chicane is located between the two IFELs and is used to control the phase of the microbunches with respect to the laser field in the second IFEL. The IFELs are driven by a single lases beam from a high peak power CO{sub 2} laser. … more
Date: March 24, 2004
Creator: KIMURA,W. D. BABZIEN,M. BEN-ZVI,I. GALLARDO,J. C. KUSCHE,K. P. POGORELSKY,I. V. SKARITKA,J. YAKIMENKO,V. ET AL.
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Partner: UNT Libraries Government Documents Department
open access

HIGH CURRENT SUPERCONDUCTING CAVITIES AT RHIC.

Description: A five-cell high current superconducting cavity for the electron cooling project at RHIC is under fabrication. Higher order modes (HOMs), one of main limiting factors for high current energy-recovery operation, are under investigation. Calculations of HOMs using time-domain methods in Mafia will be discussed and compared to calculations in the frequency domain. Beam breakup thresholds determined from numerical codes for the five-cell cavity will be presented. A possible motivation towards a 2 x… more
Date: July 5, 2004
Creator: CALAGA,R. BEN-ZVI,I. ZHAO,Y. ET AL.
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Partner: UNT Libraries Government Documents Department
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