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in creator/contributor: "Ben-Zvi, I."

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

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.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

STELLA-II: DEMONSTRATION OF MONOENERGETIC LASER ACCELERATION.

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.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

HIGH CURRENT SUPERCONDUCTING CAVITIES AT RHIC.

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.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Superconducting Photoinjector

One of the frontiers in FEL science is that of high power. In order to reach power in the megawatt range, one requires a current of the order of one ampere with a reasonably good emittance. The superconducting laser-photocathode RF gun with a high quantum efficiency photocathode is the most natural candidate to provide this performance. The development of a 1/2 cell superconducting photoinjector designed to operate at up to a current of 0.5 amperes and beam energy of 2 MeV and its photocathode … more

Date: August 26, 2007

Creator: Ben-Zvi,I.; Burrill, A.; Calaga, R.; Chang, X.; Grover, R.; Gupta, R. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Status of high current R&D Energy Recovery LINAC at Brookhaven National Laboratory

An ampere class 20 MeV superconducting Energy Recovery Linac (ERL) is under construction at Brookhaven National Laboratory (BNL) for testing of concepts relevant for high-energy coherent electron cooling and electron-ion colliders. One of the goals is to demonstrate an electron beam with high charge per bunch ({approx} 5 nC) and low normalized emittance ({approx} 5 mm-mrad) at an energy of 20 MeV. Flexible lattice of ERL loop provides a test-bed for investigating issues of transverse and longit… more

Date: March 28, 2011

Creator: Kayran, D.; Altinbas, Z.; Beavis, D; Ben-Zvi, I.; Calaga, R.; Gassner, D. M. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

First Demonstration of Staged Laser Acceleration.

Two independently-driven laser accelerators were operated together in series for the first time in a proof-of-principle experiment to demonstrate staging. The ability to stage together these devices is important for eventually building practical laser-driven accelerators. The laser accelerators consisted of two identical inverse free electron lasers (IFEL), where the first IFEL served as a prebuncher, which created {approx}3-fs long microbunches that were accelerated by the second IFEL. Precise… more

Date: June 18, 2001

Creator: Kimura, W. D.; Campbell, L. P.; Dilley, C. E.; Gottschalk, S. C.; Quimby, D. C.; Babzien, M. Ben-Zvi, I. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department