A. Barcikowski

Installation and On-Line Commissioning of EBIS at ATLAS

P. N. Ostroumov, A. Barcikowski, J. B. Clark, Clayton Dickerson et autres

An Electron Beam Ion Source Charge Breeder (EBIS-CB) has been developed at Argonne to breed radioactive beams from the CAlifornium Rare Ion Breeder Upgrade (CARIBU) facility at ATLAS. The CARIBU EBIS-CB has been successfully commissioned offline with an external singly-charged cesium ion …

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The ATLAS Intensity Upgrade: Project Overview and Online Operating Experience

R. C. Pardo, A. Barcikowski, Zachary Conway, Clayton Dickerson et autres

ATLAS, the world's first accelerator to use RF superconductivity for ion acceleration, has undergone a major facility upgrade with the goals of significantly increased stable-beam current for experiments and improved transmission for all beams. The dominant components of the upgrade are a) …

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High power test of a 57-MHz CW RFQ.

P. N. Ostroumov, A. Barcikowski, B.E. Clifft, B. Rusthoven et autres

High power heavy-ion drivers require a CW low-frequency RFQ for initial acceleration. The low frequency specifications required for heavy-ion acceleration typically result in large dimensions of the structure. By appropriate choice of the resonant structure for the Rare Isotope Accelerator (RIA) driver …

Mechanical design of a flexible bunch compressor for APS linac

E. Rotela, Sanjeev Sharma, A. Barcikowski, J. Biggs

A bunch compressor has been installed in the APS linac to produce high peak currents for the FEL project and to explore the effects of coherent synchrotron radiation (CSR). The bunch compressor design is based on an asymmetric four-dipole chicane configuration in …

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SYNCHROTRON RADIATION ABSORBERS FOR HADRON COLLIDERS

P. Bauer, K. Ewald, C. Darve, T.H. Nicol et autres

We present the results of a design study of synchrotron radiation absorbers, or photon stops, conducted in the context of a recent study of a Very Large Hadron Collider (VLHC), [1]. Photon stops protrude into the beam tube at the end of …

AN e+e- COLLIDER IN THE VLHC TUNNEL

A. Barcikowski, G. Goeppner, J. Norem, E. Rotela et autres

We describe the design of an e + e - collider that could be installed in the tunnels of the VLHC to run before that machine. We consider the arguments required to maximize the luminosity and indicate what effects would limit the …

A High-Precision Cryogenically-Cooled Crystal Monochromator for the APS Diagnostics Beamline

E. Rotela, B. X. Yang, Sanjeev Sharma, A. Barcikowski

A high-precision cryogenically-cooled crystal monochromator has been developed for the APS diagnostics beamline. The design permits simultaneous measurements of the particle beam size and divergence. It provides for a large rotation angle, {minus}15{degree} to 180{degree}, with a resolution of 0.0005{degree}. The roll …

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High heat-load absorbers for the APS storage ring

Sanjeev Sharma, E. Rotela, A. Barcikowski

The power density of the dipole x-rays in the 7-GeV APS storage ring is 261 watts/mrad at 300 mA of beam current. An array of absorbers is used in the ring to shield its vacuum chambers and diagnostics components in the path …

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