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Status report on the radio frequency accelerating system of the APS (Advanced Photon Source) at Argonne

Description: Argonne National Laboratory is designing a 7-GeV Advanced Photon Source (APS). The rf systems of the APS include 10-MHz and 120-MHz systems for the Positron Accumulator Ring (PAR), a multicell 352-MHz system for the booster synchrotron, and a system of mode-damped, single-cell 352-MHz cavities for the storage ring. The paper will describe the design of the PAR cavities, the configuration of the booster system, test results of the junction circulator developed for the cavities, and results of th… more
Date: January 1, 1989
Creator: Nicholls, G.; Bridges, J.; Cook, J. & Kustom, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analysis of rf modes in the ANL APS vacuum chamber using computer simulation, electron beam excitation, and perturbation techniques

Description: The APS vacuum consists of a nearly elliptical beam chamber coupled to an antechamber through a 1-cm-high, 10-cm-long pumping slot over most of the 1104 m of storage ring circumference. Nonevaporable getter (NeG) strips in the antechamber are the pumping element. The 1-cm-high slot has two functions: to provide good conductance for vacuum pumping and for transmission of the photons into the beam ports. We thought that coupling of the beam to the antechamber might occur through the slot. Since t… more
Date: January 1, 1989
Creator: Kustom, R.; Bridges, J.; Chou, W.; Cook, J.; Mavrogenes, G. & Nicholls, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The rf system of the Synchrotron X-ray Source at Argonne

Description: A Positron Storage Ring for the Synchrotron X-ray Source at Argonne is under design. The rf system is described. The rf system is divided into four stations, each using a one-megawatt klystron to excite four single-cell spherical cavities to a gap voltage of 761 kV at the operating frequency of 350.8 MHz. The same klystron also provides the beam power for synchrotron radiation losses of the position beam of up to 300 mA, the higher-order-mode power losses, the power losses in the beam due to th… more
Date: January 1, 1987
Creator: Kustom, R.L.; Mavrogenes, G. & Nicholls, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Computations predicting RF cavity characteristics

Description: The APS storage ring cavity is a single cell semi-spherical structure patterned along the lines of the KEK Photon Factory and the Daresbury cavities. The cavity was initially scaled to the APS frequency of 352.9 MHz using the computer code URMEL. Before construction of the prototype, it was considered essential to simulate the cavity as it would be measured in the machine shop as it was being built. The cavity has four large ports on the equator which would lower the frequency, but by how much?… more
Date: September 1, 1988
Creator: Jin, Y. & Nicholls, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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