The high-power s-band feed subsystem for the Advanced Photon Source injector test stand

Grelick, A.; Berg, S.; Goeppner, G.; Lewellen, John W.; Milton, S. V.; Nassiri, A.; Pile, G.; Smith, Terry L.

doi:10.1109/pac.2001.986691

Cited by 5 publications

(2 citation statements)

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“…The rf control system for the ITS [4] is, by necessity, different from that of the linac. Instead of individual klystrons for each linac sector, the ITS uses two variable power dividers, two phase shifters, and three circulators to provide isolated rf power feeds to three separate ports.…”

Section: Control Systemsmentioning

confidence: 99%

An operator training facility at the advanced photon source

Lewellen

Pasky

Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440)

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The Advanced Photon Source (APS), a premier thirdgeneration synchrotron radiation source, presently operates in top-up mode during most user run time. During top-up mode, charge is injected into the storage ring at approximately 2-minute intervals to stabilize the stored beam current to within 0.1%. Top-up mode requires the dedicated use of the entire APS injector system, severely limiting time available for operator training.The APS injector test stand (ITS) is presently configured to operate a ballistic bunch compression (BBC) rf gun, which uses three independently powered and phased rf cavities, and either a thermionic cathode or a photocathode. Operation of the BBC gun requires cavity phasing and input rf power selection analogous to the operation of a high-energy linac. In conjunction with the ITS beamline components (quadrupoles, dipoles, diagnostics, correctors), this provides an effective analog to the APS linac. Operators can therefore practice accelerator tuning and control methods with a live beam and real components, rather than simulations, while top-up operation is ongoing.

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Section: Control Systemsmentioning

confidence: 99%

An operator training facility at the advanced photon source

Lewellen

Pasky

Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440)

View full text Add to dashboard Cite

show abstract

“…To satisfy such tight criteria, both low-level and high-power RF systems are under evaluation together with development of a precision on-line phase detector system [4]. Earlier RF phase control implementation in APS RF linac [5][6], together with FEL component systems underpins nice environments for later successful APS SASE-FEL experiments [7] for the requirement of the phase stability for the APS SASE-FEL (LEUTL [8]) is less than 2 0 .…”

Section: Introductionmentioning

confidence: 99%