RHIC BPM System Modifications and Performance

Satogata, T.; Calaga, R.; Cameron, P.; Cerniglia, P.; Cupolo, J.; Curcio, Anthony; Dawson, William C.; Degen, C.; Gullotta, J.; Mead, J.; Michnoff, R.; Russo, T.; Sikora, R.

doi:10.1109/pac.2005.1590995

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…The RHIC BPM system [7], [8] consists in 160 23-cm cryogenic striplines per plane per ring. Most of the devices are made of by two opposite striplines oriented vertically or horizontally accordingly to the higher beta function.…”

Section: Localized Impedance Measurementsmentioning

confidence: 99%

Transverse impedance measurement in RHIC and the AGS

Biancacci

Blaskiewicz

Dutheil

et al. 2014

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The RHIC luminosity upgrade program aims for an increase of the polarized proton luminosity by a factor 2. To achieve this goal a significant increase in the beam intensity is foreseen. The beam coupling impedance could therefore represent a source of detrimental effects for beam quality and stability at high bunch intensities. For this reason it is essential to quantify the accelerator impedance budget and the major impedance sources, and possibly cure them. In this MD note we summarize the results of the 2013 transverse impedance measurements in the AGS and RHIC. The studies have been performed measuring the tune shift as a function of bunch intensity and deriving the total accelerator machine transverse impedance. For RHIC, we could obtain first promising results of impedance localization measurements as well.

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Section: Localized Impedance Measurementsmentioning

confidence: 99%

Transverse impedance measurement in RHIC and the AGS

Biancacci

Blaskiewicz

Dutheil

et al. 2014

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“…Operational experience at RHIC has also demonstrated that BPM readings can have large digital offsets, and these offsets can vary over time due to issues with aging gain and calibration relays [5]. BPMs in the 6-and 8-o'clock low-β IRs were modified to remove these relays during the 2004 shutdown period.…”

Section: Introductionmentioning

confidence: 99%

Quadrupole Beam-Based Alignment at RHIC

Niedziela

Montag²,

Satogata³

Proceedings of the 2005 Particle Accelerator Conference

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Successful implementation of a beam-based alignment algorithm, tailored to different types of quadrupoles at RHIC, provides significant benefits to machine operations for heavy ions and polarized protons. This algorithm was used to calibrate beam position monitor centers relative to interaction region quadrupoles to maximize aperture. This approach was also used to determine the optimal orbit through transition jump quadrupoles to minimize orbit changes during the transition jump for heavy ion acceleration. This paper provides background discussion and results from first measurements during the RHIC 2005 run.

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