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in subjects: "Storage Rings Accelerators,Accsys"  
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Effect of the Coupled-bunch Modes on the Longitudinal Feedback System

Description: The Pedersen analysis [1, 2] of the low-level rf feedback system assumes that all bunches oscillate in phase what corresponds to the lowest coupled bunch mode. This analysis is extended here to take into account all other coupled-bunch modes what might be important for the strongly detuned cavities in large storage rings such as PEP-II.
Date: November 30, 2006
Creator: Heifets, S. & Teytelman, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recording PEP2 Ring Beam Losses at SLAC

Description: The PEP2 (e+)(e-) storage rings contain many complex interrelated systems. When the beam aborts, examining a record of the orbit from the time just before the abort can help identify the root cause. At the Stanford Linear Accelerator Center (SLAC) a system has been developed to continuously record beam orbits from Beam Position Monitors (BPMS) into a circular buffer. When the beam is aborted the buffers are frozen and their contents are stored for later analysis. BPM orbits are saved on a turn … more
Date: September 30, 2005
Creator: Zelazny, M.; Gromme, T.; Himel, T.; Hendrickson, L. & Krauter, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Study for ILC Damping Ring at KEKB

Description: ILC damping ring consists of very low emittance electron and positron storage rings. It is necessary for ILC damping ring to study electron cloud effects in such low emittance positron ring. We propose a low emittance operation of KEKB to study the effects.
Date: November 4, 2011
Creator: Flanagan, J. W.; Fukuma, H.; Kanazawa, K. I.; Koiso, H.; Masuzawa, M.; Ohmi, Kazuhito et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Beam Position Monitor System for PEP II

Description: We describe the beam position monitor system built for PEP-II, the B-factory at SLAC. The system reports beam position for bunches of between 5 x 10{sup 8} and 8 x 10{sup 10} electron charges, either singly or as continuous streams of bunches every 4.2 ns. Resolution at full charge is to be better than 10 microns in a single turn. Higher resolution is available via on-board multi-turn averaging. The position signal is processed in a 20 MHz bandwidth around 952 MHz. This bandwidth, rather broade… more
Date: September 12, 2011
Creator: Smith, Stephen R.; Aiello, G.Roberto; Hendrickson, Linda J.; Johnson, Ronald G.; Mills, Mark R. & Olsen, Jeff J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Non Linear Beam Dynamics Studies at SPEAR

Description: The frequency map analysis of a Hamiltonian system recently introduced to accelerators physics in combination with turn-by-turn phase space measurements opens new experimental opportunities for studying non linear dynamic in storage rings. In this paper we report on the experimental program at SPEAR having the goal of measuring the frequency map of the machine. In this paper we discuss the accuracy of the instantaneous tune extraction from experimental data and demonstrate the possibility of th… more
Date: September 12, 2011
Creator: Terebilo, A.; Pellegrini, C.; Cornacchia, M.; Corbett, J. & Martin, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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