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| TUC2MA02 | Design of the Transfer Lin·10-2 for the CTF-3 at CERN | quadrupole, dipole, sextupole, controls | 71 | ||||
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The design of the Transfer Lin·10-2 (TL-2), which will transfer an electron beam from the Combiner Ring (CR) to CLEX area (CLIC experimental area) of CTF-3 at CERN, is presented in this paper. This line will be used to control the bunch length and Twiss parameters at the entrance to the CLEX area. The line will have a wide tunability of R56 parameter, ranging from –0.35 to +0.35m. This has been designed considering the constraints imposed by the building geometry and the magnetic elements to be used. The design optimization of the line has been done up to second order for the entire R56 range, keeping T566 practically zero and emittance dilution below 10%.
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| TUC3MA01 | ILC DR Alternative Lattice Design | damping, dynamic-aperture, wiggler, emittance | 94 | ||||
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The International Linear Collider (ILC) which is based on super-conducting RF acceleration technology requires the damping rings to provide beams with extremely small equilibrium emittances, and large acceptance to ensure good injection efficiency for high emittance, high energy spread beam from the positron source. In order to reduce the cost for ILC damping rings, an alternative lattice which is different from the baseline configuration design has been designed with modified FODO arc cells，and the total quadrupole number has been reduced by half. At the same time, to decrease the total cost involved in constructing access shafts needed to supply power, cryogenics etc. for the wigglers and other systems, the number of wiggler sections is decreased from 8 to 4, and further to 2. This new lattice has been optimised to have a good dynamic aperture. This alternative ILC damping ring lattice design will reduce the cost largely compared with the baseline design.
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| TUC3H101 | Optimization Of The BEPCII Lattice With Frequency Map Analysis | resonance, injection, sextupole, radiation | 100 | ||||
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It is the first time of systemically applying the frequency map analysis (FMA) onto the lattice of BEPCII, which is an e±e? collider. We compute various parameters of the lattice with AT which the FMA code is imbedded in, and compared with that of MAD and SAD codes. The BEPCII colliding and injecting mode lattice are analyzed and optimized with FMA while turning the RF cavity and radiation on. Both on- and off-momentum frequency maps are overviewed. The transverse-longitudinal coupling resonance is found to be able to have large effects on the beam dynamics.
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| TUPMA006 | Study on the BEPCII Lattice | luminosity, dynamic-aperture, injection, synchrotron | 109 | ||||
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BEPCII, the upgrading project of the Beijing Electron-Positron Collider (BEPC), has been designed with a luminosity of 1033 cm-2s-1 at the -charm energy region. According to the beam-beam simulation results, the luminosity of BEPCII with a crossing collision angle of 11 mrad is about 0.50×1033 cm-2s-1 with the original operation mode at the working point of 6.53/5.58. To increase the operating luminosity of the BEPCII, a low momentum compaction factor (?P) collision mode has been studied which can increase the luminosity to 0.54×1033 cm-2s-1. If the bunch length of the low ?P mode is reduced from 1.5 cm to 1.2 cm, a mode with vertical beta function at IP equal to 1.2 cm could push the luminosity to 0.828×1033 cm-2s-1 at the working points 6.53/5.56. Also, the BEPCII synchrotron radiation mode is optimized to get a larger dynamic aperture and much more stable tunes.
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| TUPMA023 | Project of 2 GeV Synchroton Light Source for the Republic of Kazakhstan | synchrotron, emittance, radiation, dipole | 136 | ||||
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Applications of synchrotron radiation (SR) are very popular for last time in many research fields. Thus a developing of compact source for generation of hard X-ray synchrotron radiation is very actual task. The goal of this work is a developing project of SR source for Republic of Kazakhstan. This storage ring mainly dedicated for performing the high sensitive X-ray fluorescence analysis of different natural samples to be used for ore exploration, ore processing and metallurgy . But implementations of other popular techniques applied for research and education with using synchrotron radiation (XAFS, XRD, etc) are also possible. This report includes a detailed description of main parameters and magnetic structure of designed storage ring as well as preliminary design of injector system.
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| TUPMA058 | Insertion Devices for SESAME | photon, undulator, wiggler, brilliance | 193 | ||||
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SESAME is a 3rd generation synchrotron light source that is optimized for the use of Insertion Devices. In this note, the magnetic design for a Hybrid Multipole Wiggler (HMW) and an Elliptically Polarizing Undulator (EPU), proposed for the Phase-I beamlines of SESAME will be presented. Both devices fulfill the electron beam stay clear requirements defined by the SESAME lattice leading to a decent vacuum lifetime. The HMW will provide photon energies from 3-25 keV, which are defined by the scientific case of the SESAME storage ring. The HMW is a hybrid device with period length of 160 mm, a minimum gap of 14.5 mm, maximum flux density of 2.10 Tesla and total magnetic length of 3.04 m. A maximum photon flux density of 1.80×1015 photons/sec/0.1%BW is obtained. The EPU device is required to provide the SESAME users with a variable polarized light and high photon flux over the energy range of 100-1500 eV. The proposed design is of Apple-II type with a period length of 60 mm, a minimum gap of 13 mm and a total magnetic length of 1.782 m. Only the helical mode of operation has been considered where horizontal, vertical and elliptical polarized light can be obtained.
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| TUPMA059 | Beam Dynamics Effects with Insertion Devices for the Proposed 3 GeV Ring in Taiwan | emittance, synchrotron, dipole, synchrotron-radiation | 196 | ||||
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The effects of insertion devices on beam dynamics of storage rings were studied. We will focus on the changes of the emittance and energy spread in the presence of insertion devices. Formulas for the beam emittance and the energy spread with insertion devices are also derived, in which an intrinsic parameter depending on the design of the lattice is introduced in the calculations. Simulation results and comparisons of achromatic and non-achromatic cases in the proposed 3 GeV synchrotron radiation light source in Taiwan are shown.
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| WEPMA010 | 8 GeV Beam Line Optics Optimization for the Rapid Antiproton Transfers at Fermilab | antiproton, optics, proton, controls | 345 | ||||
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Tevatron Run-II upgrade requires a significant increase of the efficiency and speed of the antiproton transfers from the Accumulator to the Recycler. This goal represents a great challenge as the time between stopping and initiating the stacking regime should change from 1 hour down to a few minutes. Here we discuss the beam line optics aspects of this project. Results of lattice measurements and optimization are analyzed in terms of transport efficiency and stability.
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| WEPMA059 | Commissioning of the Australian Synchrotron with Libera EBPPs and Matlab | synchrotron, controls, quadrupole, storage-ring | 404 | ||||
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The Australian Synchrotron (AS) is equipped with a full compliment of 98 BPMs attached to Libera Electron Beam Position Processors (EBPPs) that are capable of measuring turn-by-turn/first turn and averaged beam positions simultaneously. The BPM system coupled with Matlab applications has simplified the process of commissioning. This report will highlight how the various tools have been utilised and show the results of some studies.
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| THC3MA03 | NSLS-II Design: A Novel Approach to Light Source Design | emittance, damping, dipole, wiggler | 613 | ||||
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The NSLS-II storage ring will be a replacement for the existing NSLS light source rings, which although innovative when proposed was rapidly overtaken by storage ring design capabilities. NSLS-II design[1] takes a new approach toward providing users with the brightest beams after commissioning and a strategy of evolving to higher brightness beams as more ID devices are installed during its operating period. This is achieved not by pushing the basic lattice to lower emittance, an approach that hits severe limits in the control of the dynamic aperture of an ever increasing non-linear lattice. Our approach is rather to provide the additional emittance reduction naturally with the installation of additional user undulator's or adding high power damping wigglers. Some of the damping wigglers will have variable gap and can be used to maintain a given emittance as the additional user undulators are installed. The details on the lattice design for the high brightness beams and the control of stability of these high power beams is presented.
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*ozaki@bnl.gov |
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