Keyword: factory
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MOPO006 DAΦNE Bunch-by-bunch Feedback Upgrade as SuperB Design Test feedback, diagnostics, controls, luminosity 490
 
  • A. Drago
    INFN/LNF, Frascati (Roma), Italy
  • D. Teytelman
    Dimtel, San Jose, USA
 
  DAΦNE, the PHI-factory located in Frascati, has always shown dynamic behavior strongly dependent on the bunch-by-bunch feedback, since its first runs in 1997. Over the years, to keep up with the evolving machine requirements, transverse and longitudinal systems have received multiple upgrades and updates. During fall 2010, all the six DAΦNE feedback systems have been upgraded to support the next run for KLOE as well as to test bunch-by-bunch feedback architectures intended for the future Italian SuperB factory. Both e+/e- longitudinal feedback systems have been completely replaced with new hardware for increased reliability, better diagnostics and improved maintainability. In the effort to reduce residual dipole beam motion, determined by the front-end and quantization noise floor, vertical feedback systems now feature a 12-bit ADC, in place of the older 8-bit design. In the paper, we describe the hardware and software changes of this upgrade. Feedback performance analysis and beam dynamics data collected by the systems are presented.  
 
MOPO025 Experimental Study on New Laser-based Alignment System utilizing a Sequential Three-point Method at the KEKB Injector Linac laser, alignment, linac, focusing 532
 
  • T. Suwada, M. Satoh
    KEK, Ibaraki, Japan
  • K. Minoshima, S. Terada
    AIST, Tsukuba, Japan
 
  A new laser-based alignment system is under development in order to precisely align accelerator components along an ideal straight line at the 600-m-long KEKB injector linac. A well-known sequential three-point method with Fresnel lenses and a CCD camera is revisited in a preliminary design of the new alignment system. The new alignment system is strongly required in order to stably accelerate high-brightness electron and positron beams with high bunch charges and also to keep the beam stability with higher quality towards the Super B-factory at KEK. A new laser optics has been developed and the laser propagation characteristics has been systematically investigated at a 200-m-long straight section at atmospheric pressure. In this report, the preliminary experimental results are reported along with the basic design of the new laser-based alignment system.  
 
MOPS015 40-80 MHz Muon Front-End for the Neutrino Factory Design Study cavity, solenoid, lattice, target 628
 
  • G. Prior, S.S. Gilardoni
    CERN, Geneva, Switzerland
  • A.E. Alexandri
    University of Patras, Rio, Greece
 
  Funding: EU FP7 EUROnu WP3. CERN summer student programme.
To understand better the neutrino properties, machines able to produce an order of 1021 neutrinos per year have to be built. One of the proposed machine is called a neutrino factory. In this scenario, muons produced by the decay of pions coming from the interaction of a proton beam onto a target are accelerated to energies of several GeV and injected in a storage ring where they will decay in neutrinos. The so-called front-end section of the neutrino factory is conceived to reduce the transverse divergence of the muon beam and to adapt its temporal structure to the acceptance of the downstream accelerators to minimize losses. We present a re-evaluation of the muon front-end scenario which used 40-80 MHz radio-frequency cavities capturing one sign at a time in a single-bunch to bucket mode. The standard software environment of the International Study for the Neutrino Factory (IDS-NF) has been used, for comparison of its performance with the IDS-NF baseline front-end design which operates with higher frequency (330-200 MHz) capturing in a train of alternated sign the muons bunches.
 
 
MOPZ006 Main Magnets Design Studies for the Non-scaling Fixed Field Alternating Gradient Accelerator for a Final Acceleration Stage of the Neutrino Factory dipole, quadrupole, focusing, acceleration 829
 
  • J. Pasternak
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • M. Aslaninejad, C. Bonţoiu, J. Pasternak
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
 
  The International Design Study of the Neutrino Factory (IDS-NF) aims to design the next generation facility for the precision neutrino oscillation searches. The non scaling Fixed Field Alternating Gradient Accelerator was prosed for the final muon beam acceleration in order to reduce the cost of the final acceleration. The superconducting magnet design based on the independent multipole coils approach using the ROXIE code is presented. The feasibility of the magnet construction together with the quench limitations are discussed.  
 
MOPZ008 Particle Production Simulations for the Neutrino Factory Target target, proton, shielding, simulation 835
 
  • J.J. Back
    University of Warwick, Coventry, United Kingdom
  • X.P. Ding
    UCLA, Los Angeles, California, USA
  • I. Efthymiopoulos, S.S. Gilardoni, O.M. Hansen, G. Prior
    CERN, Geneva, Switzerland
  • H.G. Kirk, N. Souchlas
    BNL, Upton, Long Island, New York, USA
  • R.J. Weggel
    Particle Beam Lasers, Inc., Northridge, California, USA
 
  Funding: EU FP7 EUROnu WP3
In the International Design Study for the Neutrino Factory (IDS-NF), a proton beam with a kinetic energy between 5 and 15 GeV interacts with a liquid mercury jet target in order to produce pions that will decay to muons, which in turn decay to neutrinos. The target is situated in a solenoidal field tapering from 20 T down to 1.5 T over a length of several metres, allowing for an optimised capture of pions in order to produce a useful muon beam for the machine. We present results of target particle production calculations using MARS, FLUKA and G4BEAMLINE simulation codes.
 
 
MOPZ009 The Muon Linac for the International Design Study for the Neutrino Factory linac, cavity, cryomodule, lattice 838
 
  • A. Kurup, M. Aslaninejad, C. Bonţoiu, J.K. Pozimski
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • K.B. Beard
    Muons, Inc, Batavia, USA
  • S.A. Bogacz, V.S. Morozov
    JLAB, Newport News, Virginia, USA
 
  The first stage of muon acceleration in the Neutrino Factory utilises a superconducting linac to accelerate muons from 244 MeV to 900 MeV. The linac is split into three types of cryomodules with decreasing magnetic fields and increasing amounts of RF voltage but with the design of the superconducting solenoid and RF cavities being the same for all cryomodules. The current status of the muon linac for the International Design Study for the Neutrino Factory will be presented including a final lattice design of the linac; electromagnetic simulations; and a preliminary cost estimate.  
 
MOPZ010 An Accelerator Design Tool for the International Design Study for the Neutrino Factory lattice, simulation, solenoid, HOM 841
 
  • A. Kurup
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • P. Bonnal, B. Daudin, J. De Jonghe, M. Dutour
    CERN, Geneva, Switzerland
 
  A tool has been developed to simplify the accelerator design process from the lattice design, through tracking simulations with engineering features, to costing the facility. The aim of this tool is to facilitate going through the design loop efficiently and thus allow engineering features to be included early on in the design process without hindering the development of the lattice design. The tool uses a spreadsheet to store information about the accelerator and can generate MADX input files, G4beamline input files and interfaces with the costing tool developed by CERN. Having one source for the information simplifies going between lattice simulations, tracking simulations and costing calculations and eliminates the possibility of introducing discrepancies in the design. The application of this tool to cost the Neutrino Factory, which is part of the IDS-NF and EUROnu studies for delivering the Reference Design Report, will be presented.  
 
MOPZ012 The International Design Study for the Neutrino Factory target, proton, cavity, storage-ring 847
 
  • J.K. Pozimski, A. Kurup, K.R. Long
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • J.S. Berg
    BNL, Upton, Long Island, New York, USA
 
  The International Design Study for the Neutrino Factory (the IDS-NF) has recently completed the Interim Design Report* (IDR) for the facility as a step on the way to the Reference Design Report (RDR). The IDR has two functions: it marks the point in the IDS-NF at which the emphasis turns to the engineering studies required to deliver the RDR and it documents the present baseline design for the facility which will provide 1021 muon decays per year from 25 GeV stored muon beams. The facility will serve two neutrino detectors; one situated at source-detector distance of between 3000–5000 km, the second at 7000–8000 km. The conceptual design of the accelerator facility will be described and its performance will be presented. The steps that the IDS-NF collaboration has taken since the IDR was finalized and plans to take to prepare the RDR will also be presented.
* IDS-NF-020: https://www.ids-nf.org/wiki/FrontPage/Documentation?action=AttachFile&do=get&target=IDS-NF-020-v1.0.pdf
Submitted on behalf of the IDS-NF collaboration
 
 
MOPZ013 MAUS: MICE Analysis User Software emittance, simulation, controls, extraction 850
 
  • C.D. Tunnell
    JAI, Oxford, United Kingdom
  • C.T. Rogers
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
 
  The Muon Ionization Cooling Experiment (MICE) is unique because it measures accelerator physics quantities using particle physics methods. It follows that the software that forms the theoretical model of MICE needs to be able to not only propagate beam envelopes and optical parameters but also model detector responses and matter effects for cooling. MICE addresses this dichotomy with the software framework MAUS in order to maximize its physics sensitivity whilst providing the conveniences of, for example, a common data structure. The diversity of challenges that MICE provides from the analysis perspective means that appropriately defining the software scope and layout is critical to the correctness and maintainability of the final accelerator physics analyses. MICE has structured its code into a Map-Reduce framework to enable better parallelization whilst also introducing unit, functional, and integration tests to ensure code reliability and correctness. These methods can apply to other experiments.  
 
MOPZ016 MICE Step I: First Measurement of Emittance with Particle Physics Detectors* emittance, simulation, quadrupole, collider 853
 
  • L. Coney
    UCR, Riverside, California, USA
  • M. Popovic
    Fermilab, Batavia, USA
  • M.A. Rayner
    DPNC, Genève, Switzerland
 
  The muon ionization cooling experiment (MICE) is a strategic R&D project intending to demonstrate the only practical solution to prepare high brilliance beams necessary for a neutrino factory or muon colliders. MICE is under development at the Rutherford Appleton Laboratory (UK). It comprises a dedicated beam line to generate a range of input emittance and momentum, with time-of-flight and Cherenkov detectors to ensure a pure muon beam. The emittance of the incoming beam is measured in the upstream magnetic spectrometer with a sci-fiber tracker. A cooling cell will then follow, alternating energy loss in Li-H absorbers and RF acceleration. A second spectrometer identical to the first and a second muon identification system measure the outgoing emittance. In the 2010 run the beam and most detectors have been fully commissioned and a first measurement of the emittance of a beam with particle physics (time-of-flight) detectors has been performed. The analysis of these data should be completed by the time of the Conference. The next steps of more precise measurements, of emittance and emittance reduction (cooling), that will follow in 2011 and later, will also be outlined.
Abstract is submitted by the MICE Speakers Bureau.
If accepted, most likely Dr. Kaplan will present it.
As a first result in a novel sector, we propose it for an oral presentation
 
 
MOPZ036 Ionization Cooling in MICE Step IV emittance, scattering, simulation, solenoid 877
 
  • T. Carlisle, J.H. Cobb
    JAI, Oxford, United Kingdom
  • R.R.M. Fletcher
    UCR, Riverside, California, USA
 
  The international Muon Ionization Cooling Experiment (MICE), under construction at RAL, will test and characterize a prototype cooling channel for a future Neutrino Factory or Muon Collider. The cooling channel aims to achieve, using liquid hydrogen absorbers, a 10% reduction in transverse emittance. The change in 4D emittance will be determined with a relative accuracy of 1% by measuring muons individually. These include two scintillating fibre trackers embedded within 4 T solenoid fields, TOF counters and a muon ranger. Step IV of MICE will begin in 2012, producing the experiment's first precise emittance-reduction measurements. Multiple scattering in candidate Step IV absorber materials was studied in G4MICE, based on GEANT4. Equilibrium emittances for low-Z materials from hydrogen to aluminium can be studied experimentally in Step IV of MICE, and compared with simulations.  
 
TUOAA01 The EUROnu Project: A High Intensity Neutrino Oscillation Facility in Europe target, proton, linac, acceleration 894
 
  • T.R. Edgecock
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • E.H.M. Wildner
    CERN, Geneva, Switzerland
 
  EUROnu is a European Commission funded FP7 Design Study investigating three possible options for a future high intensity neutrino oscillation facility in Europe. These options are a CERN to Frejus Super-Beam, a Neutrino Factory and a Beta Beam. The aims of the project are to undertake the crucial R&D on each of the accelerator facilities and determine their performance and relative cost, including the baseline detectors for each facility. A comparison will then be made and the results reported to the CERN Council as part of the CERN Strategy Review.  
slides icon Slides TUOAA01 [7.638 MB]  
 
TUPC148 Measuring Emittance with the MICE Scintillating Fibre Trackers emittance, photon, simulation, alignment 1374
 
  • D. Adey
    University of Warwick, Coventry, United Kingdom
 
  The Muon Ionization Cooling Experiment (MICE) aims to measure a 10% reduction in a muon beam emittance to within 0.1%. To achieve this two scintillating fibre trackers will be placed within a 4T solenoidal field. The trackers utilize fibres with a diameter of 350 microns to provide a position resolution of less than 0.5 mm. Details of the tracker hardware, electronics and its calibration and reconstruction methods will be presented, along with the measured performance under cosmic ray tests and the simulated performance in MICE.  
 
TUPS053 A Target Magnet System for a Muon Collider and Neutrino Factory shielding, target, radiation, collider 1650
 
  • H.G. Kirk
    BNL, Upton, Long Island, New York, USA
  • V.B. Graves
    ORNL, Oak Ridge, Tennessee, USA
  • K.T. McDonald
    PU, Princeton, New Jersey, USA
  • N. Souchlas, R.J. Weggel
    Particle Beam Lasers, Inc., Northridge, California, USA
 
  Funding: This work is supported in part by the US DOE Contract NO. DE-AC02-98CH10886.
The target system envisioned for a Muon Collider or Neutrino Factory includes a 20-T solenoid field surrounding a mercury jet target with the field tapering to 1.5 T 15 m downstream of the target. A principal challenge is to shield the superconducting magnets from the radiation issuing from the 4-MW proton beam impacting the target. We describe a solution which will deliver the desired field while being capable of tolerating the intense radiation environment surrounding the target.
 
 
TUPS054 Beam-power Deposition in a 4-MW Target Station for a Muon Collider or a Neutrino Factory target, proton, solenoid, simulation 1653
 
  • H.G. Kirk
    BNL, Upton, Long Island, New York, USA
  • J.J. Back
    University of Warwick, Coventry, United Kingdom
  • X.P. Ding
    UCLA, Los Angeles, California, USA
  • V.B. Graves
    ORNL, Oak Ridge, Tennessee, USA
  • K.T. McDonald
    PU, Princeton, New Jersey, USA
  • N. Souchlas, R.J. Weggel
    Particle Beam Lasers, Inc., Northridge, California, USA
 
  Funding: This work is supported in part by the US DOE Contract NO. DE-AC02-98CH10886.
We present the results of power deposition in various components of the baseline target station of a Muon Collider or a Neutrino Factory driven by a 4-MW proton beam.
 
 
WEZA02 Colliders for B Factories quadrupole, luminosity, emittance, sextupole 1931
 
  • H. Koiso
    KEK, Ibaraki, Japan
 
  Two new B factories, SuperB in Frascati and SuperKEKB in Tsukuba, aim at unprecedented luminosities close to 1036/cm2/s. The designs, status, challenges, and differences between the two machines are reported. Emphasis should be put on recent developments for the B factories. The presentation should include a realistic outlook.  
slides icon Slides WEZA02 [6.796 MB]  
 
WEPS016 Update on Comparison of the Particle Production using MARS Simulation Code target, proton, simulation, solenoid 2514
 
  • G. Prior, S.S. Gilardoni
    CERN, Geneva, Switzerland
  • X.P. Ding
    UCLA, Los Angeles, California, USA
  • H.G. Kirk, N. Souchlas
    BNL, Upton, Long Island, New York, USA
 
  Funding: EU FP7 EUROnu WP3
In the International Design Study for the Neutrino Factory (IDS-NF), a 5-15 GeV (kinetic energy) proton beam impinges a Hg jet target in order to produce pions that will decay into muons. The muons are then captured and transformed into a beam that can be passed to the downstream acceleration system. The target sits in a solenoid field tapering from 20 T down to below 2 T over several meters permitting a optimized capture of the pions that will produce useful muons for the machine. The target and pion capture system have been simulated in MARS simulation code and this work presents an updated comparison of the particles production using the MARS code versions m1507 and m1510.
 
 
THPPA02 EPS-AG Budker Prize Presentation: Retrospective of 24 years of RIBF Life cyclotron, ion, electron, scattering 2899
 
  • Y. Yano
    RIKEN Nishina Center, Wako, Japan
 
  The speaker will look back on 24 years (from 1987 to now) devoted to the RIBF project.  
slides icon Slides THPPA02 [10.303 MB]  
 
THPC159 Factory Acceptance Test of COLDDIAG: A Cold Vacuum Chamber for Diagnostics vacuum, electron, diagnostics, synchrotron 3263
 
  • S. Gerstl, T. Baumbach, S. Casalbuoni, A.W. Grau, M. Hagelstein, T. Holubek, D. Saez de Jauregui
    Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
  • V. Baglin
    CERN, Geneva, Switzerland
  • C. Boffo, G. Sikler
    BNG, Würzburg, Germany
  • T.W. Bradshaw
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • R. Cimino, M. Commisso, A. Mostacci, B. Spataro
    INFN/LNF, Frascati (Roma), Italy
  • J.A. Clarke, R.M. Jones, D.J. Scott
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • M.P. Cox, J.C. Schouten
    Diamond, Oxfordshire, United Kingdom
  • I.R.R. Shinton
    UMAN, Manchester, United Kingdom
  • E.J. Wallén
    MAX-lab, Lund, Sweden
  • R. Weigel
    Max-Planck Institute for Metal Research, Stuttgart, Germany
 
  Superconductive insertion devices (IDs) have higher fields for a given gap and period length compared with the state-of-the-art technology of permanent magnet IDs. One of the still open issues for the development of superconductive insertion devices is the understanding of the heat intake from the electron beam. With the aim of measuring the beam heat load to a cold bore and the hope to gain a deeper understanding in the underlying mechanisms, a cold vacuum chamber for diagnostics was built. It is equipped with the following instrumentation: retarding field analyzers to measure the electron flux, temperature sensors to measure the beam heat load, pressure gauges, and mass spectrometers to measure the gas content. The flexibility of the engineering design will allow the installation of the cryostat in different synchrotron light sources. The installation in the storage ring of the Diamond Light Source is foreseen in November 2011. Here we report about the technical design of this device, the factory acceptance test and the planned measurements with electron beam.  
 
THPC163 Local and Integral Field Measurement Setup for 2m Long Superconducting Undulator Coils undulator, synchrotron, insertion, insertion-device 3275
 
  • A.W. Grau, T. Baumbach, S. Casalbuoni, S. Gerstl, M. Hagelstein, T. Holubek, D. Saez de Jauregui
    Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
 
  The performance of superconducting insertion devices depends strongly on their magnetic field quality. It is of fundamental importance to characterize the magnetic properties of insertion devices accurately before installation in synchrotron light sources. Thus a main part of the R&D program for superconducting insertion devices at the Karlsruhe Institute of Technology focuses on quality assessment. This contribution describes the instrumentation to perform magnetic measurements of the local field, of the field integrals and of the multipole components of superconducting undulator coils in a cold in vacuum (cryogen free) environment. It focuses on the outcome of the factory acceptance test together with results of first field measurements performed with mock-up coils.  
 
THPS008 Bucked Coils Lattice for the Neutrino Factory lattice, cavity, emittance, betatron 3439
 
  • A. Alekou, J. Pasternak
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • C.T. Rogers
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
 
  In the Neutrino Factory muon front end, ionization cooling is used to reduce the very large initial transverse muon beam emittance. The current baseline cooling channel, FSIIA, performs well in simulations with respect to the transmission and cooling. However, recent studies indicate the RF voltage may be limited when external magnetic field is applied and therefore, as the FSIIA lattice has a large magnetic field at the position of the RF cavities, the feasibility of FSIIA may be questioned. Bucked Coils lattice, a new cooling lattice that uses different radius and opposite polarity coils placed at the same position along the beam-axis, aims to achieve low magnetic field at the position of the RF cavities while obtaining comparable transmission to FSIIA. The detailed comparison between FSIIA and different versions of the Bucked Coils configuration with respect to the magnetic field, beam dynamics and transmission are presented in this paper.  
 
THPZ008 Strong-strong Simulations for Super B Factories II simulation, luminosity, resonance, positron 3696
 
  • K. Ohmi
    KEK, Ibaraki, Japan
 
  Trials for the strong-strong simulation for study of beam-beam effect in large Piwinski angle (LPA) collision adopted in Super B factories. So far a combination method of particle in cell method and soft-Gaussian model has been used. We now show complete strong-strong simulation for LPA collision scheme. Collisions between many slices of two bunches are evaluated by particle in cell method with shifted Green function.  
 
THPZ022 Operation Scheme and Statistics of KEKB luminosity, injection, cavity, sextupole 3735
 
  • M. Tanaka
    MELCO SC, Tsukuba, Japan
  • Y. Funakoshi
    KEK, Ibaraki, Japan
 
  The KEKB B-Factory(KEKB) started a collision experiment in 1999 and finished in June, 2010. The total operation time of KEKB from fiscal year 2000 was 55657 hours. The breakdowns of operation are physics run 73.8%, machine study 6.8%, machine tuning 4.8%, beam tuning 5.9%, trouble 5.3%, maintenance 2.1% and other 1.3%. The total integrated luminosity was 1041 fb-1 and the maximum peak luminosity was 21.083 nb-1s−1. To increase the peak and integrated luminosity, the continuous injection scheme, the crab cavities and the skew sextupole magnets were effective. We finished over ten year operation of KEKB in June, 2010.