emma 24 th february 2009 alice stakeholder meeting

EMMA

24th February 2009

ALICE Stakeholder Meeting

ALICE Stakeholder meeting - Feb 2009

IOTRacksEMMA Layout


EMMA Infrastructure upgrade in progress in ALICE Accelerator Hall


Injection Line Assembly in progress in S Block


IntegrationIOT RackALICEDiagnosticsBeamlineRF Distribution


Aims & Objectives of EMMA ProjectWorlds first NS-FFAG (non-scaling Fixed Field Alternating Gradient) acceleratorFFAG: Field fixed in time but varies across pipe

Nonscaling: Dipole field scales with momentum but focussing quadrupole fields do not Optics changes during accelerationBetatron Tune changes during accelerationResonances unavoidableBut rapid acceleration means this is not fatal. (We hope)


CONFORMCONFORM ( COnstruction of a Nonscaling FFag for Oncology, Research, and Medicine ) www.conform.ac.uk/ Total funds 6.9m over 4 year project lifecycle from RCUK Basic Technology from 1st April 2007Led by University of Manchester and The Cockcroft Institute including RAL, JAI, and others. Also FNAL, Brookhaven, Grenoble EMMA design and construction PAMELA design study for hadron therap machine Applications study for other applicationsBASROC (British Accelerator Science and Radiation Oncology Consortium) umbrella group of academic, medical and industry specialists in accelerator and medical technology with the aim of promoting the use of accelerators in science, industry and medicine. www.basroc.org.uk/


EMMA Basic Parameters

Energy range10 20 MeVLatticeF/D DoubletCircumference16.6 mNo of cells42Normalised transverse acceptance3 mm-mradFrequency (nominal)1.3 GHzNo of RF cavities19Average beam current13 A Repetition rate1, 5, 10, 20 HzBunch charge16-32 pC single bunch


RequirementsFull aperture injection and extraction at all energies 10 20 MeV

Many lattice re-tunings (vary ratio of dipole to quadrupole fields)

Vary frequency, amplitude and phase of RF cavities

Non-accelerated operation to map closed orbits and tunes vs momentum

Map longitudinal and transverse acceptances with probe beam

To be heavily instrumented with beam diagnostics, etc.


Ring MagnetsRequirements / SolutionAdjust dipole & quadrupole components independently - Mount magnets on independent radial linear slidesFields identical in every cell despite kickers and septum - Field clamps at cell entrance face of QD & exit face of QF. Adjusted at the factory Very large good field region for range of closed orbits - Optimised pole profile implemented Due to extreme compactness of lattice, D & F magnets Are in very close proximity. Consequence: field computation and measurement with both magnets in place has been essential. Results from the prototype measurements have been implemented in the lattice simulations Are short compared with aperture. Consequence: integrated strength is dominated by end-field contributionsAll magnets scheduled to be delivered from TESLA by 10th April 2009


RF Cavities20 (19 + spare) production cavity construction in progress give fast acceleration 4 of 5 batches delivered to DL 5th batch scans awaiting approval by DL


Injection/Extraction Septum DesignIn house design of septum and vacuum chamber in progressWire eroding of lamination stacks is in progress. Delivery scheduled for Feb Mar 2009Manufacture Misc. septum components Apr May 2009Magnet measurements scheduled for Jun 2009Plan view of septum in vacuum chamberSection view of septum in vacuum chamberISO view of septum with vacuum chamber removed


Kicker Magnet DesignFerrite CDM5005C core(Ceramic Magnetics, New Jersey)100 mmKicker component manufacture by Brite Precision, NewburyFerrite blocks manufactured by Ceramic Magnetics, New JerseyPrototype kicker magnet complete. Four production devices to follow subject to successful testingDelivery to APP in early March to be used as the test load for the kicker power supplies


Standard Ring Vacuum ChamberBPM BlockContract placed for BPM pickups with Testbourne. Delivered November 2008Contract placed with VG Scienta for the vacuum chambers. Manufacture in progress Batch Delivery March 2009Clean vacuum testing & RGA cleanliness tests at the factory before delivery to DaresburyParticle processing at Daresbury


RF DistributionContact placed with Q-Par Angus in Oct. 2008Manufacture and testing in progressDelivery due end of March 2009


RF SourceInductive Output TubeVIL409 90 kW Transmitter Contact placed with CPI in Sep. 2008Full testing at CPI before deliveryDelivery due end of March 2009Commissioning at Daresbury in late April early May


INJECTION LINE ALICE to EMMANew Dipoles x 2 (33) & BPMs at dipole entrancePosition measurementNew Dipole 30& BPMs at dipole entrancePosition measurementBPMPositionmeasurement Wall Current Monitor New Quadrupoles x 13Ion PumpVacuum valveTomography SectionScreens x 3(emittance measurement)SRS Quadrupoles x 3Screen &Vert. SlitBeam DirectionSRS Quadrupoles x 2ScreenVacuum valveScreenEmittance measurementCombined H and V Steering Magnet x 4 EMMARingALICEMatch the probe beam to the requirements of EMMAMeasure the properties of the probe beamVertical Steering Magnet x 2 Beam DumpNew Dipole 30


DIAGNOSTICS BEAMLINE LAYOUTSpectrometer BPM @ dipole entranceScreenFaraday Cup

E-O Monitor

Screen x 3Tomography Section

Wall Current Monitor

BPM & ValveSRS Quadrupoles x 6New Quadrupoles x 4ALICENew Dipole (43) & BPMs at dipole entrance

Current measurementLongitudinal profilePosition measurementNew Quadrupoles x 4Screen& Vert. Slit Emittance measurementExtracted momentumScreenLocation for Transverse Deflecting Cavity(NOT IN BUDGET)Combined Horizontal and Vertical Steering Magnets x 4Vertical Steering Magnet x 2


Timescale for InstallationALICE shutdown25 Oct - 21 Nov 2008CompleteDiamond drilling of ALICE wall, cable tray installation

EMMA off line build of modules in S blockNov 2008 - Jul 20099 months

ALICE shutdown (In progress now)23nd Feb - 29th Mar 20095 weeksEMMA Cable pull (90%) through external labyrinth, ALICE Dipole installation, Injection line girders through equipment access doorway

EMMA installation in Accelerator HallMar - Aug 2009 6 months

ALICE shutdown (dates to be confirmed) 8th Jun - 13th Jul 20095 weeksEMMA Cable pull through external labyrinth (10%), Controls cable pull through the control room labyrinth, Ring girder installation through equipment access doorway (except Injection & Extraction girders)

Injection line complete ready for commissioning with electrons19th Jul 2009

Test IOTMay 2009Install RF waveguide distributionAug 2009Commission RF Sep 2009

EMMA Injection & extraction septum girder available for installation through equipment access doorwayend of Aug 2009

ALICE shutdown (dates to be confirmed)15th Sep - 15th Oct 20094 weeks

Test systems in Accelerator HallSep - Oct 20092 months

Ring and phase 1 diagnostic beamline complete31st Oct 2009

Commission with electrons starting1st Nov 2009


SummaryDesign phase and Procurement is well advanced with major contracts placedMajor components started to arrive in November 2008, off-line build is in progressAccess to ALICE accelerator Hall required for installation workShutdowns required to ALICE to open the cable route labyrinthWe aim to have the ALICE to EMMA Injection line ready for commissioning with electrons by 19th July 2009We aim to be ready for commissioning the EMMA ring with electrons by 1st November 2009

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emma 24 th february 2009 alice stakeholder meeting

Documents

hopealice stakeholder

field computation

dipole field scales

septum field clamps

mount magnets

large good field region

grenoble emma design

rf cavities20