EMMA 24 th February 2009 ALICE Stakeholder Meeting
EMMA Layout IOT Racks ALICE Stakeholder meeting - Feb 2009
EMMA Infrastructure upgrade in progress in ALICE Accelerator Hall ALICE Stakeholder meeting - Feb 2009
Injection Line Assembly in progress in S Block ALICE Stakeholder meeting - Feb 2009
Integration ALICE Diagnostics Beamline IOT Rack RF Distribution ALICE Stakeholder meeting - Feb 2009
Aims & Objectives of EMMA Project World’s first NS-FFAG (non-scaling Fixed Field Alternating Gradient) accelerator • FFAG: Field fixed in time but varies across pipe • Nonscaling: Dipole field scales with momentum but focussing quadrupole fields do not – – Optics changes during acceleration – Betatron Tune changes during acceleration – Resonances unavoidable – But rapid acceleration means this is not fatal. (We hope) ALICE Stakeholder meeting - Feb 2009
CONFORM ( COnstruction of a Nonscaling FFag for Oncology, Research, and Medicine ) www. conform. ac. uk • Total funds £ 6. 9 m over 4 year project lifecycle from RCUK Basic Technology from 1 st April 2007 • Led 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 applications • BASROC (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 ALICE Stakeholder meeting - Feb 2009
EMMA Basic Parameters Energy range 10 – 20 Me. V Lattice F/D Doublet Circumference 16. 6 m No of cells 42 Normalised transverse acceptance 3π mm-mrad Frequency (nominal) 1. 3 GHz No of RF cavities 19 Average beam current 13 μA Repetition rate 1, 5, 10, 20 Hz Bunch charge 16 -32 p. C single bunch ALICE Stakeholder meeting - Feb 2009
Requirements • Full aperture injection and extraction at all energies 10 – 20 Me. V • 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. ALICE Stakeholder meeting - Feb 2009
Ring Magnets Requirements / Solution • Adjust dipole & quadrupole components independently - Mount magnets on independent radial linear slides • Fields 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 All magnets scheduled to be delivered from TESLA by 10 th April 2009 ALICE Stakeholder meeting - Feb 2009 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 contributions
RF Cavities 20 (19 + spare) production cavity construction in progress – give fast acceleration • 4 of 5 batches delivered to DL • 5 th batch – scans awaiting approval by DL ALICE Stakeholder meeting - Feb 2009
Injection/Extraction Septum Design • • In house design of septum and vacuum chamber in progress Wire eroding of lamination stacks is in progress. Delivery scheduled for Feb – Mar 2009 Manufacture Misc. septum components Apr – May 2009 Magnet measurements scheduled for Jun 2009 Section view of septum in vacuum chamber ISO view of septum with vacuum chamber removed ALICE Stakeholder meeting - Feb 2009 Plan view of septum in vacuum chamber
Kicker Magnet Design • • Kicker component manufacture by Brite Precision, Newbury Ferrite blocks manufactured by Ceramic Magnetics, New Jersey Prototype kicker magnet complete. Four production devices to follow subject to successful testing Delivery to APP in early March to be used as the test load for the kicker power supplies 0 10 Ferrite CDM 5005 C core (Ceramic Magnetics, New Jersey) ALICE Stakeholder meeting - Feb 2009 mm
Standard Ring Vacuum Chamber • • Contract placed for BPM pickups with Testbourne. Delivered November 2008 Contract placed with VG Scienta for the vacuum chambers. Manufacture in progress – Batch Delivery – March 2009 Clean vacuum testing & RGA cleanliness tests at the factory before delivery to Daresbury Particle processing at Daresbury BPM Block ALICE Stakeholder meeting - Feb 2009
RF Distribution • • • Contact placed with Q-Par Angus in Oct. 2008 Manufacture and testing in progress Delivery due end of March 2009 ALICE Stakeholder meeting - Feb 2009
RF Source • • • Inductive Output Tube VIL 409 90 k. W Transmitter Contact placed with CPI in Sep. 2008 Full testing at CPI before delivery Delivery due end of March 2009 Commissioning at Daresbury in late April – early May ALICE Stakeholder meeting - Feb 2009
INJECTION LINE ALICE to EMMA BPM Position measurement Vacuum valve ALICE New Dipole 30° SRS Quadrupoles x 2 Wall Current Monitor io n Screen D ire ct Screen & Vert. Slit Be a m EMMA Ring Tomography Section SRS Quadrupoles x 3 Screens x 3 (emittance measurement) Emittance measurement Screen Vacuum valve New Dipole 30° & BPMs at dipole entrance Position measurement Vertical Steering Magnet x 2 • Beam Dump New Dipoles x 2 (33°) & BPMs at dipole entrance Position measurement ALICE Stakeholder meeting - Feb 2009 Ion Pump Combined H and V Steering Magnet x 4 New Quadrupoles x 13 • Match the probe beam to the requirements of EMMA Measure the properties of the probe beam
DIAGNOSTICS BEAMLINE LAYOUT SRS Quadrupoles x 6 New Quadrupoles x 4 Screen & Vert. Slit Screen x 3 Tomography Section Emittance measurement Wall Current Monitor Location for Transverse Deflecting Cavity (NOT IN BUDGET) BPM & Valve Current measurement Spectrometer Extracted momentum BPM @ dipole entrance Screen Faraday Cup E-O Monitor Longitudinal profile Screen Vertical Steering Magnet x 2 ALICE New Dipole (43°) & BPMs at dipole entrance Combined Horizontal and Vertical Steering Magnets x 4 Position measurement New Quadrupoles x 4 ALICE Stakeholder meeting - Feb 2009
Timescale for Installation ALICE shutdown Diamond drilling of ALICE wall, cable tray installation 25 Oct - 21 Nov 2008 Complete EMMA off line build of modules in S block Nov 2008 - Jul 2009 9 months ALICE shutdown (In progress now) 23 nd Feb - 29 th Mar 2009 5 weeks EMMA Cable pull (90%) through external labyrinth, ALICE Dipole installation, Injection line girders through equipment access doorway EMMA installation in Accelerator Hall Mar - Aug 2009 6 months ALICE shutdown (dates to be confirmed) 8 th Jun - 13 th Jul 2009 5 weeks EMMA 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 electrons 19 th Jul 2009 Test IOT Install RF waveguide distribution Commission RF May 2009 Aug 2009 Sep 2009 EMMA Injection & extraction septum girder available for installation through equipment access doorway end of Aug 2009 ALICE shutdown (dates to be confirmed) 15 th Sep - 15 th Oct 2009 Test systems in Accelerator Hall 2 months Sep - Oct 2009 Ring and phase 1 diagnostic beamline complete 31 st Oct 2009 Commission with electrons starting 1 st Nov 2009 ALICE Stakeholder meeting - Feb 2009 4 weeks
Summary • Design phase and Procurement is well advanced with major contracts placed • Major components started to arrive in November 2008, off-line build is in progress • Access to ALICE accelerator Hall required for installation work • Shutdowns required to ALICE to open the cable route labyrinth • We aim to have the ALICE to EMMA Injection line ready for commissioning with electrons by 19 th July 2009 • We aim to be ready for commissioning the EMMA ring with electrons by 1 st November 2009 ALICE Stakeholder meeting - Feb 2009
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