EMMA 24 th February 2009 ALICE Stakeholder Meeting.

EMMA24th February 2009

ALICE Stakeholder Meeting

ALICE Stakeholder meeting - Feb 2009

IOTRacks

EMMA Layout


EMMA Infrastructure upgrade in progress in ALICE Accelerator Hall


Injection Line Assembly in progress in S Block


Integration

IOT Rack

ALICE

DiagnosticsBeamline

RF Distribution


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)


CONFORM

CONFORM ( 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 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/

–


EMMA Basic Parameters

Energy range 10 – 20 MeV

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 pC single bunch


Requirements

• Full 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 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

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

All magnets scheduled to be delivered from TESLA by 10th April 2009


RF Cavities

20 (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 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

Plan view of septum in vacuum chamber

Section view of septum in vacuum chamber

ISO view of septum with vacuum chamber removed


Kicker Magnet Design

Ferrite CDM5005C core(Ceramic Magnetics, New Jersey)

100 mm

• 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


Standard Ring Vacuum Chamber

BPM Block

• 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


RF Distribution

• Contact placed with Q-Par Angus in Oct. 2008

• Manufacture and testing in progress

• Delivery due end of March 2009


RF Source

• Inductive Output Tube• VIL409 90 kW 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


INJECTION LINE ALICE to EMMA

New Dipoles x 2 (33°) & BPMs at dipole entrancePosition measurement

New Dipole 30°& BPMs at dipole entrancePosition measurement

BPMPositionmeasurement

Wall Current Monitor

New Quadrupoles x 13

Ion Pump

Vacuum valve

Tomography SectionScreens x 3(emittance measurement)

SRS Quadrupoles x 3

Screen &Vert. Slit

Beam

Dire

ction

SRS Quadrupoles x 2

Screen

Vacuum valve

Screen

Emittance measurement

Combined H and V Steering Magnet x 4

EMMARing

ALICE

• Match the probe beam to the requirements of EMMA

• Measure the properties of the probe beam

Vertical Steering Magnet x 2

Beam Dump

New Dipole 30°


DIAGNOSTICS BEAMLINE LAYOUTSpectrometer BPM @ dipole entranceScreenFaraday Cup

E-O Monitor

Screen x 3Tomography Section

Wall Current Monitor

BPM & Valve

SRS Quadrupoles x 6

New Quadrupoles x 4

ALICE

New Dipole (43°) & BPMs at dipole entrance

Current measurementLongitudinal profile

Position measurement

New Quadrupoles x 4

Screen& Vert. Slit

Emittance measurement

Extracted momentum

Screen

Location for Transverse Deflecting Cavity(NOT IN BUDGET)

Combined Horizontal and Vertical Steering Magnets x 4

Vertical Steering Magnet x 2


Timescale for Installation

ALICE shutdown 25 Oct - 21 Nov 2008 CompleteDiamond drilling of ALICE wall, cable tray installation

EMMA off line build of modules in S block Nov 2008 - Jul 2009 9 months

ALICE shutdown (In progress now) 23nd Feb - 29th 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) 8th Jun - 13th 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 19th Jul 2009

Test IOT May 2009Install RF waveguide distribution Aug 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 2009 4 weeks

Test systems in Accelerator Hall Sep - Oct 2009 2 months

Ring and phase 1 diagnostic beamline complete 31st Oct 2009

Commission with electrons starting 1st Nov 2009


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 19th July 2009

• We aim to be ready for commissioning the EMMA ring with electrons by 1st November 2009

EMMA 24 th February 2009 ALICE Stakeholder Meeting.

Documents

Transcript of EMMA 24 th February 2009 ALICE Stakeholder Meeting.