ECPM 2009

CYCLONE® 70ARRONAX Cyclotron

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ARRONAX Cyclotron

Groningen, The Netherlands October 2009

Luis Medeiros RomaoProject Manager

On behalf of the team…

The Goals©

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The Goals©

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The Time Line©

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Birthday…30/04/2006©

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Today…29/10/2009©

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Today…29/10/2009©

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Today…29/10/2009©

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Today…29/10/2009©

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Today…29/10/2009©

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Progress Report…

� Treated « childhood » illnesses:� Compensation coils� Harmonic 1

� « Teenager » complications being treated:� Electrostatic deflector� High intensity proton beam

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� High intensity proton beam

� Substantial steps to « Adult » maturity:� 85% of acceptance tests passed with success� Substantial beam performances in all 4 particles� …

Compensation Coils

� Issue:� Kapton Isolation ���� short-circuits during current ramp-up

� Solution:� Epoxy isolated coils

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Compensation Coils©

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Harmonic 1

� Issue:� H1 magnetic component ~ 10G (B ~ 1,6T)

� Consequences:� Beam decentering� Dangerous crossing of νz = 0.5 & νr = 2 νz

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� Dangerous crossing of νz = 0.5 & νr = 2 νz

� Negative impact on the He 2+, D- and HH+ beam optics

� Solution:� Harmonic coils ���� center & outer radii

Harmonic 1 – Center Coils

� Center radii ���� 300At� Magnetic gap decreased from 30mm ���� 16mm

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Harmonic 1 – Outer Coils

� Outer radii ���� 90At� Magnetic gap decreased from 30mm ���� 20mm

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Harmonic 1 – Outer Coils©

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Harmonic 1 – Beam Scraper©

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Electrostatic deflector

� Issues:� Septum’s power dissipation capacities � Pre-septum’s position

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Electrostatic deflector

� Solutions:� Two redesigned septa: Cu & Cu – W

� Optimized profile:� Recalculated thickness variation ���� power dissipation� Gap variation: 4 – 8mm� Vext = 65 – 70kV

� Reduced septum to pre-septum distance: 10mm ���� 1mm

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Electrostatic deflector – Cu ©

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Electrostatic deflector – Cu - W

Brazed removable W insert

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Electrostatic deflector – Septum Protection ©

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High Intensity 70MeV Proton Beam

� Issues:� Outgassing:

� Stripper probes� Vacuum chamber

� Fast o-ring deterioration:� Stripper probes� Stripper air locks

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� Extraction vacuum chamber

� Solutions:� New stripper probes ���� double cooling circuit� Cooling on vacuum chamber� O-ring protections

High Intensity 70MeV Proton Beam©

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High Intensity 70MeV Proton Beam©

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High Intensity 70MeV Proton Beam©

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Alpha Pulsing

� “Cold” factory testing on going� Waiting for site installation

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Alpha Pulsing

� Pulses: ns ���� ms� Frequency = 1.5MHz� V resonator = 50kV

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Achievements – Acceptance Tests

� Injection yields:� H-: > 25% (with buncher)� He2+ / HH+ / D- : > 10% (with buncher)

� Transmission yields:� H- : 95%� D-: 75% (taking into account magnetic gap variation)

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� D-: 75% (taking into account magnetic gap variation)� He2+ : 85% (taking into account magnetic gap variation)� HH+: 85% (taking into account magnetic gap variation)

� Extraction yields:� He2+ :73% � HH+: 74%� H- / D- : > 99%

Achievements – Acceptance Tests

� Simultaneous beam extraction:� H- 70 MeV: > 200µA� H- 30 MeV: > 200µA

� Beam transport on all beam lines and all particles:� Transport yields: > 96%� Target yields: 92%

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� Target yields: 92%� Exception: 90 °°°° magnet beam line ���� 68%

� Validated solid target system

� Validated control system

� Validated interlock system

Achievements – Present Performances

� H- : � 1mA at 150mm (1MeV)� High current BTL validated at 375µA 70MeV � 2 x 200µA 70MeV� 1 x 500µA 30MeV

� D- : � 50µA 35MeV

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� 50µA 35MeV

� He2+ : � 25µAe 70MeV

� HH+ : � 25µAe 35MeV

� Base vacuum: 4 10 -7mbar

Major Final Steps...

� H- :� 2 x 375µA 70MeV� 55kW proton beam

� He2+ :� 70µAe 70MeV

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� HH+ :� 50µAe 35MeV

� Alpha pulsing integration

Control System©

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Control System©

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Control System©

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Control System©

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Control System©

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Control System©

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Thank-you…©

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Team…� R&D Management:

� Yves Jongen� Michel Abs� Albert Blondin

� System Owner: � Jean-Luc Delvaux

� Physicists:� Will Kleeven� Simon Zaremba� Dirk Vandenplaasche� William Beeckman

� Control System Engineer:� Marc Pinchart

� Technical team:� Jean-Baptiste Oliva� Dominique Bourgeois� Serge Monfort

� Logistics: � Chantal Van Uytven

� QA:� Delphine Rosoux

� QC:

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� William Beeckman� Yves Paradis

� Designers:� Jean-Claude Amélia� Matthieu Lemercier� Sébastien de Neuter� Gérard Lannoye� Sébastien Deprez� Christian Van Hove

� Field Engineers: � Thierry Vanderlinden� François Peeters

� QC: � Pascal Pelerin

� Supply Chain:� Louis-Guy Servotte� Pascal Robert

� Partners:� Sigmaphi� Pantechnik� Cegelec