New electromagnets for the HIE-ISOLDE beam transfer lines: Current work status PANAGIOTIS FARANTATOS(TE/MSC-MNC)* WP3, ESR 4: New Magnet HIE-ISOLDE Workshop: The technical aspects, 28th November 2013 * The research project has been supported by a Marie Curie Early Initial Training Network Fellowship of the European Community’s Seventh Programme under contract number (PITN-GA-2010-264330-CATHI) HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Outline HIE-ISOLDE: Magnet requirements Magnets’ status Dipole Quadrupole H/V Steerer Current integration studies Influence of welds in quadrupole’s vacuum chamber bellow Influence of steerer’s stray field on vacuum and instrumentation Conclusions and future work HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

The HIE-ISOLDE magnets * Options additional to baseline order 4 + 3* dipoles (TESLA, UK) 24 + 8* quads (ELYTT, ES) 13 + 10* H/V steerers (ANTEC, ES) HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Deflection angle [deg] Dipole Bending radius [m] Deflection angle [deg] Field in centre [T] Integrated field [Tm] Magnetic length [m] 1.8 45 0.11 - 1.14 0.15 - 1.61 1.414 Laminated steel yoke M1400-100A ARMCO end plates Welded tension straps Bronze water connection blocks Pancake coils Detailed in “Magnets” presentation at HIE-ISOLDE HEBT Technical Design Review, 6th July 2012 HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Planning: Dipole 1st beam line Supply Contractual delivery dates Manufacturing file, schedules and samples 13th December 2013 Pre-series dipole 30th May 2014 One series dipole 1st August 2014 Two series dipoles + coils 10th October 2014 Two optional series dipoles 5th December 2014 One optional series dipole 5th January 2015 1st beam line HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Integrated gradient [T] Quadrupole Gradient [T/m] 0.5 - 25 Integrated gradient [T] 0.1 - 5.0 Aperture radius [mm] 25 Magnetic length [m] 0.2 Detailed in “Magnets” presentation at HIE-ISOLDE HEBT Technical Design Review, 6th July 2012 HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Planning: Quadrupole 1st beam line Supply Contractual delivery dates Manufacturing file, schedules and samples 14th October 2013 Two pre-series quadrupoles 14th April 2014 Four series quadrupoles (1st batch) 30th May 2014 Four series quadrupoles (2nd batch) 27th June 2014 Four series quadrupoles (3rd batch) 25th July 2014 Four series quadrupoles (4th batch) 15th September 2014 Four series quadrupoles (5th batch) 13th October 2014 Two series quadrupoles + coils (6th batch) 27th October 2014 Four series quadrupoles (1st optional batch) 24th November 2014 Four series quadrupoles (2nd optional batch) 22nd December 2014 1st beam line HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Integrated field [Tmm] H/V Steerer Integrated field [Tmm] Magnetic length [mm] Physical aperture [mm x mm] Physical length [mm] 9.1 (LINAC) 6 (HEBT) 256 90 × 90 92 Solid steel yoke block (ARMCO) Racetrack coils Bronze water connection blocks Flexible water hoses Detailed in “Magnets” presentation at HIE-ISOLDE HEBT Technical Design Review, 6th July 2012 HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Planning: H/V Steerers Supply Contractual delivery dates Manufacturing file, schedules and samples 7th February 2014 One pre-series H/V steerer 20th June 2014 Four series H/V steerers (1st batch) 8th August 2014 Four series H/V steerers (2nd batch) 29th August 2014 Four series H/V steerers (3rd batch) 19th September 2014 Four series H/V steerers (1st optional batch) 10th October 2014 Four series H/V steerers (2nd optional batch) 31st October 2014 Two series H/V steerers (3rd optional batch) 14th November 2014 1st beam line HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Integration study: Quad bellow Longitudinal welds Relative permeability: 1.15-1.25 Quadrupole center point HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Integration study: Quad bellow HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Integration study: Stepping motor Potential perturbation on DB’s stepping motors’ operation due to steerer’s stray magnetic field HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Integration study: Stepping motor Stray field distribution along stepping motor envelope HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Integration study: Vacuum pump Turbo-pump: Potential perturbation on its operation due to interference with steerer’s stray magnetic field 81 mm 258 mm H/V steerer HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Integration study: Vacuum pump Stray field distribution along vacuum pump’s envelope Field limit for Baxial Upper limits Field limit for Bradial Field component Operational limit of pump Radial field (Br) 3 mT Axial field (Bz) 15 mT Solutions: 1) Move turbo-pump 100mm away 2) Shielding HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Vacuum pump: Shielding proposal Material: 1010 steel Advantages of 1010 steel compared to Mu-metal Higher saturation No need for thermal treatment after machining Less expensive HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Vacuum pump: Shielding proposal Stray field distribution along turbo-pump envelope Field limit for Baxial Field limit for Bradial Safe operation for turbo-pump HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Vacuum pump: Shielding proposal Shielding does not affect the steerer’s field quality HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

Conclusions - Future work Magnet manufacturing On schedule so far – however, no margin Longitudinal welds on quad’s bellow Minor influence on quad’s field quality - within tolerances - ongoing DB stepping motors - H/V steerer stray field Field tolerances for stepping motor’s normal operation should be defined Magnetic shielding if necessary Vacuum pump - H/V steerer stray field Steerer’s stray field significantly affects the operation of the vacuum pump Magnetic shielding assures vacuum pump’s undisturbed operation H/V steerer’s field quality is almost intact Integration of magnetic shielding HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS

THANK YOU FOR YOUR ATTENTION! HIE-ISOLDE Workshop, 28-29 November 2013 P. FARANTATOS