Hi Po Spa NS High Power Spallation Neutron

Hi. Po. Spa. NS High Power Spallation Neutron Source Tobias Bär, Miriam Fitterer, Fernando Mirapeix, Robert Williamson

Why do we want a spallation neutron source?

Neutrons penetrate deep into matter Alpha Beta X-rays Neutron

Neutrons “see” the world in a unique way

Hi. Po. Spa. NS Site S a. N p S o Hi. Po. Span. NS site: about 10 km west of San Sebastian (Spain)

Schematic Layout Management and HR Injection Source, RFQ, Linac ac t Ex tr RF io n Tetrode gallery FIPPS Target & Experimental Hall

Injector H- Ion Source LEBT 65 ke. V � Penning RFQ MEBT 3 Me. V DTL 50 Me. V CCL SCL 200 Me. V 400 Me. V type H- ion source, 1 ms � 3 solenoid LEBT � 4 -vane RFQ, 324 MHz � Fast chopper in MEBT � Frequency jump at CCL to 648 MHz � Superconducting linac to 400 Me. V

Synchrotron � 0. 4 – 1. 5 Ge. V RCS � 700 m, 3 superperiod doublet lattice � Sinusoidal B field (0. 27 – 0. 6 T) � Ceramic vacuum chamber � RF frequency sweep �Magnetic alloy loaded cavities �(304 – 415 k. Hz, 608 – 830 k. Hz) Transition 9. 14 � H- Charge exchange injection RCS � Gamma �Carbon foil � 1. 25 x 1014 protons over 670 µs (~200 turns) � Fast kicker extraction of 1µs pulse

T-FIPPS Target Tunable Fully Integrated Power Powder Stream Target

T-FIPPS Target Parameters Powder material: W, Ni, Ti, (U) Beam-Powder interaction length: 2 m (≈2. 5 ∙ mean free path in W powder) Jet velocity: 5 m/s Neutron flux: About 30 n/p, -> 3∙ 1017 n/s

Summary � High power microscope for the future � Large �A neutron user community steal at only € 1 bn � Several upgrade paths � Investment for the future