The low-energy facility at SPIRAL 2 Désintégration Excitation

The low-energy facility at SPIRAL 2 Désintégration, Excitation et Stockage d’ Ions Radioactifs transport-energy (50 ke. V) exotic-nuclide beams for: decay spectroscopy - nuclear fine structure laser spectroscopy - charge radii & moments ion / atom trapping - masses, ion-purification weak interaction studies For the DESIR Collaboration: D. Lunney, SPIRAL 2 SAC, 29 January 2009

The low-energy facility at SPIRAL 2 Désintégration, Excitation et Stockage d’ Ions Radioactifs Spokesperson: B. Blank GANIL liaison: J. -C. Thomas collaboration initiated during the first SPIRAL 2 workshop, July 2005 series of meetings through 2006 -2008 to define DESIR: B. Blank, P. Campbell, F. Le Blanc, M. J. Garcia-Borge, M. Lewitowicz, D. Lunney, O. Naviliat-Cuncic, G. Neyens, J. -L. Tain, P. Thirolf, J. -C. Thomas over 110 scientists (lol & tp)

low (no) energy & precision measurements Increased production for two nuclear structure paradigms: Ø intensity for specific reactions Ø chart the terra incognita ISOL: good beam quality TRAP: long observation time decay kinematics four-year observation considerably less… beam preparation DESIR: (precise) knowledge of global observables and detailed spectroscopy NIST Jackson Pollock

SPIRAL 2 facility NFS LINAC S 3 production building DESIR RFQ HRS GANIL/SPIRAL 1

SPIRAL 2 front end target to DESIR production vault (red) high-intensity cooler (SHIRAC) and high-resolution separator F. Varenne, GANIL yield station to post-accelerator (CIME)

High-resolution mass separator symmetric design - inspired by the CARIBU HRS at Argonne National Laboratory: C. N. Davids and D. Peterson, NIMB (2008) Beam profile in x-direction T. Kurtukian-Nieto, CENBG Suggested layout

High-intensity ion cooler (SHIRAC) Cooler for Accumulation & Radioactive on Line Analysis High dispersion High angular acceptance Low emittance cooling confinement Goal: gaz faisceau * high-voltage (20 k. V), high frequency (20 MHz) linear RFQ trap for strong confinement: u. A beams 100 confinement of present devices: prototype Results: * u. A beam trapped at Orsay: O. Gianfrancesco et al. , NIMB (2008) * Emittance measurements underway at LPC: F. Duval, Ph. D, U. Caen (2009) G. Ban, LPC-Caen

DESIR experimental equipment • 2. 2. 1. High-intensity cooler (LPC Caen) • 2. 2. 2. High-resolution separator (CENBG Bordeaux) • 2. 2. 3. Fast tape-station (IPHC Strasbourg) • 2. 2. 4. Stable sources & general-purpose ion buncher (CSNSM/GANIL) * 2. 2. 5. Collinear laser set-up (Manchester, Leuven, Birmingham, Orsay) including a b-NMR set-up * 2. 2. 6. b-decay set-up (Bordeaux, GANIL, Strasbourg, Orsay, Madrid) total-absorption spectrometer (Valencia/Surrey) Penning-trap-assisted spectroscopy (Bordeaux) neutron set-ups TETRA (Dubna) and CIEMAT (Madrid, Caen) fast-timing spectroscopy (Uppsala/Grenoble) general-purpose spectroscopy (Madrid) * 2. 2. 7 MLL Penning-trap system (LMU Munich) * 2. 2. 8. Magneto-optical trap (KVI Groningen) * 2. 2. 9. Decay kinematics Paul-trap (LPC Caen)

LUMIERE for radii & moments Laser Utilisation for Measurement and Ionization of Exotic Radioactive Elements laser beam magnets B Recent examples: ISOLDE: D. Yordanov et al. , PRL (2008) JYFL: B. Cheal et al. , PLB (2007) P. Campbell, U. Manchester; G. Neyens, K. U. Leuven; F. Le Blanc, IPN-Orsay

BESTIOL experiment (BEta-decay studies at Spiral Two Is. OL) TONNERRE TETRA CIEMAT fast timing TAS T-AS M. -J. Ga Borge, J. -L. Tain, Y. Penionchevich, D. Cano, H. Mach, G. Simpson, B. Blank, N. Orr

Reiner Krueken

DESIRTRAP (formerly MAFFTRAP) masses: nucleosynthesis, magic-number migration, weak-interaction studies D. Neidherr et al. , ISOLTRAP (2008) P. Thirolf, LMU-Munich

LPC trap for decay-correlation studies deduce b-n angular correlation from measurement of b-recoil X. Flechard et al. , PRL (2008) candidate: "Ring" trap (pure GT transition) cooling & bunching trapping & measuring Also: atom traps SPIRAL 1 low-energy beam line E. Liénard & O. Naviliat-Cuncic, LPC-Caen H. Wilschut, KVI-Groningen

Various beams to DESIR GANIL - SPIRAL 1 (S 1) DESIR S 3 SPIRAL 2 (S 2)

DESIR beam hall Identification station with tape LUMIERE BESTIOL Laser mezzanine S SAS DAQ room RFQ buncher MLL trap ul Pa ap tr Meeting room 5 m Gas & waste storage Crane access to basement on tr eu h N ditc e bl ou T D MO e in f-l ce of our s 1 e in f-l ce of our s 2 al er e en os G rp pu (on top of DAQ) P D enn ec in ay + g se tra tu p p G pu en rp era os l e Control room Beam from Level -1 IS (on top of CR) TA C sp olli ec ne b- tro ar L N sc a M o s R p er y Kitchen + WC LN 2 Electronics Desk Access

DESIR cave Work shop Assembly Room 3 free X Radio storage lab Gray Room 1 HV supplies Gray Electri. Room 2 city Storage 2 Storage 1 Supply Control Racks Interfaces Crane access to basement 5 m on tr eu h N ditc Assembly Room 1 Room 2 Limits of DESIR hall

Pa u trap l control room MOT LUMIERE ion sources her c bun MLL Penning trap S 1 S 2 S 3 BESTIOL general purpose spectroscopy TAS automated beam tuning system ne utr o ns

DESIR facility work packages • General-purpose ion buncher and stable-ion sources: • RFQ SHIRAC: • High-resolution separator: • Identification station: • Beam transport lines: • Safety and security: • Command/Control, diagnostics: • Building: Pierre Delahaye Gilles Ban Bertram Blank Philippe Dessagne Francois Le Blanc Jean-Charles Thomas Stéphane Grévy Franck Delalee DE IR …from the desire for fine physics Thanks to the collaboration & spokesman

DESIR time line

• DESIR hall + bâtiment d’interface : • Cooler SHIRAC non-nucléarisé (LPC Caen) : • HRS (CENBG – contribution pour hall de montage) : • mission DESIR – HRS (CENBG) : • HRS : • lignes de faisceau (optique, pompage) : vers DESIR : dans DESIR (seulement l’arête) : • contrôle/commande, diagnostiques: • station d’identification (Strasbourg) : • General purpose ion buncher GPIB (GANIL) + 2 stable IS: • fast timing setup (Grenoble) : • Beam-preparation double Penning trap (CENBG) : • LPCTRAP facility (LPC) : • Neutron detection array(LPC) : Mode de financement: 6000 k€ 450 k€ 4 * 15 k€/an 1500 - 3000 k€ 2700 k€ 870 - 1400 k€ 140 k€ 290 k€ 34 k€ 945 k€ 105 k€ 150 k€ SPIRAL 2, Espagne, ANR, Région Aquitaine, IN 2 P 3, CPER, GANIL, laboratoire, Europe ?

• Cooler SHIRAC (LPC Caen) : 450 k€ + nucléarisation (dont 320 k€ CPER) • HRS (CENBG – contribution pour hall de montage) : 50 k€ • mission DESIR – HRS (CENBG) : 4 * 15 k€/an • station d’identification (Strasbourg) : 140 k€ • General purpose ion buncher GPIB + 2 stable IS (GANIL/CSNSM) : 290 k€ • Double Penning trap (mission + fonctionnement) (CENBG) : • LPCTRAP (LPC) : • Neutron detection array (LPC) : • fast timing setup (Grenoble) : • DESIR hall + bâtiment d’interface : • Contribution HRS ? • eventuellement: • lignes de faisceau : vers DESIR : dans DESIR (seulement l’arête) : contrôle/commande, diagnostiques: 190 k€ 105 k€ 150 k€ 34 k€ 4000 k€ (+ 2000 k€ CPER) 2700 k€ 870 - 1400 k€

• Beam-preparation double Penning trap, investissement (CENBG) : 755 k€ Espagne: • HRS : • lignes de faisceau : 1500 - 3000 k€ to DESIR : 2700 k€ central DESIR beamlines: 870 - 1400 k€ contrôle/commande, diagnostiques: 400 k€ What about the S 3 -DESIR line?

année SHIRAC (LPC Caen) 2009 2010 40 15 GPIB + 2 ion sources (CSNSM + GANIL) 15 15 60 70 1 1 76 62 46 120 91 50 LPCTRAP (LPC Caen) Neutron array (LPC Caen) 50 50 50 Fast timing (LPSC Grenoble) total 2013 50 Double Penning (CENBG) Station d’identification (IPHC) 2012 60 hall de montage CENBG (HRS) Mission DESIR + HRS (CENBG) 2011 50 55 ? ? 34 140 251 341 250 + main d’œuvre du GANIL, du CENBG, de l’IPNO, du LPC Caen, de l’IPHC, du LPSC…