Technical Advisory Board, GANIL 2015 F. CHAUTARD Technical Advisory Board Ganil 2015 F. Chautard GANIL-Caen Sytze Brandenburg (KVI), Frédéric Chautard (chair, GANIL), Antoine Daël (SACLAY), Bernard Launé (IPNO), Olivier Laurent (GANIL), Jerry Nolen (ARGONNE), Eric Petit (SP2/GANIL), Josiane Sauret (GANIL), Thierry Stora (CERN), Maurizio Vretenar (CERN) Will provide advice on the technical implications, including radio- protection and safety, of the future physics requirements and the possible large-scale maintenance needed.

Technical Advisory Board, GANIL 2015 F. CHAUTARD INTRODUCTION From the analysis of the cluster group documents by the TAB four major items emerged: 1. Source developments (stable and exotic), 2. Second station of irradiation for SPIRAL1 / 2, 3. The fragmentation at GANIL, 4. SPIRAL2 room adaptation. Safety issues For each topic, it will be underline the technical aspects that seems important to the TAB (report GANIL/SDA/611)

Technical Advisory Board, GANIL 2015 F. CHAUTARD 1 – Source developments Common to several cluster groups Of utmost importance for the future of GANIL. Technical proposals were discussed with the source experts of the committee. It appeared that various source design can be used at GANIL within a maximum of four year of development and construction. The choice and recommendation on the topic cannot be done within our committee due to the short time allowed. Meanwhile, a committee SDA/PHYSIQUE/SPIRAL2 was created at GANIL in which a ion source expert group, GANISOL, should investigate and realise the future sources at GANIL. Therefore, all demands identified from the clusters have been naturally sent to this committee.

Technical Advisory Board, GANIL 2015 F. CHAUTARD 2 - Second station of irradiation for SPIRAL1 / 2, New beamline for primary beams New beamline for the secondary beams Equipped the cave (remote handling, nuclear ventilation, gas storage …) … This requires also large amount of manpower for also a high cost.

Technical Advisory Board, GANIL 2015 F. CHAUTARD 2 - Second station of irradiation for SPIRAL1 / 2, An alternative is to use the existing target station: D2 (SIRa) and SPIRAL1 Cave. This configuration was used for SPIRAL1 beam developments where low power beam (<400W) production/source tests were performed on SIRa/D2. New sources/new targets could still be tested in SIRa (upgrades needed but known by the users of the room). Meanwhile, cave1 safety report upgrade can be started to extend the high power (>400W) beam production. Safety upgrade due to radioactive releases?

Technical Advisory Board, GANIL 2015 F. CHAUTARD SISSI2 From a technical and GANIL human resources points of view, the replacement of SISSI with identical functionality and in collaboration with cryogenic experts from IRFU/SACM laboratory seems the most optimize solution to follow. This solution induces no safety report foreseen.  April 2009: technical report of the chosen solution of replacement  June 2009: submission for competitive tendering  September 2009: return of the tendering. Meanwhile Scientific Council : “ While SISSI2 would provide some unique capabilities at non-relativistic energies for two-step reactions, the recommendation of the SC is to concentrate efforts on SPIRAL2”  April 6th : SDA/PHYSIQUE/SPIRAL2 Project review 3 – Fragmentation at GANIL

Technical Advisory Board, GANIL 2015 F. CHAUTARD 3 – Fragmentation at GANIL SPIRAL2 beams Fishbone New beamlines adapted to the fragmentation community demand and an attempt to dedicate part of the LISE spectrometer to the SPIRAL2 beams. D4, D5 and D6 room modifications The report [GANIL R 09 01] done in collaboration with IPNO defines:  The main building modifications,  The area where SPIRAL2 beams might be transported.  The cost and human resources.  The schedule (end 2010) Incidence on control access system (EIS) remains to be taken into account..

Technical Advisory Board, GANIL 2015 F. CHAUTARD 4 - SPIRAL2 room adaptations The rooms G1, G2, G3, D4, D5 and D6 are likely to receive SPIRAL2 beams and be modified. Beam dumps for SPIRAL2 beams requires the development that is not yet started.

Technical Advisory Board, GANIL 2015 F. CHAUTARD 4 - SPIRAL2 room adaptations It should also be pointed out that this new type of beamstop should probably also be implemented in other experimental setups where high intensity SPIRAL2 beams are to be used in the future (G2, SPEG, LISE3). G1

Technical Advisory Board, GANIL 2015 F. CHAUTARD 4 – Safety issues Tables per room used as inputs for the GANIL safety report (example). Beams characteristics Stable beams GANIL Exotic beams GANIL + SPIRAL1 Exotic beamsStable beams SPIRAL 2 Exotic beams SPIRAL2 post accelerated Beams of interest for physicists GANIL rangeNo restrictionsProduced in LISE Used only after CIME postacceleration Spiral 2 range Energy range [MeV/A] Maximum availableNo restrictionsFrom few MeV/u up to 100 MeV/u For calibration of the detectors and alignment of the beam, the same energy and characteristics as the radioactive beams. CIME range Beam intensity [pps] Maximum stable beams available and authorized in D3 (6 kW ?). Very low beams (1 Maximum availableBeams produced from fragmentation in D4 and D6, maximum Few nAe (10 10 pps),10 6 pps for direct studies.. Targets used (type, form, activity…) Solid targets. Be, Ni, Ta, W… Thickness: from few tens of microns to few millimetres. Solid, gaseous, cryogenic targets, usually thin targets (up to 1 mm). Solid, gaseous, cryogenic targets, usually thin targets (up to 1 mm) – used to calibrate detectors. Solid, gaseous, cryogenic targets, usually thin targets (up to 1 mm). Radioactive waste produced (solid, liquid, gas) YES - SolidNot really – mainly from the decay of the radioactive nuclei Not reallyNot really – mainly from the decay of the radioactive nuclei + reactions on a thin target Beam losses (localization) Mainly in the beam dump in the first dipole D3P1. In the selection slits In the selection slits + beam dump in D4 or D6 In the selection slits + beam dump in D4 or D6. Detectors : toxic matter used (fire, explosion …) CAVIAR -> gasAs it is in the present installation.

Technical Advisory Board, GANIL 2015 F. CHAUTARD Safety Milestones April 2009: Demand to ASN for radioactive release in the frame of the public inquiry: should take Into account ALL THE NEEDS (existing GANIL, SPIRAL 1, SPIRAL 2, news needs) GANIL SAFETY REPORT  2009: Analyse of the GANIL existing facility compare to the actual regulation  With actual beams (stable beams & SPIRAL 1)  With SPIRAL 2 beams injected in CIME and experimental areas  New needs (inputs from GANIL 2015)  End of 2009: New GANIL safety report sent to the ASN at the same time than the safety report of the 2 nd phase of SPIRAL : Modifications of the experimental area

Technical Advisory Board, GANIL 2015 F. CHAUTARD Conclusions The TAB report: Tried to help physicists to express their fundamental needs:  Because of SPIRAL2  With the existing machine To fill exhaustively the GANIL safety report and radioactive release demand (short term demand) Showed the importance to have tight collaboration between Physicist/ Engineers Now, we know what need to be done … how to manage it ?