Future Flagship Projects in Accelerator Research and Laser-Plasma Acceleration

Expression of Interest for potential flagship projects in accelerator research and laser-plasma acceleration, focusing on collaborative efforts among international scientific councils to advance particle acceleration technologies. Projects include ALP LAL, IRFU, LLR, PERLE, ERL demonstrator, and compact neutron source development. Emphasis on enhancing collaboration, developing simulation tools, and building dedicated experimental facilities.

• Flagship Projects
• Accelerator Research
• Laser-Plasma Acceleration
• International Collaboration
• Particle Acceleration

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1. Expression of Interest for future flagship projects P2IO International Scientific Council 24 Nov. 2017

2. EOI on Accelerators On the accelerator research area, 3 EOI expressed A laser-plasma accelerator for P2IO - ALP LAL, IRFU, LLR+ potentially other P2IO laboratories e-IPHI : extension of IPHI accelerator for a prototype of a compact thermal neutron source IRFU + potentially other P2IO laboratories PERLE : a multi-turn, high intensity Energy Recovery Linac (ERL) demonstrator LAL, IPNO + potentially other P2IO laboratories - 2 -

3. Laser-plasma acceleration Question: could laser-plasma acceleration produce high quality beams for high energy physics ? Laser plasma acceleration : one of the most promising development for particle acceleration for some applications Excellent local context and environment: 3 P2IO groups are working in this domain, and more in the paris-saclay perimeter, and 3 projects/installations: * Equipex CILEX: Apollon laser (10 PW) and long focal length area * ESCULAP R&D program in the valley * European project EUPRAXIA. - 3 -

4. Laser-plasma acceleration Main goals: - Enhance the collaboration between the 3 groups to develop all required skills to achieve experiments on laser-plasma acceleration - Develop mass simulations tools required for simulation of laser plasma acceleration, based on upcoming exascale computing capabilities - Moyen: tudier et de r aliser, une installation plasma aupr s du laser APOLLON de CILEX, orient e vers la th matique de l'acc l ration laser- plasma, avec toute l'instrumentation associ e du plasma et du faisceau d lectrons. How ? - Study and develop a dedicated laser-plasma acceleration experimental facility close to the Apolon laser, equipped with all plasma and electron beam instrumentation - 4 -

5. E-IPHI : towards a compact neutron source e-IPHI : extension of the IPHI accelerator in order to build a demonstrator of a compact source for thermal neutrons General context of research reactor being closed in EU : need for alternative solution such as compact neutron source (CANS) based on accelerators. Roadmap: - Feasibility (proton on Be target) studied and performed on IPHI. - Final objective: SONATE project (p of 20 to 30 MeV, peak current of 100 mA, pulsed 6%), neutrons lines Goal : achieve the IPHI phase: extension of the actual IPHI bunker, additional length, additional beam instruments, add neutron measurement characterization capabilities, perform tests and experiments. e- beam line and - 5 -

6. PERLE: a unique demonstartor of ERL capabilities New accelerator concept: Energy Recovery Linac (ERL) Deceleration of a bunch of particle in a cavity give the required energy to accelerate another bunch in the same cavity, at the same time, but with a 180 dephasing. Very compact scheme, reduced cost (RF sources at lower power) and compatible with very high currents Demonstrators worldwide are being d monstrateurs (CBETA @ Cornell; BerlinPro) based on this concept, but with limited P~virtual ~1 MW) constructed ambition (single turn, D. Bilderback ERLs are desirable because they provide (nearly) linac quality/brightness beam at (nearly) storage ring beam powers: Pbeam>>PRF beam quality source limited: beam< ring equilibrium high power beam with reduced RF drive cost savings! radiation control: beam is dumped at low energy can mitigate intractable (i.e. expensive) environmental/safety concerns - 6 -

7. PERLE: a unique demonstartor of ERL capabilities Projet PERLE @ Orsay A demonstrator of an electron ERL 400 MeV, 15 mA (Pvirtuel ~10 MW) Include 3 recirculating arc 2 superconducting linacs The unique ERL project cumulating high cirrent, multi-turn A collaboration is being set with CERN, JLAB, Daresbury, Novosibirsk, University of Liverpool Evolution of ERL performance can be characterized by increases in full-energy beam power multiplication factor dynamic range Efull/Edump Present state of art (for true ERLs those with multiplication factor >1): Pbeam~ 1.25 MW Pbeam/PRF~ 10 Efull/Edump~ 10 PERLE calls a factor of 10 increase in each of these, and is thus a natural step towards LHeC (100x and beyond ) - 7 -