A. FaccoEURISOL DS Orsay, 3 Feb 2005 Task 7 Proton Accelerator “The objective of the Proton Accelerator Task is the design a 5 mA CW, 1 GeV proton linac (with heavy ion capability for A/q ≤ 2 and possibly up to A/q = 3) as the main driver for EURISOL. This development will have possible application in all projects requiring high intensity proton beams.”

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Proton (Deuteron)Accelerator

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Participants: P3 - INFN-LNL Istituto Nazionale di Fisica Nucleare – Laboratori Nazionali di Legnaro, Legnaro (I) P2 – CNRS/IN2P3 Centre National de la Recherche Scientifique/ Institut National de Physique Nucléaire et de Physique des Particules, Paris (F) P7 – CEA Commissariat a l’Energie Atomique (Direction des Sciences de la Matiere), Paris (F) Contributors: C9 - TRIUMF Tri-University Meson Facility, Vancouver (CA) C10 – SOREQ Soreq Nuclear Research Centre,Yavne (IL)

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Planning

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Main goals for the first 12 months Acquire from other tasks the specifications which are still fluctuating –Final energy of the deuteron beam; required Heavy Ion capability; extraction lines specifications; time structure requirements; … Define the accelerator specifications –Beam parameters –Operation modes (cw, pulsability, set-up mode, multitasking…) –Accelerator characteristics Provide a first consistent layout for the 1 GeV linac and deuteron injector (extraction lines excluded) –Analyse possible different scenarios –Choose the baseline design to be optimized –First simulation of the overall linac layout

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Starting point “The Driver Accelerator” - Report of the EURISOL Driver Accelerator Task Group (2002) Developments in the field during the last two years Other projects –SNS –SARAF –SPES –SPIRAL2 –XADS –RIA – …

A. FaccoEURISOL DS Orsay, 3 Feb th Scenario p,d RFQ Chopper for pulsed beam (duty cycle ~100 %) deuteron extraction at 200 (?) MeV Multi-mode operation with 1 GeV protons serving different lines –1 long pulse (high intensity beam ~5mA) –1 or more short pulses (e.g. 100 μA) p,d rfq chopper 2-gap SC linac 200 MeV 1 GeV Fast deflector Deuteron extraction ? 1.8 A*MeV 176 MHz 352 MHz 704 MHz To RIB sources

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Hot points Possibility of efficient p,d acceleration with the same linac and RFQ using the SARAF approach (not yet considered in the EURISOL Report of 2002) Possibility of pulsed proton beam for multi-mode running (e.g. 100 μA on direct targets + 4 mA on a 2-stage target ) –Necessity of a beam chopper at ~2 MeV –Necessity of a fast deflector at 1 GeV

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Breakdown of work (per sub-task) Overall design (all participants) –Definition of the main design parameters and operation modes MeV section (LNL, IPNO, TRIUMF) –technical design of the LEBT –layout of the MEBT, including the section for deuteron injection –Preliminary layout and beam dynamics of the MeV p linac based on 2-gap SC resonators: 1) coaxial HWRs (INFN, TRIUMF) 2) Spoke cavities (IPNO) –Pulsed operation capability –Proton source, RFQ Testing of the INFN proton source and LEBT (INFN)

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Breakdown of work (per sub-task) cont. 100 MeV-1 GeV section (CEA Saclay) –Analysis of SC linac schemes suitable for EURISOL (ESS, SNS, 3-4 gap Spoke cavities for the MeV section,…) –Preliminary layout for EURISOL (no extraction lines) 0-40 MeV deuteron injector (SOREQ, INFN, TRIUMF) –1st preliminary layout and beam dynamics of the 0-40 MeV d linac, including diagnostics choices, looking for 5 mA d and p beam –Pulsed operation capability Analysis of a 1 GeV p,d SC linac with a dual purpose 176 MHz RFQ (SOREQ, INFN)

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Breakdown of the work (per participant) All participants –Definition of the main design parameters and operation modes INFN –technical design of the proton LEBT (with IPNO) –layout of the MEBT –layout and beam dynamics of the MeV p linac with coaxial HWR –Testing of the INFN proton source and LEBT for the 352 MHz RFQ (INFN) –Analysis of a 1 GeV p,d SC linac with a dual purpose 176 MHz RFQ (with SOREQ) IPNO –1st technical design of the proton LEBT (with INFN) –1st layout and beam dynamics of the MeV p linac with Spoke cavities CEA –Analysis of already studied MeV SC linac schemes, including the 3-Spoke alternative –Preliminary MeV layout for EURISOL (no extraction lines) SOREQ –1st layout of the deuteron injector, including source and LEBT, based on 176 MHz HWRs (with INFN) –Analysis of pulsed operation possibilities –Analysis of a 1 GeV p,d SC linac with a dual purpose 176 MHz RFQ (with INFN) TRIUMF –Calculations of the realistic field distribution in 352 and 176 MHz HWR cavities and in superconducting solenoids for the 100 MeV linac

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Provisional budget for each participant LNLCEAIPNO TravelLNL TRIUMF SOREQ Consumable00 - personnel Requested budget for the first year : €44000 for travel and personnel

A. FaccoEURISOL DS Orsay, 3 Feb 2005 Communication within the task –1st meeting: March 30, 2005 at Legnaro (tentative date) –2nd meeting: 1 day in November at Orsay –Communication through the standard channels Provisional hiring of personnel –INFN-LNL 1 Mechanical engineer 10 m*m