SC ISOL Linac of KoRIA Tae-Sun Park (SKKU).

Slides:



Advertisements
Similar presentations
Solenoid-Based Focusing Lens for a Superconducting RF Proton Linac Presentation prepared for AEM 11/08/20101I. Terechkine.
Advertisements

SRF Results and Requirements Internal MLC Review Matthias Liepe1.
J. Rodnizki SARAF, Soreq NRC HB2008, August, 2008 Nashville TN Lattice Beam dynamics study and loss estimation for SARAF/ EURISOL driver 40/60 MeV 4mA.
Technical aspects of the ATLAS efficiency & intensity upgrade Peter N. Ostroumov ATLAS Users Workshop, August 8-9, 2009.
Low Emittance RF Gun Developments for PAL-XFEL
DTL: Basic Considerations M. Comunian & F. Grespan Thanks to J. Stovall, for the help!
Simulation of direct space charge in Booster by using MAD program Y.Alexahin, A.Drozhdin, N.Kazarinov.
CLARA Gun Cavity Optimisation NVEC 05/06/2014 P. Goudket G. Burt, L. Cowie, J. McKenzie, B. Militsyn.
Accelerator Science and Technology Centre Extended ALICE Injector J.W. McKenzie, B.D. Muratori, Y.M. Saveliev STFC Daresbury Laboratory,
Beam Dynamics and Linac Simulation Petr Ostroumov Fermilab Accelerator Advisory Committee May 10 th – 12 th, 2006.
Beam breakup and emittance growth in CLIC drive beam TW buncher Hamed Shaker School of Particles and Accelerators, IPM.
Design Optimization of MEIC Ion Linac & Pre-Booster B. Mustapha, Z. Conway, B. Erdelyi and P. Ostroumov ANL & NIU MEIC Collaboration Meeting JLab, October.
Project X RD&D Plan Beam Transfer Line and Recycler Injection David Johnson AAC Meeting February 3, 2009.
Aaron Farricker 107/07/2014Aaron Farricker Beam Dynamics in the ESS Linac Under the Influence of Monopole and Dipole HOMs.
R. Tiede, Institute for Applied Physics (IAP), Goethe-University Frankfurt 1 42nd ICFA Advanced Beam Dynamics Workshop on High-Intensity, High-Brightness.
July LEReC Review July 2014 Low Energy RHIC electron Cooling Jorg Kewisch, Dmitri Kayran Electron Beam Transport and System specifications.
The Introduction to CSNS Accelerators Oct. 5, 2010 Sheng Wang AP group, Accelerator Centre,IHEP, CAS.
Nufact02, London, July 1-6, 2002K.Hanke Muon Phase Rotation and Cooling: Simulation Work at CERN new 88 MHz front-end update on cooling experiment simulations.
Concept Preliminary Estimations A. Kolomiets Charge to mass ratio1/61/8 Input energy (MeV/u) Output energy (MeV/u)2.5(3.5) Beam.
Marcel Schuh CERN-BE-RF-LR CH-1211 Genève 23, Switzerland 3rd SPL Collaboration Meeting at CERN on November 11-13, 2009 Higher.
Slide 1 of 10Matthew Fraser – CI MEW Meeting, 25 th October 2010.
A.Saini, K.Ranjan, N.Solyak, S.Mishra, V.Yakovlev on the behalf of our team Feb. 8, 2011 Study of failure effects of elements in beam transport line &
1 Project X Workshop November 21-22, 2008 Richard York Chris Compton Walter Hartung Xiaoyu Wu Michigan State University.
Linac Design: Single-Spoke Cavities.
Superconducting Magnet, SCRF and Cryogenics Activities at VECC *, Kolkata Shekhar Mishra Rakesh Bhandari *Department of Atomic Energy, Government of India.
August 8, 2007 AAC'07 K. Yonehara 1 Cooling simulations for Muon Collider and 6DMANX Katsuya Yonehara Fermilab APC MCTF.
Muons, Inc. Feb Yonehara-AAC AAC Meeting Design of the MANX experiment Katsuya Yonehara Fermilab APC February 4, 2009.
1 Superconducting linac design & associated MEBT Jean-Luc BIARROTTE CNRS-IN2P3 / IPN Orsay, France J-Luc Biarrotte, 1st Myrrha design review, Brussels,
DTL: Basic Considerations M. Comunian & F. Grespan Thanks to J. Stovall, for the help!
Slide 1 of 28 Matthew Fraser – HIE-ISOLDE Review Meeting, 15 th June 2009.
Ion Accelerator Activities at VECC
Review of Alignment Tolerances for LCLS-II SC Linac Arun Saini, N. Solyak Fermilab 27 th April 2016, LCLS-II Accelerator Physics Meeting.
Preservation of Magnetized Beam Quality in a Non-Isochronous Bend
Orsay January 2008 ‹#› Post-accelerator Beam Dynamics Last results for beam dynamics on MEBT line and superconducting LINAC Joint Meeting Orsay 7 th Patrick.
HIE ISOLDE Linac Short Technical Description W. Venturini Delsolaro Material from: L. Alberty, J. Bauche, Y. Leclerq, R. Mompo, D. Valuch, D. Voulot, P.
Overview of the RISP SCL
Bunching system for SPES project
Preliminary result of FCC positron source simulation Pavel MARTYSHKIN
Coupler RF kick simulations.
Physics design on the main linac
IF Separator Design of RAON
Progress in the Multi-Ion Injector Linac Design
NC Accelerator Structures
Physics design on Injector-1 RFQ
Acceleration of RIB using linacs
Design of the MANX experiment
CEPC injector high field S-band accelerating structure design and R&D
A. Plastun¹, B. Mustapha, Z. Conway and P. Ostroumov
Beam dynamics of RAON accelerator system
1- Short pulse neutron source
EffiCAS Efficient Facility for Ions at CAS
Overview Multi Bunch Beam Dynamics at XFEL
HIE-LINAC status report
CEPC Injector Damping Ring
Pulsed Ion Linac for EIC
November 14, 2008 The meeting on RIKEN AVF Cyclotron Upgrade Progress report on activity plan Sergey Vorozhtsov.
November 7, 2008 The meeting on RIKEN AVF Cyclotron Upgrade Progress report on activity plan Sergey Vorozhtsov.
MEBT1&2 design study for C-ADS
Physics Design on Injector I
Passive harmonic cavities for bunch shortening
Studies on orbit corrections
Challenges, Progress and Plans of SRF CH-Structures
DTL M. Comunian M. Eshraqi.
Operational Experience with LCLS RF systems
ERL Director’s Review Main Linac
Status of the JLEIC Injector Linac Design
DTL for MEIC Ion Injection
Feasibility of Recuperation of Magnets in Decommissioned Storage Rings
Multi-Ion Injector Linac Design – Progress Summary
RF system for MEIC Ion Linac: SRF and Warm Options
Presentation transcript:

SC ISOL Linac of KoRIA Tae-Sun Park (SKKU)

Layout of ISOL Linac ISOL system Frequency = 70 MHz E=0.3 MeV/u, A/q ≤ 8 E≥17.5 MeV/u, A/q ≤ 8 Frequency = 70 MHz Energy for charge stripper (of IFF Linac) ≥ 17.5 MeV/u Max. A/q value: 8 Consists of 2 kinds of SC quarter wave resonators (QWRs) 24 cavities of βopt= 4 % 88 cavities of βopt= 10 % E≥17.5 MeV/u, A/q ≤ 3

ISOL Linac Design Goals Beam energy: Input from RFQ: E = 0.3 MeV/u, A/q ≤ 8 for low-energy ISOL exp.: E ≥ 2.1 MeV/u, A/q ≤ 8 for high-energy ISOL exp.: E ≥ 17.5 MeV/u, A/q ≤ 8 after charge stripper: E ≥ 17.5 MeV/u, A/q ≤ 3 Available beam energy [MeV/u] w.r.t A/q Cf) Available beam energy: From ~0.16 MeV/u to the above curves

ISOL Linac Design Goals Good beam quality Minimize emittance growth Minimize beam loss Multi-charge acceleration Available beam current of “rare” isotopes : increased more than two times |Δq/q| ≤ 5 % Energy variation 0.16 ≤ E [MeV/u] ≤ 17.5 High feasibility Simplified cavity shape, ample margins in cryostat design Operating temperature : 4.5 K (rather than 2 K)

Cryo-modules x 11 x 4 βopt=0.04 QWR βopt=0.10 QWR

Cryo-modules Summary of overall specifications βopt =0.04 βopt =0.10 Total Number of SC cryo-modules 4 11 15 Number of SC cavities 6*4=24 8*11=88 112 Number of solenoids 3*4=12 3*11=33 45 Total length ∼ 15 m ~ 75 m ~ 90 m

Low-β SC QWRs βopt = 0.040 (βG = 0.036), ϕ=172 mm, bore radius=15 mm

High-β SC QWRs βopt = 0.10 (βG = 0.091), ϕ=340 mm, bore radius=15 mm

Ez(0,0,z) [MV/m] βopt=0.04 βopt=0.10

TTF curve w.r.t.β Red: A/q=3 Green: A/q=7 Blue: A/q=9

Voltage gain curve w.r.t.β

Beam energy w.r.t. z[m] Red: A/q=3 Green: A/q=7 Blue: A/q=8

Specs of QWRs low-β high-β βopt 4.0% 10.0% f0 (frequency) 70 MHz a0 (bore radius) 15 mm L (diameter of O.C) 172 mm 340 mm V0 (Input) 0.9 MV 2.0 MV Ep 30 MV/m 33 MV/m E0= V0 /L 5.23 MV/m 5.88 MV/m Topt 0.87 0.89 Q0 (@ R=20 nΩ) 0.7 x 109 1.4 x 109 Pdiss(@ R=20 nΩ) 2.2 Watt 4.4 Watt R/Q (with TTF include) 412 Ω 510 Ω

Dipole steering of QWRs Steering: Δy’ [mrad] with respect to β after beam axis shift Dipole steering effect of QWR can be mitigated by Tilting beam port faces Race-track shaped beam port Shifting beam-axis We chose ‘3’ for simplicity, but either ‘1’ or ‘2’ will be used for actual fabrication before beam axis shift By shifting beam axis 0.024 mm and 0.26 mm upward, steering (~0.7 mrad) reduced to ≤ 0.1 mrad

SC Solenoids Two SC (Nb-Ti) solenoids (44 cm and 68 cm long) will be used. XY-correcting coils will be employed Design parameters 1st kind 2nd kind Operating temperature 4.5 K Coil material Nb-Ti Mechanical length 44 cm 68 cm Max field strength 9 Tesla ∫B2 dz 9.7 T2·m 29.2 T2·m Fringe field at neighboring cavity wall ≤ 0.2 Gauss Number of solenoids 12 33

Beam simulation with TRACK code Reference isotope: 132Sn Simulations have been done for Single-charge Typical: 132Sn18+ Highest A/q : 132Sn16+ De-acceleration of 132Sn18+ (E: 0.3 → 0.16 MeV/u) Multi-charge case (132Sn17+,18+,19+ : Δq/q = 5.6 %)

Single-charge case with 132Sn18+ E= 0.3 MeV/u, εnx,y = 0.10 mm mrad, εnz = 5.1 deg/KeV/u E= 18.3 MeV/u, εnx,y = 0.11 mm mrad, εnz = 5.5 deg/KeV/u Synchronous phase φs is set to be - 22°

Single-charge case with 132Sn18+ Transverse & longitudinal emittance Beam envelop (max and rms)

Single-charge case with 132Sn16+, A/q= 8.24 E= 0.3 MeV/u, εnx,y = 0.10 mm mrad, εnz = 5.1 deg/KeV/u E= 17.5 MeV/u, εnx,y = 0.11 mm mrad, εnz = 5.4 deg/KeV/u Synchronous phase φs is set to be - 22°

Single-charge case with 132Sn16+, A/q= 8.24 Transverse & longitudinal emittance Beam envelop (rms)

De-acceleration with 132Sn18+ E= 0.3 MeV/u, εnx,y = 0.10 mm mrad, εnz = 5.1 deg/KeV/u E= 0.16 MeV/u, εnx,y = 0.11 mm mrad, εnz = 5.6 deg/KeV/u Synchronous phase φs is set to be - 160° Field level cavities are adjusted

De-acceleration with 132Sn18+ Transverse & longitudinal emittance Beam envelop (max and rms)

Multi-charge case with 132Sn17+,18+,19+ E= 0.3 MeV/u, εnx,y = 0.10 mm mrad, εnz = 5.1 deg/KeV/u E= 18.3 MeV/u, εnx,y = 0.11 mm mrad, εnz = 64.3 deg/KeV/u Synchronous phase φs is set to be - 22°

Multi-charge case with 132Sn17+,18+,19+ Transverse & longitudinal emittance Beam envelop (max and rms)

MEBT (from RFQ to ISOL Linac) There are many possible different options One example: 3-m long 1-rebuncher system Design of more flexible 2-rebuncher MEBT for multi-charge RIBs is under progress

180°bending section This is to insert ISOL beams into the IFF Linac Consists of two symmetric, achromatic 90° sections

Charge stripping section Charge stripping section is located at the end of ISOL Linac, just before the bending section, with a carbon-foil of thickness 0.3 mg/cm2 Lise++ code has been used for simulation for 132Sn isotope Charge distribution w.r.t. beam energy

Energy [KeV/u] and angular [mrad] struggling w.r.t. foil-thickness At E=17.5 MeV/u, 98 % of beams will be captured (with Δq/q ≤ 5 %)

Trace3D simulation for on-momentum Trace3D simulation for off-momentum (Δp/p= 5 %)

Discussions Some elementary parts of “Conceptual Design of SC ISOL Linac” have been done, but there remain tons of further works to be done: Microphonics issues, tuners, RF power couplers, end-to-end simulations with errors, and so on. To secure successful construction of KoRIA, we need To put much more efforts, To build the lab where we can fabricate/test prototypes of SC cavities as soon as possible, Strong international cooperation, and so on.

Alternatives for overall ISOL-Linac Layout “Option A” is our original choice, which is the simplest choice but most in-efficient (requires huge banding magnets) “Option B & C” are more efficient, but the overall system becomes complicated