New Achievements at TRIUMF and Future Plansepaper.kek.jp/c07/TALKS/TUYCR01.pdf · ♦ 3...
Transcript of New Achievements at TRIUMF and Future Plansepaper.kek.jp/c07/TALKS/TUYCR01.pdf · ♦ 3...
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New Achievements at TRIUMF and Future Plans
P. W. Schmor & Accelerator TEAMISAC/TRIUMF
Cyclotrons 2007
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TRIUMF
ISAC
CYCLOTRON
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TRIUMF Driver
500 MeV H- Cyclotron
Provides Simultaneous,Independent, Variable Energy,Protons to Multiple Locations
Routinely Accelerates 275 µA
Capable of 400 µA
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BL2A is ISAC beam line
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TRIUMF Upgrades/Refurbishment[MOPPRA05]
l CYCLOTRON♦ RF Systems (to reduce yearly down time)♦ Vacuum (to reduce yearly down time, improve vacuum &
reduce residual radiation with increased current)♦ Solid Target Facility (to improve servicing & power handling
capability)♦ Cabling (replace radiation damaged cables)♦ Ion Source & Injection System (Enhance high current ability)♦ Beam Improvements (Meet ISAC requirements of quality &
stability)l ISAC
♦ Rotating proton beam on target♦ High Beta completion & experimental installation
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4.5K and 80K Plumbing, Rev. 1
B-20
80KCyclotron
Compressor
4.5K
He
LN2
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Many Vault Cables have Radiation damage & replacements must be carried out without moving
other damaged cables
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Cable Tray System for Cyclotron Re-cabling Project
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Inductive Beam Position Monitor[WEPPRB17]
l Proton current instabilities at the ISAC targets is magnified in observed isotope flux and is both a tuning & experimental rate concern
l This monitor is to achieve better control of beam size, position, and current on ISAC targets.
l Inductive loop beam position monitor. The monitor is built for high current operation. It is a non-intercepting device capable of measuring beam position with a 0.1mm relative resolution and 0.5mm absolute accuracy. It will be used for continuous monitoring of the high current beam profile and current. It is intended to be used for beam position feedback to ensure beam position stability on ISAC Targets.
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ISAC Accelerators
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ISAC I
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ISAC I & IIl ISAC (ISOL + ACCELERATORS)
♦ ISAC-I• Funded in 1995 [1995-2000]• Low Energy
∗ E ≤ 60 keV & Amax ≈ 240• First RIB Experiment in November 1998
• ‘High’ Energy (Accelerated with RFQ & DTL) ∗ Variable Energy from 0.15 to 1.8 MeV/u for q/A ≥
1/30• First Beam in December 2000
♦ ISAC II• Funded in April 2000 [2000-2005-2010]
• Variable Energy from 1.5 to 6.5 MeV/u for A ≤ 150• First Beam December 2006 (4.3 MeV/u)
♦ Upgrades Proposed for 2010-2015
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ISAC Target & Ion Sources
Pierre Bricault
[MOZCR02]
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ISAC-I Acceleratorq OLIS q Stable beams
q LEBTq All-electrostatic (2 keV/u)q 11.8 MHz multi-harmonic pre-
buncherq 35 MHz cw RFQq E=2à153 keV/uq A/q<=30
q MEBTq Stripping foilq 35 MHz rebuncher
q 105 MHz cw Variable Energy DTLq E=0.15-1.8 MeV/uq A/Q<=6
q HEBTq Diagnostic sectionq 11.8/35 MHz rebunchers
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ISAC 35MHz Split-ring RFQ
Accelerates ions with A/q<=30 Accelerates ions with A/q<=30 from 2 keV/u to 150 keV/ufrom 2 keV/u to 150 keV/u
ISAC 106MHz Separated Function DTL
Accelerates ions with A/q<=6 to Accelerates ions with A/q<=6 to final energies fully variable from final energies fully variable from 0.15<E<1.8 MeV/u0.15<E<1.8 MeV/u
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ISAC II
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ISAC I → ISAC IIPHYSICS NEEDS HEAVIER MASSES
l Ion Source♦ Many 1 ≤ A ≥ 150 are Ionized but with q = 1
l MASS SEPARATOR♦ Selects a Particular 1/A where A ≤ 240 with energy ≤ 60 keV
l Accelerators♦ RFQ Requires q/A ≥ 1/30♦ DTL & SC LINAC Requires q/A ≥ 1/6
l CHARGE STATE BOOSTER (CSB)♦ Required to accelerate masses greater than A = 30♦ Boosts Isotope Charge from 1+ to n+♦ Goal is to efficiently achieve q/A ≈ 1/6♦ Charge Boosting Time Should be Small Compared to
Isotope Lifetime♦ Installation in 2008
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Schematic of theISAC Facility
AtTRIUMF
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Charge State Booster& Mass Selector LocationIn Mass Separator Cave
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ISAC-II (Phase I - Medium Beta Section)Commissioned in 2006
E=4.5 MeV/u A/q=6
S0
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ISAC-II Building
f1/2=25Hzf1/2=25Hzf1/2=25Hz
Compressor Room Buffer Tanks
Refrigerator RoomLinac Distribution
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Medium Beta CryomodulesAssembly
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Qo vs Ea from single cavity tests
1.00E+07
1.00E+08
1.00E+09
1.00E+10
0 2 4 6 8 10 12Ea, MV/m
Prototype
#1#2#3
#4#5#6
#7#8#9
#10#11#12
#13#14
#15#16#17
#18#19#20
7W
ISAC-IIspecifications:Ea=6MV/mP=7W
Single Cavity Performance Summary
Ep@7W
010
2030
40
50
Prototy
peEZ 0
1EZ 0
2EZ 03
EZ 04EZ 05
EZ 06EZ 0
7EZ 0
8EZ 0
9EZ 1
0EZ1
1EZ 1
2EZ 13
EZ 14EZ 1
5EZ 16
EZ 17EZ 1
8EZ 1
9EZ 2
0
Cavity
Ep, M
V/m •Cavities tested initially in
single cavity cryostat
•Average peak surface field at operating power of 7W is now Ep=38MV/mcorresponding to a voltage gain of 1.4MV/cavity and a magnetic field of Bp=75mT and a gradientEa=7.5MV/m
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Superconducting LINAC
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SEBT Beamline
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Medium Beta
Energy Measurement – Time of Flight (TOF)
9.07m
TOF1 TOF2
85nsec
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12C3+ Acceleration - May 2, 2006
0
0.2
0.4
0.6
0.8
1
1 2 3 4 5 6 7
E (MeV/u)
Dis
trib
utio
n (A
U)
SCB4
SCB3SCB2SCB1OffSCB5
Energy after each cryomodule for C12(3+) with an injection energy of 1.5Mev/U.
SCB1 SCB1-2SCB1-3
SCB1-4
SCB1-5
OFF
Milestone: Acceleration April 8, 2006
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Beam Profile of full energy beam
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SEBT2 & SEBT3 Beamlines
SEBT2
SEBT3
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January 05, 2007First RIB in ISAC II
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Near Term Plans for ISAC I & II
l Complete Installation of the ISAC II experimental stations & Beamlines♦ TIGRESS, EMMA, Heracles, ..
l Operation with Actinide Targets♦ Initial tests in 2008♦ Obtain fission produced neutron rich isotopes
l Completion of ISAC II Accelerators♦ High Beta cavities planned for 2009♦ To reach design energy of 6.5 MeV/u for all masses
l Installation of Charge State Booster in 2008♦ Heavier masses can be accelerated
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Stage 1 - 2009
E=6.5MeV/u A/q=7
S0
CSB
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TRIUMF/ISAC
Beyond ISAC II → ISAC III
(2010 -2015)
Proposals & Plans
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ISAC Future Plan/Proposal
l The TRIUMF cyclotron driver could provide another proton beam (~ 200 µA ) from a presently unused beam line (BL4AN) to new target stations,
l These target stations would then provide a place to perform systematic development of exotic beams,
♦ Ion Source development,
♦ Characterization of new targets
l An additional Radioactive Nuclear Beam could be simultaneously accelerated from these new target stations for experiment
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ProposedNew Driver Beam
New Targets &Simultaneous
Post Acceleration
ISAC 2015?ISAC 2015?
ISAC 2015Spallation?
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ISAC = ISOL &POST-ACCELERATORS
(2007)
Accelerated RIB Experiments@ 1.5 MeV/u in ISAC I (2001)
TRIUMF500 MeVCyclotronDRIVER
Thick/Hot Target
Ion Source
Beam Dump
ISAC I (1998)
ExperimentsISAC II (2007)
DTL1
RFQ
Med βSCRF
A/q≤30
1A
2C
2A4A
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ISAC = ISOL &POST-ACCELERATORS
(2008)
Accelerated RIB Experiments@ 1.5 MeV/u in ISAC I (2001)
TRIUMF500 MeVCyclotronDRIVER
Thick/Hot Target
Ion Source
Beam Dump
ISAC I (1998)
ExperimentsISAC II (2007)
DTL1
RFQ
Med βSCRF
A/q≤30
1A
2C
2A4A
2008
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ISAC = ISOL &POST-ACCELERATORS
(2009)
Accelerated RIB Experiments@ 1.5 MeV/u in ISAC I (2001)
TRIUMF500 MeVCyclotronDRIVER
Thick/Hot Target
Ion Source
Beam Dump
ISAC I (1998)
ExperimentsISAC II (2007)
DTL1
RFQ
Med βSCRF
A/q≤30
1A
2C
2A4A
CSB
2008
High βSCRF
2009
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ISAC = ISOL &POST-ACCELERATORS
(2010+)
Accelerated RIB Experiments@ 1.5 MeV/u in ISAC I (2001)
TRIUMF500 MeVCyclotronDRIVER
Thick/Hot Target
Ion Source
Beam Dump
ISAC I (1998)
ExperimentsISAC II (2007)
DTL1
RFQ
Med βSCRF
A/q≤30
1A
2C
2A4A
CSB
2008
High βSCRF
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ISAC = ISOL &POST-ACCELERATORS
(2015-)
Accelerated RIB Experiments@ 1.5 MeV/u in ISAC I (2001)
TRIUMF500 MeVCyclotronDRIVER
Thick/Hot Target
Ion Source
Beam Dump
ISAC I (1998)
ExperimentsISAC II (2007)
DTL1
RFQ
DTL2
High βSCRF
CSB
Med βSCRF
Low βSCRF
S1
A/q≤302008
RFQ
1A
2C
2A4A
2008
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ISAC = ISOL &POST-ACCELERATORS
(2015)
Accelerated RIB Experiments@ 1.5 MeV/u in ISAC I (2001)
TRIUMF500 MeVCyclotronDRIVER
Thick/Hot Target
Ion Source
Beam Dump
ISAC I (1998)
ExperimentsISAC II (2007)
DTL1
RFQ
DTL2
High βSCRF
CSB
Med βSCRF
Low βSCRF
S1
A/q≤302008
RFQ
1A
2C
2A4A
2008
50 MeV ElectronPhoto Fission Target
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SUMMARYl CYCLOTRON DRIVER
♦ PROVIDES MULTIPLE BEAMS FOR MESON PRODUCTION, MEDICAL ISOTOPE PRODUCTION, PROTON IRRADIATION FACILITY & ISAC
• REFURBISHMENT PROGRAMME IN PLACE TO ENSURE THE CYCLOTRON REMAINS RELIABLE & CAPABLE OF HIGH CURRENT OPERATIONAL DEMANDS
♦ CAPABLE OF PROVIDING SIMULTANEOUS, VARIABLE INTENSITY, STABLE, MULTIPLE HIGH POWER BEAMS TO ISOL TARGETS
• EXTRACTION BY STRIPPING PERMITS EASY ADJUSTMENT OF PRIMARY BEAM POWER TO MEET TARGET REQUIREMENTS
l ISAC♦ ISAC I & II IN OPERATION
• ISAC II OPERATIONAL AT 4.3 MeV/u NOW & 6.5 MeV/u IN 2009
♦ 3 SIMULTANEOUS INDEPENENT RIBs PROPOSED FOR FUTURE
l ELECTRON DRIVER FOR PHOTOFISSION PROPOSED♦ 3rd SOURCE OF RIB FOR ISAC♦ COMPLIMENTARY TO SPALLATION PRODUCED RIBs