il progetto spes: produzione di fasci di ioni radioattivi ai laboratori nazionali di ... ·...
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SPES Target Group
A. Andrighetto - SIF2012
Il progetto SPES: produzione di fasci di ioni radioattivi ai
Laboratori Nazionali di Legnaro.
Alberto Andrighetto
LNL-INFN
Congresso SIF 2012 - Napoli
SPES Target Group
A. Andrighetto - SIF2012
Talk OverviewTalk Overview
--IntroductionIntroduction
-- The SPES layout & devices.The SPES layout & devices.
-- The The production target (TIS).production target (TIS).
-- The TIS R&D activities.The TIS R&D activities.
-- Final remarks. Final remarks.
SPES Target Group
A. Andrighetto - SIF2012
The INFN Legnaro Laboratory
Nuclear Physics - Fundamental Interactions – Interdisciplinary Physics - Detector Techniques - Accelerator Design & Technology - Superconductivity
Electrostatic Electrostatic acceleratorsaccelerators
Superconducting radiofrequency acceleratorsSuperconducting radiofrequency accelerators
50th LNL birthday!
SPES is the LNL future…
19621962
19721972 19841984
19941994
SPES Target Group
A. Andrighetto - SIF2012
REX-ISOLDE, CERN delivering ISOL beams since 2001
GSI, Darmstadt, Germany delivering IF beams since 1990
SPES, Legnaro, Italy ISOL beams
EXCYT, Catania, Italy ISOL beams
GANIL, Caen, France delivering IF beams since 1984 (SPIRAL) ISOL beams since 2001
SPIRAL II ISOL beams
HIE-ISOLDE ISOL beams
FAIR IF beams
The RIB European Scenario
SPES Target Group
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The Excyt LNS facility
The INFN RIB ISOL Facility running since 2002
Cyclotron k800: RIB driver
SPES Target Group
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The Excyt LNS RIB facility
15 MV Tandem post-accelerator Target Front End
Target Chamber Unit
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a
b d
g
The SPES staging
The SPES projectThe SPES project Goal: to expand in the future the nuclear physics tests at LNL SPES is: 1) A second generation ISOL facility (for neutron-rich ion beams)
2) An interdisciplinary research center (for p,n applications)
SPES Target Group
A. Andrighetto - SIF2012
ORNL calculation
Nuclear Physics with RIB - High angular momentum
- Deformed nuclei
- Correlation (pairing)
- Shell evolution
Nuclear Astrophysics with RIB - Heavy elements origin (r,p,s process)
- Stellar explosion
- Neutron stars
- X-ray burst and supernovae
Physics domains @ SPES
Possibility to produce more than 500 isotopes …
SPES Target Group
A. Andrighetto - SIF2012
Physics nuclear reactions @ SPES
SPES RIB
SPES Target Group
A. Andrighetto - SIF2012
Spes (new) building Exp. Hall 3
ALPI building Cyclotron
RIB target stations
HRMS
Charge Breeder
RFQ
Building design & study of beam transport to ALPI are completed
Beam Cooler
SPES project status:
SPES Target Group
A. Andrighetto - SIF2012
The SPES main devices
DriverDriver::
‘Commercial’ cyclotron‘Commercial’ cyclotron
Post Post Accelerator:Accelerator:
PiavePiave-- AlpiAlpi existing existing complexcomplex
ALPI
PIAVE
Production Production Target:Target:
NEW CONCEPT NEW CONCEPT
((MultiMulti--foil foil UCxUCx target)target)
Target-Ion Source Complex:
- optimized for 8kW beam power
- Eproton = 40 MeV for RIB
- 10^13 fission/s.
RIB manipulation stageRIB manipulation stage
- Mass Separator (WF)
- Beam Couler
- HRMS
- Charge Breeder
- RFQ
SPES Target Group
A. Andrighetto - SIF2012
- The driver - The RIB manipulation - The post accelerator - The production target
SPES Target Group
A. Andrighetto - SIF2012
Cyclotron
load work per year
- 2 weeks per shift
- Beam preparation 2 days
- Beam on target 12 days
- Beam on target 280 hours per shift
- Expected Beam on target: more than
10000 hours per year (RIB+appl.)
SPES Target Group
A. Andrighetto - SIF2012
Status of Cyclotron
70p Model.
70p Magnet in Japan (Dec 2011)
Transfer to Marmen (Canada) for final Machining (March 2012)
Main Dimensions Main Dimensions Diameter = 4.5 m
Height= 1.7 m Weight = 210 tons
SPES Target Group
A. Andrighetto - SIF2012
- The driver - The RIB manipulation - The post accelerator - The production target
SPES Target Group
A. Andrighetto - SIF2012
Tar
get
Wien Filter
RFQ
Co
oler
Dipole
Acc. Column Acc. Column Dipole Multipole Dipole
Beam transport from TIS to HRMS
Dipole
SPES Target Group
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HRMS CB
Beam transport from HRMS to ALPI
CB NEW RFQ
RFQ
QWR1 QWR2 CR3-CR4
SPES Target Group
A. Andrighetto - SIF2012
- The driver - The RIB manipulation - The post accelerator - The production target
SPES Target Group
A. Andrighetto - SIF2012
ALPI layout
ALPI Low-Beta Cavity Upgrade
Starting situation: 20 QWRs in 5 cryostats
Ea~ 3 MV/m -> total accelerating
voltage ~ 11 MV After upgrade: 24
QWRs (6 cryostats) Ea = 5 MV/m (upgraded
rf system) -> total accelerating
voltage ~ 21 MV
CR03 – prototype work completed
Optimum betaOptimum beta
βo = 0.056
βo = 0.11
βo = 0.13
Motivation: to achieve at least 10 MeV/A up to A/q=7 most beam species (up to the heaviest) and higher beam transmission
SPES Target Group
A. Andrighetto - SIF2012
22Ne4+
40Ar9+
84Kr18+
120Sn21+
132Xe27+
197Au30+
80Ga17+
121Sn21+ 95Kr18+
129In21+
143Xe22+
132Sn21+
132Sn19+
SPES Final Performance
SPES Target Group
A. Andrighetto - SIF2012
- The driver - The RIB manipulation - The post accelerator - The production target
SPES Target Group
A. Andrighetto - SIF2012
The SPES TIS complex
ion source
SPES
production
target
transfer line proton
beam
1+
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Target complex – disc & container
UCx diskwindow dumper
box
proton
beam
Temperature distribution [°C] (ANSYS ®)
SPES Target Group
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ILine= 200A -> 600A max
ITarget= 700A -> 1200A max
Target & ion source
SPES Target Group
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The SPES off-line Front end (made in collaboration with INFN-MI , INFN-PV, INFN-BO)
60 kV platform
SPES Target Group
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The TIS R&D activitiesThe TIS R&D activities
SPES Target Group
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The TIS SPES Laboratories
HT LNL Lab Test Bench LNL Lab
Carbide Chemistry LNL Lab
UCx Chemistry PADOVA Lab
Laser PAVIA Lab New ‘class A’ LNL Lab
SPES Target Group
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Target production Study of the target porosimetry on the isotopes production yield
2010 Test Standard UCX
2011 Test Low density UCX
2012 Test Medium density UCX
2010 2011 2012
Density (g/cm³)
4.25 2.59 6.38
Diameter (mm)
12.50 13.07 12.91
Thickness (g/cm²)
0.41 0.41 0.41
Calculated porosity
(%) 58 75 37
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A. Andrighetto - SIF2012
Beam from Tandem Accelerator
Beam Diagnostics
Dipole Magnet
M/DM = 2000 Moving Tape System
and g-ray Detector
Target / Ion Source
HRIBF: On-Line TIS Testing Facility
(low intensity (<50 nA) tests of RIB production targets)
SPES Target Group
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Experimental tests at HRIBF
2010 Test Standard UCX
2011 Test Low density UCX
2012 Test Medium density UCX
Irradiation by 40 MeV, 50 nA proton beam, ionization with plasma ion source
1 10 100 1000 1000010
4
105
106
107
108
Yie
ld (
/sec
/A
)
T1/2
(s)
Br yields 2000°C
Br yields 1800°C
Br yields 1600°C
Br
1 10 100 1000 1000010
5
106
107
108
Yie
ld (/
sec/
A)
T1/2
(s)
Br yields 2000°C
Br yields 1800°C
Br yields 1600°C
Br
• Targets tested at 3 different T:
2000°C, 1800°C and 1600°C
• 20 elements, about 80 isotopes collected
• Yield vs. half-life characterization
shipped to ORNL for
test (end of 2012?)
SPES Target Group
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B4C for the production of Be
B4C
Free C
SPES Target Group
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Surface Ion source
1 2
H He
3 4 5 6 7 9 10
Li Be B C N O F Ne
11 12 13 14 15 16 17 18
Na Mg Al Si P S Cl Ar
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
87 88 89 104 105 106 107 108 109 110 111 112
Fr Ra Ac Rf Db Sg Bh Hs Mt
8
Not extracted
Surface Ionization Surface Ionization MethodMethod
Laser beam
Laser with SIS
Photo Ionization MethodPhoto Ionization Method
Plasma Ionization MethodIonization Method
RIB ionization methods:
Main fission (p-> 238U) fragments Plasma Ion source
Selective method
Very selective method
Unselective method
SPES Target Group
A. Andrighetto - SIF2012
Target and Ion Sources
ionizing cavity
connector
plate
support
thermal screen
Hot cavity: - Optimized for Surface Ionization (Re inner surface) - Optimized for Laser Ionization (Ta, naked)
SPES Target Group
A. Andrighetto - SIF2012
Target and Ion Sources
> The Plasma Ion Source (PIS) adopted for the SPES facility
Starting configuration Hybrid MK5 (CERN) – EBPIS (ORNL)
SPES Target Group
A. Andrighetto - SIF2012
Target and Ion Sources
> Emittance measurements for SIS and PIS
SIS (Cs beam) PIS (Ar beam)
SPES Target Group
A. Andrighetto - SIF2012
LPX200 XeCl excimer laser
Laser test at LNL with excimer Aluminum ionization with a single wavelength
Laser beam
Pulse. 15 ns λ=308 nm
Al photo ionization
The laser beam shape is focalized into hot cavity
of 3 mm. diameter and 6 m. far away
Hot Cavity Laser beam (phosphorescence on plastic dump)
SPES Target Group
A. Andrighetto - SIF2012
PAVIA Laboratory setup
1 Pump Laser:
• Quanta System G.Y.L 101/102
Nd:YAG laser
Impulse Energy up to 300mJ
Repetition rate max 10Hz
Complete laser photoionization system structure
3 Tuneable Dye Laser :
• Lambda Physik FL3002E and Lambda
Physik LPD3002E
Bandwidth 0,2 cm-1
Repetition rate according to pump
Goal: Build up a complete 3λ ionization scheme
Since April 2010: the 3 tuneable laser are ON
SPES Target Group
A. Andrighetto - SIF2012
The target chamber handling Two systems are foreseen in order to increase the handling security level
Target Front End
Horizontal device
Vertical device
Target chamber unit
SPES Target Group
A. Andrighetto - SIF2012
Handling system test bench at LNL
Vertical test bench Horizontal test bench
SPES Target Group
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Wien Filter on the FE Laboratory (New set up with mass separator – May’12)
FC + Slit
WF Front End EM FC +
Beam Profiler
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The on-line Front end at LNS
For RIB production test using LNS Cyclotron
Proton; E= 40 MeV
I = 50 nA
LNS K800 Superconducting Cyclotron
Proton from K800
Cyclotron
SPES Target Group
A. Andrighetto - SIF2012
ConclusionConclusion
SPES Target Group
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SPES collaborations
SPES Target Group
A. Andrighetto - SIF2012
SPES possible Schedule
SPES Target Group
A. Andrighetto - SIF2012
Letters of Intent: under discussion to select first-day-exp.
ISOL Target and Ion Source: working in off-line laboratory.
Layout for pre-acceleration: defined.
Authorizations ready for cyclotron operation.
Contract for cyclotron: signed November ‘10, final design
accepted (June ’11), cyclotron under machining.
Building project: ready, financed (June ‘12), bid on the way.
Phase β and γ partially financed (July ‘12)
Expected ground breaking Feb. 2013.
Letters of Intent: under discussion to select first-day-exp.
ISOL Target and Ion Source: working in off-line laboratory.
Layout for pre-acceleration: defined.
Authorizations ready for cyclotron operation.
Contract for cyclotron: signed November ‘10, final design
accepted (June ’11), cyclotron under machining.
Building project: ready, financed (June ‘12), bid on the way.
Phase β and γ partially financed (July ‘12)
Expected ground breaking Feb. 2013.
Current status and overview
SPES Target Group
A. Andrighetto - SIF2012
The SPES-TIS group Since 2004: 45 thesis performed in the frame of target SPES activities