DEVELOPMENT STATUS OF GANIL ION SOURCE: GISELE
CERN, 20th February 2013
Jose Luis [email protected]
1st Topical Workshop on Laser Based Particle Sources
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
INDEX
♦ SPIRAL2 FACILITY
♦ RILIS AT SPIRAL2
♦ TEST BENCH SOURCE FOR SPIRAL2: GISELE GISELE LASER SETUP
LISBET TEST ION SOURCE
♦ DEVELOPMENTS LOW WORK FUNCTION MATERIALS
TIME PROFILE MEASUREMENTS
IONIZATION SCHEMES
♦ SUMMARY & OUTLOOK
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
SPIRAL2 FACILITY
Phase 1
LINAC: 33MeV p 40 MeV d 14.5 A MeV HI
Phase 2
RIB Production CaveUp to 1014 fiss./sec.
CIME cyclotron RIB at 1-20
AMeV (up to 9 AMeV for FF)
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
ISOL: Isotope Separation On Line
RIBs: Short T1/2, Rare, All but Pure Fast, Efficient, Universal & Selective!
Production
238UC2H
Q/A
Separation
kV
Ionization
X+
ExperimentCharge BreedingX+ Xn+
Post acceleration
SPIRAL2 FACILITY
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
SPIRAL2 FACILITY
FEBIAD ECR
A = 78
AtExcitedstates
Ionization Potential
E1Ener
gy
0 eV E0
Ion +
E2
EIP
♦ Surface Ion Source
♦ Plasma Ion Source
♦ Resonant Ionization Laser Ion Source (RILIS)♦ Resonant Ionization Laser Ion Source (RILIS)
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
HOT CAVITY SOURCE
CHARACTERISTICS:
~ 0.1%
100%
surf
RILIS AT SPIRAL2
Ion source ExtractorTarget
60 kV
Towards mass separator
+ ion ~10%, up to 40%+ Ionization process is chemically selective- Contamination by surface ions
Typical residence time: 10µsLaser system frequency: 10kHzDoppler broadening @ 2500K: ~5 GHz
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL 7
RILIS AT SPIRAL2
ECR
RILIS: 60% of the Letters of Intent for SPIRAL2 Phase 21er requested beams: Sn, Zn, Ga, Y, In
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
SCHEME:
TEST BENCH SOURCE: GISELE
Mass spectrometer
Window
nx 3
nx 2
Pump laserNd:YAG
75 W, 10 kHz
-
Ti:Sa 3
Ti:Sa 2
Ti:Sa 1
Ion Source
kV
Laser system
Extractionelectrode
Oven
SampleTube
Dipole
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
TEST BENCH SOURCE: GISELE
Laser setup
Laser beam transport, Separator & Ion Source
Dipole
Ion Source
Zn+
Ion Beam
Ti:Sa Lasers
Pump Laser
SHG/THG/FHG
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
GISELE LASER SETUP
3 TUNABLE TI:SA CAVITIES680 < < 1000nmMax power ~ 5W (40ns, 10kHz)Spectral bandwidth ~ 6 GHzTRIUMF Collaboration (Vancouver, Canada)
2 FREQ. CONVERSION CAVITIESSHG: 350 < < 470nm (~1W)THG/FHG: 210 < < 330nm (~200mW)Mainz University Collaboration (Germany)
LASER PUMPNd:YAG 532nm120ns, 5-20kHz, 75W @ 10kHzPhotonics Industry
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
GISELE LASER SETUP
Zn+ Beam & Ga Beam
10000 cm-1
30000 cm-1
50000 cm-1
70000 cm-1
90000 cm-1
Zn
?
3d104s2 1S
3d104s4p 1P°
213nmOn going:New ionization scheme for ZnTest of 2 & 3 step Sn scheme
June 2012
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
ON LINE RILIS AT SPIRAL2
Production module
UCx Tarjet
Extration electrode
Laser beams
Ionization tube
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
LISBET: Laser Ion Source Body using Efficient Techniques
LASER ION SOURCE TEST FOR SPIRAL2
Reservoir
Ionization tube
Transfertube
Zn & Sn ionization efficiencyElbow shape source
New ceramic ionization tubeElectric field to reduce “impurities”
Extraction electrodeShielding
+
+- -
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
LOW WORK FUNCTION STUDY
REDUCTION OF CONTAMINANTS
Low work function materials Reduce surface ionization of isobars & molecular sidebands
POSSIBLITIES:♦ Metallic ♦ Carbides♦ Borides♦ Impregnations
New low work function materials: CarbidesZrC, TaC, HfC, TiC (Tm ~3500ºC)
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
TIME PROFILE MEASUREMENTS
MEASUREMENT SETUP
Liu, Nuclear Instruments and Methods in Physics Research B 269 (2011) 2771–2780
TNT2 Card
Lettry, Review of Scientific Instruments. Vol 69, Number 2. February 1998.
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
♦ New SPIRAL2 have been presented.
♦ Test bench source is in development: GISELE & LISBET.
♦ Low work function materials will be studied.
♦ Time domain profile of the beam will be measured.
♦ New ionization schemes will be developed.
SUMMARY & OUTLOOK
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
Thank you!
CERN, 20th February 2013. Development Status of Resonant Ion Source at GANIL
SPIRAL2 FACILITY (GANIL)
SPIRAL2 Phase 2Fission products
SHE In-flight S3
In-flight S3
SPIRAL1 New RIB !
ISOL & in-flight RIB from transfer and deep inelastic Reactions
N=Z: SPIRAL2S3 & Phase 2
2012: > 3500 over 8000 nuclei have been observed