1. Sviluppi sui bersagli di produzione e fasci esotici
30/01/2018
Sviluppi sui bersagli di produzione e fasci esotici
previsti
Alberto Andrighetto
LNL-INFN
Roma 31 gennaio 2012

2. ISOL facility scheme
30/01/2018
Breeder

3. The SPES TIS complex
30/01/2018
ILine= 200A
ITarget= 700A

4. The TIS SPES Laboratories
30/01/2018
The TIS SPES Laboratories
HT LNL Lab
Test Bench LNL Lab
UCx Chemistry PADOVA Lab
Carbide Chemistry LNL Lab
Laser PAVIA Lab

5. Main fission (p-> 238U) fragments
SPES n-rich RIB’s
(3 ionization methods, 2 Ion source devices)
30/01/2018
Surface Ion source
Elements with bad volatility (NOT EXTRACTED)
Surface Ionization Method 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
Laser beam
Laser with SIS
Photo Ionization Method
Plasma Ionization Method
Plasma Ion source
Main fission (p-> 238U) fragments

6. Most Intense isotope (1/s)
30/01/2018
SPES Expected neutron rich beams
Element
Mass
Most Intense isotope (1/s)
Ioniz. Eff (%)
Target
Ionization method
R&D (difficulty) Ni
65-69
10+6 6
UCx
LIS ** Cu
66-76 7 Zn
72-79 5 Ga
72-84 20 Ge
75-84
10+7 3
*** Kr
85-93 30
FEBIAD Rb
86-94
10+9 65
SIS * Sr
89-96
10+8
SIS+LIS Y
90-97
**** Pd Ag 14 Cd 10 In 15 Sn Sb Te Xe Cs 85 Ba La

7. On-Line Target and Ion Source Testing Facility
HRIBF:
On-Line Target and Ion Source Testing Facility
(low intensity (<50 nA) tests of RIB production targets)
30/01/2018
Beam from Tandem Accelerator
Target / Ion Source
Beam Diagnostics
Dipole Magnet
M/DM = 2000
Moving Tape System
and g-ray Detector

8. On line UCx test at HRIBF
30/01/2018
Tested HRIBF in March 2010
Seven UC2 samples SPES Target Group (in collaboration with HRIBF)
Densities in the range of 4.2 g/cm3
Used the SPES design where the targets are spaced out to allow for enhanced radiation to the walls of the container
Heated to 2000° C for about two weeks without any out-gassing or obvious change in structure (samples observed after the on-line test)
Mean r = 4g/cm3
7 UCx pellets of 13 mm. diameter

9. 30/01/2018
SPES UCx prototype
n-rich isotope yields

10. New target for 2nd HRIBF test
30/01/2018
Mean r = 2.5g/cm3
SPES UCx-CNT for ORNL : on line test performed on October ‘11

11. Preliminary results – UCX-CNT Data analysis in progress
Isotopes collected
in the Tape System
with target at 2000°C
Data analysis in progress

12. New target for 3nd HRIBF test
30/01/2018
New production 6 g/cm³ (MD) UCX targets
Production process:
1)“Standard” carbothermal reduction synthesis→~4 g/cm³
2) Grinding and re‐pressing of the powders→ to be done
3) Re-sintering of the pellets →to be done
First prototype sample produced with density ~ 6.2 g/cm³
Mean r = 6g/cm3
SPES UCx-MD for ORNL : on line test planned for April ‘12

13. Proton-rich beams for SPES-α
30/01/2018
Proton-rich beams for SPES-α 1 H 2 He 3 Li 4 Be 5 B 6 C 7 N 8 O 9 F 10 Ne 11 Na 12 Mg 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar 19 K 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr 37 Rb 38 Sr 39 Y 40 Zr 41 Nb 42 Mo 43 Tc 44 Ru 45 Rh 46 Pd 47 Ag 48 Cd 49 In 50 Sn 51 Sb 52 Te 53 I 54 Xe 55 Cs 56 Ba 72 Hf 73 Ta 74 W 75 Re 76 Os 77 Ir 78 Pt 79 Au 80 Hg 81 Tl 82 Pb 83 Bi 84 Po 85 At 86 Rn 87 Fr 88 Ra 57 La 58 Ce 59 Pr 60 Nd 61 Pm 62 Sm 63 Eu 64 Gd 65 66 Dy 67 Ho 68 Er 69 Tm 70 Yb 71 Lu 89 Ac 90 Th 91 Pa 92 U 93 Np 94 Pu 95 Am 96 Cm 97 Bk 98 Cf 99 Es
100 Fm
101 Md
102 No
103 Lr
Alkaline - Alkaline earth metals
Post-transition elements
Halogens
Noble gases
Transition metals
Lanthanides

14. SiC , B4C & oxides Target SiC (Saint Gobain) Boron Carbide 30/01/2018
Elemento A
Half Life
Target dedicati
Ionizzazione Na 21
22.48 s
Al2O3 – SiC - CeS
SIS 22
2.6 a Mg
3.86 s
LIS-FEBIAD 23
11.3 s Al 24
2.05 s
SiC - CeS
SIS-LIS 25
7.18 s 26
6.35 s P 29
4.1 s
FEBIAD
28Si(p,a)25Al 28Si(p,2pn)26Al
Boron Carbide
Elemento A
Half Life
Target dedicati
Ionizzazione Be 7
53.29 d
B4C - Ossidi
LIS-FEBIAD F 17
64.8 s
ZrO2 – HfO2
FEBIAD 18
109.7 m
Al2O3 Si 26
2.21 s
Al2O3 - CeS 27
4.16 s

15. LaCx &TaC target LaCx TaC foam Ta2O5 + 7C → 2TaC + 5CO
30/01/2018
LaCx &TaC target
Elemento A
Half Life
Target dedicati
Ionizzazione I
126
13.11d
LaCx - CeS
FEBIAD Xe
127
36.4 d
CeS Cs
129
32 h
SIS
130
29.2 m
131
9.69 d
132
6.47 d Ba
11.5 d
LaCx
La2O3 + 11C → 2LaC2 + 4C + 3CO
Elemento A
Half Life
Target dedicati
Ionizzazione Ho
164
29 m
TaC
SIS Tm
168
93.1 d Yb
169
32 d Lu
172
6.7 d
173
1.37 a
174
3.31 a Hf
23.6 h
FEBIAD
TaC foam
Ta2O5 + 7C → 2TaC + 5CO

16. Lanthanum carbide synthesis
High vacuum, high temperature furnace (up to 2100°C, 10-6 mbar)

17. 30/01/2018
The SPES 1+ Ion Sources
SPES SIS
& LIS
SPES PIS

18. Ionization measurements Front end running since June ‘10
30/01/2018
Front end running since June ‘10
Beam diagnostic
devices
Beam transport devices
Traget & Ion source
(platform 30kV)

19. Mass marker capillarity technique
SPES Ion Sources
30/01/2018
Surface Ion Source:
Mass marker capillarity technique

20. Cesium Surface Ionization
SPES SIS Ion Source
30/01/2018
Calibrated
solution of
CsNO3
Solution drying
Insertion in the tube
Tantalum substrate
Cesium Surface Ionization

21. New SIS (Ta hot-cavity)
30/01/2018
The new SPES Surface Ion Source
Old SIS (W hot-cavity)
New SIS (Ta hot-cavity)

22. Calibrated leak gas inlet technique
SPES Ion Sources
30/01/2018
Plasma Ion Source:
Calibrated leak gas inlet technique

23. SPES PIS Ion Source
30/01/2018
Argon Ionization

24. R&D for the SPES Plasma Ion Source
30/01/2018
R&D for the SPES Plasma Ion Source
PIC numerical simulation of the ion beam extraction for the Plasma ion source

25. Laser test at LNL with excimer
Aluminum ionization with a single wavelength
30/01/2018
LPX200 XeCl excimer laser
Pulse. 15 ns λ=308 nm
Al photo ionization
Laser beam
Phosphorescence of λ=308 nm
on Teflon
The laser beam shape is focalized into hot cavity
of 3 mm. diameter and 6 m. far away

26. Aluminium photo-ionization
First ionization results (Current collected into the Faraday Cup )
Laser off
Laser On

27. (About 26 contributions since 2005)
30/01/2018
SPES Target papers
(About 26 contributions since 2005)

28. Thanks for your attention!
30/01/2018
The SPES-TIS group
Thanks for your attention!