1. Progress of BRIF and CARIF
Weiping Liu
柳卫平
中国原子能科学研究院
China Institute of Atomic Energy, CIAE
October 14, 2010
International symposium on nuclear physics in Asia
Beihang University

2. Major facilities of nuclear physics in China
Beijing BRIF, BRIF II ,
Low E HI, RIB, 2013
Lanzhou, CSR Med E HI, RIB, 2008

3. Few words about CIAE China Institute of Atomic Energy
Established in 1950, multi-disciplinary national lab for nuclear science, JAEA like, 30 km SW of downtown
Nuclear physics, basic research
Nuclear chemistry, nuclear fuel cycle technology
Reactor engineering and more,
Nuclear application, application of nuclear science
Uniqueness
Large scale facilities, reactors, accelerators, hot labs
Multiple field of nuclear science
Connection between research and industry

4. What is BRIF and CARIF Both in CIAE
BRIF: Beijing Rare Ion beam Facility, under construction, will be commissioned in 2013, ISOL type
CARIF: China Advanced Rare Ion beam Facility, proposed, in combination of ISOL and PF technique

5. ISOL and PF The New facilities The combination of both
For precise physics with high quality beams
Advanced target and ion source technology needed
Few operational, many proposed, ISAC, REX-ISOLDE, HRIBF, etc
BRIF PF
For physics of extreme iso-spin
Using in-flight separation method
Currently used in many facilities, e.g., MSU, GANIL, CSR, RIBF, FRIB, and FAIR
The New facilities
The combination of both
Considered in FRIB, SPIRAL2, KoRIA and EURISOL
Proposed in CARIF

6. BRIF (Beijing Rare Ion beam Facility)
Cyclotron
ISOL
Tandem
SCL
ISOL mass resolution
super-conducting LINAC 2 MeV/q
compact proton cyclotron 100 MeV 200 mA

7. Project milestone Evaluation in 1997 Project approved in 2003
Feasibility plan approved ($27 M) in 2004
Revised feasibility plan submitted in 2008
Revised feasibility plan got permission in Aug ($52 M)

8. New parts after the Tandem
Cyclotron
ISOL

9. Cyclotron

10. Cyclotron progress The main magnet in final assembly stage
Two main magnet coils are ready
Two 100kW RF power supplies tested
The vacuum chamber and elevating system will be completed soon

11. ISOL progress Magnet fabricated Target/ion source test bench assembled
Magnet coils finished

12. BRIF upgrade
Super-conducting LINAC of 17 MeV/q
from Stony Brook NYU

13. BRIF summary
Cyclotron: magnet rough finished, with detailed fabrication finished
ISOL: magnets finished, target-source area in progress
SC LINAC: design finished, all the fabrication in progress
Civil engineering will start by the end of the year
Will deliver to user in 2013
The follow up SC LINAC for NYU may be operational in 2014

14. CARIF proposal
China Advanced Rare Ion-beam Facility

15. Frontier of nuclear physics and facility development
Exploring the area of extreme isospin: current status
reach Z=30 for proton rich
reach Z=10 for neutron rich, far from the region of shell evolution and astrophysical r-process
What RIB intensity we need to go further
10-5 pps, for neutron drip line search
10-2 pps, for half life and mass
102 pps, for direct reaction
104 pps, initiative structure study
Need: higher energy, intensity and acceptance
What limit us now
The isospin of stable beams
Beam transport
Space charge limitation
High resolution and beam purity at same time

16. The new generation
Using neutron beam instead: from reactor or accelerator, with 580 b 235U fission, ISOL selection of “easy but good” fragmentation, post acceleration, fragmentation again. EURISOL, CARIF
Pro and con
Pro: we will have 5-8 more neutrons than stable beam, with cross section increase by 6-9 order
Con: re-accelerated beam intensity weaker by 5-6 order: RIBF 238U 1012 pps；New 132Sn pps
The net gain: 1-2 order or more!
Feasibility: combination of well established technique
Good and easy beam: long half life, high yield, normal ISOL
10 pnA order beam acceleration: no limitation of space charge and beam diagnostics
The PF technique is well established
I. Tanihata, NIM B266(2008)4067

17. Pro and Con chart

18. Good and easy fragments
91Kr
1.8 s
132Sn
39.7 s
Good and easy：
Large yield
Long half live
Easy to separate

19. Research reactor in the world
Neturon flux (horizontal,/s/cm2)
ILL, 1.5X1015
FRMII, 6X1014
Other, 3X1014
CARR 8X1014
Some similar proposal
ILL, PIAFE
FRMII,MAFF
Not approved, and not post fragmentation
Provide useful informaiton

20. The CARIF China Advanced Rare Ion-beam Facility T1/2 N/Z
132Sn, 91Kr,
142Xe
132Sn, 91Kr, 142Xe
120Sr, 78Ni, 138Sn
nth
ISOL 同位素 分离器
FRS
次级 束流线
LINAC 直线 加速器
Halo
r process
Magic
CARR
反应堆
8x1014cm2s-1
109pps
107-8pps
102-3pps
150 MeV/A
50 MeV/A
300 keV
132Sn, 91Kr,
142Xe
SHE
Reaction
Structure
108pps
10 MeV/A
T1/2 N/Z
132Sn, 39.7 s, 1.64
91Kr , 1.8 s, 1.53
142Xe,1.22 s, 1.63
N/Z
238U, 1.57
48Ca , 1.4
136Xe, 1.52

21. CARIF construction plan
Mass-separator
Ion
Source
CARR
DTL
RFQs
Bunching
RFQ
Experiments
of decay
of SHE etc
Charge
selector
breeder
Mass separator
reactor
Secondary beam line
LINAC
Target
chamber
Experiment of unstable beam
Stable ECR ion source

22. The location in eye birds view
CARR
CARIF

23. The China Advanced Research Reactor CARR
Proposal approved in 1997
Engineering approved in 2002
Civil engineering finished in 2005
Reactor core finished in 2007
First critical in May, 2010
Multipurpose, high performance
Light water cooling, heavy water reflecting
60MW, neutron flux8×1014 n/cm2·s
Will reach full power by the end of 2011

24. CARISOL: the current status
For decay studies and CARIF ISOL test bench

25. Comparison of fission rates
A good way for intensity comparison for fission fragment post acceleration facility is the fission rate, since the technique after this is the same
CARIF
CARIBU
SPIRAL2
TRIUMF
SCRIT
Fission rates
1015
109
1014
1013
1011
Remarks
Reactor neutron, 235U of 5g
252Cf spon. fission
Accelerator neutron, 238U of 280g
Photo fission

26. Technical challenges High temperature and dosage target/ion source
Effective extrication of fission fragment
Effective isotope separation
High beam transmission of post acceleration stage
PIAFFE gave a very detailed and helpful proposal
CARIBU in ANL, under construction, 252Cf fission then ISOL, ATLAS acceleration
ORNL, separation and acceleration of 132Sn to 104 pps
Studsvik reactor: 1 g 235U and 3X1011 /cm2/s neutron
All showing the feasibility of ISOL post acceleration of fission fragment beams like 132Sn

27. Beams with 91Kr r-process
Neutron flux: 8x1014 /s/cm2, 235U target: 5g, Linac transmission: 50%

28. Beams with 132Sn r-process
Well with the reach of astrophysical r-process

29. Beams with 142Xe r-process
120Sr to 10-4 pps, the possibility to explore neutron drip line

30. Science and application
Add single neutrons until drip line
New magic number
Super heavy elements
Giant halo structure
Astrophysical r-process
Multi-neutron correlation
New decay modes: bxn, GS neutron decay
Neutrino beam
Data of n-rich nuclei
Application of n-rich beams

31. CARIF region CARIF New isotopes by U in-flight fission
S. Kubono / Nuclear Physics A 693 (2001) 221–248

32. Nuclear structure CARIF
H. Grawe, M. Lewitowicz / Nuclear Physics A 693 (2001) 116–132

33. CARIF proposal progress
Domestic, 2010
January, first internal discussion
June, plan submitted to CAEA and then to NDRC
July and after, plan presented in community
International
January, idea discussion in RCNP
July, brief report in WG9/IUPAP, Vancouver, and then cited by B. Fulton in INPC2010 invited talk
October, presented in ANPhA symposium in Seoul

34. Summary
Nuclear physics in CIAE will open up new opportunities, driving by BRIF and future CARIF
BRIF will be a unique ISOL facility and will be commissioned in 2013
CARIF will be a world advanced facility, based on the commissioning CARR research reactor
The combination of advanced idea and feasible technique will result the extremely neutron-rich beam, possibly higher intensity than existing facilities
We will have a workshop on CARIF in March 2011 in Beijing, after ANPhA meeting in Lanzhou, welcome to join us to give suggestions on CARIF design and its physics!