Post on 18-Jan-2016
The DESIR physics workshop(Leuven 26th – 28th May)
Paul Campbell
Present status…Community interests…
The future experiments…
The DESIR physics workshop
73 delegates 23 institutions 12 countries
½ + 1 + ½ days, 4 sessions
– the facilities, BESTIOL, LUMIERE, traps
OUTCOMES: reported today and,
http://www.cenbg.in2p3.fr/desir/spip.php?rubrique82
APPENDIX III:
DESIR collaboration agreement
After the construction of the DESIR infrastructure (RFQ cooler SHIRaC, high-resolution separator
HRS, beams lines from S1, S2, and S3 to DESIR), the DESIR collaboration proposes the
installation of a certain number of general equipment (stable ion sources, identification station,
general-purpose ion buncher GPIB) which will be available to all experiments. This equipment will
be provided by the collaboration as a whole or by different groups and financed by different means
(ANR, regional grants etc.).
Part of the equipment necessary to perform experiments in DESIR exists already or is presently
built and commissioned. Other parts will be constructed in the next few years. This equipment is
financed by different parts of the DESIR collaboration and will be installed permanently or for
longer periods in the DESIR hall. Details of this process will be fixed in a Memorandum of
Understanding which is presently being elaborated.
The DESIR physics workshop
Introduction...
Present experiments and equipment...
The future experiments and interest...
A/q=6 Injector option
A/q=6 Injector option
DESIR Facility low energy RIBDESIR Facility low energy RIB
HRS+RFQ CoolerHRS+RFQ Cooler
RIB Production CaveUp to 1014 fiss./sec.
RIB Production CaveUp to 1014 fiss./sec.
A/q=3 HI sourceUp to 1mA
A/q=3 HI sourceUp to 1mA
A/q=2 sourcep, d, 3,4He 5mAA/q=2 source
p, d, 3,4He 5mA
LINAC: 33MeV p 40 MeV d 14.5 AMeV HI
LINAC: 33MeV p 40 MeV d 14.5 AMeV HI
SP2 Beam time: 44 weeks/yGANIL Beam time: 35 weeks/yISOL RIB Beams: 28-33 weeks/yGANIL+SP 2 Users: 700-800/y
SP2 Beam time: 44 weeks/yGANIL Beam time: 35 weeks/yISOL RIB Beams: 28-33 weeks/yGANIL+SP 2 Users: 700-800/y
GANIL/SPIRAL1/SPIRAL2 facilityGANIL/SPIRAL1/SPIRAL2 facility
GANIL/SPIRAL 1 today
CIME cyclotron RIB at 1-20 AMeV (up to 9 AMeV for fiss. fragments)CIME cyclotron RIB at 1-20 AMeV (up to 9 AMeV for fiss. fragments)
S3 separator-spectrometerS3 separator-spectrometer
Neutrons For Science
Neutrons For Science
SPIRAL2 is one of the ESFRI list projects (40 most important EU research infrastructure projects)
Cost: 200M€Funded
Cost: 200M€Funded
DESIR (typical example) 29 weeks of RIB/year: 10 weeks of ISOL RIB from SPIRAL2, 4 weeks from S3, 15 weeks from SPIRAL1 DESIR (typical example) 29 weeks of RIB/year: 10 weeks of ISOL RIB from SPIRAL2, 4 weeks from S3, 15 weeks from SPIRAL1
Beamtime…
The DESIR physics workshop
Introduction...
Present experiments and equipment...
The future experiments and interest...
New experimental setup for 2p emission : The Silicon Cube
I. Matea et al, Nucl. Instr. and Meth. A 607 (2009) 576
High granularity with 1536 pixels
Angular coverage
54% for one proton detection
29% for two-proton detection
6 DSSSD with 16x16 strips
6 silicon detector behind
192 electronics channels
3 EXOGAM clovers
P. Ascher
M. B. Gómez et al. UPC, Barcelona
SIMULATION VALIDATION WITH 252Cf SOURCE IN UPC LAB
Wall effect190 keV
Noise
Wall effect575 keV
Full energy 765 keVExp % MCNPX % GEANT4 %
Inner crown 21.3 ± 3.2 21.3 ± 1.5 25.0 ± 1.6
Outer crown 4.9 ± 0.7 6.0 ± 0.8 5.4 ± 0. 7
Tot 26.1 ± 3.9 27.3 ± 1.7 30.4 ± 1.7
Experimental uncertainty due to source activity uncertainty (15%)
252Cf neutron energy distribution
TAGS uses large 4 scintillation detectors, aiming to detect the full -ray cascade rather than individual -rays
Deconvolution with spectrometer response to decay
spectrumstrength
kjkj
-1
RgR
dRf
1
0
""j
kjkb
1
21)(
s
TEQf
IS
i
ii
An ideal TAS would give directly the -intensity I
Response from MC simulations and nuclear statistical model
Clean sources & minimum of statistics J.L. Tain
T. Cocolios
Pumping in the cooler:
G. Neyens, K. Flanagan, B. Cheal, F. Charlwood, P. Campbell
1.9 m
neutralizer re-ionizer
unpolarized ANa+1
30 keV
polarized ANa+1
B10Gauss
C.D.P. Levy et al.Nucl. Instr. and Meth.B204 (2003) 689
TRIUMF ISACPolarized Beam Line
pumping within 2.6s
beam velocity tuning
polarized ANa0
Kiefl 8Li: longitudinal-NMRcondensed matter physics
Kiefl 8Li: transverse-NMRcondensed matter physics
Shimoda ANa: transverse 11Li: transversedecay spectroscopy
two frequencylaser beams
T. Shimoda
- n, - n-- , coincidence
Li-glass scintillator: Δn = 0.92% x 5, n =2.1%@15 keV, n = 1.3%@80 keV En 1 keV≧ Flight Length: 130 mm
Ge detector: HPGe, 50 and 60 %, Δ= 3.2x10 @3 MeV
plastic scintillator: Δn = 1.8% x 6, n = 19%@2 MeV, En ≧500 keV Flight Length: 1.5 m
-ray telescope: Δ = 14.7% x 2, = 90%
-3
En = 1 keV – 9 MeV
Experiment at TRIUMF (E903) Experiment at TRIUMF (E903) 11Ligs
11Be*+10Be* + n
10Begs +
30.5 keV
50% polarization
-decay asymmetry
Status of MLLTRAP Status of MLLTRAP
- 7T trap magnet, identical to SHIPTRAP, JYFLTRAP
Status:- operational with Δm/m~5.10-8
(without systematic errors)- systematic effects on B field studied
DESIR Workshop, Leuven, May 26-28, 2010
24:00 36:00 48:00 60:00 72:00 84:00 96:00
-1.0x10-7
0.0
1.0x10-7
( C - <
C> ) / <
C >
RE
LA
TIV
E C
HA
NG
ES
B /
B
TIME (hh:mm)
B/t 1/ B = - 1.3 (3) x 10-9 / h
24:00 36:00 48:00 60:00 72:00 84:00 96:00
-1.0
-0.5
0.0
0.5
1.0
TE
MP
ER
ATU
RE
CH
AN
GE
S (K
)
Troom - 293.6 K
P. Thirolf, D. Lunney
04/21/23 16
[ O. Naviliat-Cuncic & N.S., Phys. Rev. Lett. 102 (2009) 142302
reduce by new measurements of Ft values and
correlation coefficientsE. Lienard, N. Severijns
The DESIR physics workshop
Introduction...
Present experiments and equipment...
The future experiments and interest...
146Gd
100Sn
2nd FP
1st FPA~74 N~Z
Existing TAS measurements
132Sn
78Ni
100Sn
Superallowed
Proposed TAS measurements
• Nuclear structure @ magic nuclei• Astrophysics: r-process• Fundamental physics• Reactor decay-heat• Reactor neutrino-spectrum
Motivation
• GT- resonance is close to Qβ window
• Complementary to earlier studies using high resolution (Leuven group)
~ 78Ni
Mass scan
Measured TAS spectra
Measurement of Nb, Mo and Tc isotopes for Reactor Decay Heat
IGISOL separator + ion guide source: refractory elements
JYFLTRAP Penning trap: isotopic purification
TAS measurements @ Univ. Jyvaskyla
Valencia, Jyvaskyla, Debrecen, Gatchina, Surrey
70 72 74 76 78 80 82 84 86 88 90 92
6000
8000
10000
12000
14000
16000
S
(2N
) in
ke
V
Neutron number
70 72 74 76 78 80 82 84 86 88 90 92
6000
8000
10000
12000
14000
16000
S
(2N
) in
ke
V
Neutron number
122Pd
128Cd
135Sn
140Te
146Xe
130Cd from Q (ISOLDE) PRL 91(2003)162503
Penning trap data
SPIRAL2 hunting for
odds
Candidate:Candidate: 257 257Rf Rf
DESIR Workshop, Leuven, May 26-28, 2010
SHIPTRAP:2010 : 255Lr 255No, 256Lr: ~ 100 nb
04/21/23 24N. Severijns, DESIR Workshop - Leuven - May 26-28, 2010
37K – D. Melconian, J.A. Behr et al., Phys. Lett. B 649 (2007) 370
37( ) 0.755(24)
0.779(6)SM
B K
B
MW2 > 180 GeV/c2 (90 % C.L.)
Example of polarized atoms in MOT: neutrino asymmetry parameter for 37K
5 % precision
very difficult to determine nuclear polarization precisely
!
TRINAT MOT trap @ TRIUMF
The DESIR physics workshop
Introduction...
Present experiments and equipment...
The future experiments and interest...
APPENDIX III:
DESIR collaboration agreement
After the construction of the DESIR infrastructure (RFQ cooler SHIRaC, high-resolution separator
HRS, beams lines from S1, S2, and S3 to DESIR), the DESIR collaboration proposes the
installation of a certain number of general equipment (stable ion sources, identification station,
general-purpose ion buncher GPIB) which will be available to all experiments. This equipment will
be provided by the collaboration as a whole or by different groups and financed by different means
(ANR, regional grants etc.).
Part of the equipment necessary to perform experiments in DESIR exists already or is presently
built and commissioned. Other parts will be constructed in the next few years. This equipment is
financed by different parts of the DESIR collaboration and will be installed permanently or for
longer periods in the DESIR hall. Details of this process will be fixed in a Memorandum of
Understanding which is presently being elaborated.
The major equipment consists of stable ion sources and a general purpose ion buncher (D. Lunney et al.) with a totalinvestment cost of 250 k€ an identification station with tape drive and associated detectors (Ph. Dessagne et al.) with atotal investment cost of 100 k€ a Penning trap system for mass measurement (the MLLTRAP) provided by the Ludwig-Maximilian University of Munich (P. Thirolf et al.) with a total investment cost of about 700k€ a magneto optical trap for studies “beyond the standard model” proposed by KVI Groningen(H. Wilschut et al.) with an investment cost of 500 k€ the LPCTRAP for weak-interaction studies (G. Ban et al.) with a total investment cost of225 k€ a Collinear Laser-Spectroscopy setup (the LUMIERE facility) provided by the University ofLeuven (G. Neyens et al.) , the University of Manchester (P. Campbell et al.) and the IPNOrsay (F. Le Blanc) with a total investment cost of 970 k€ a total absorption gamma spectrometer provided by CSIC Valencia (J.L. Tain et al.) with atotal investment cost of 425 k€ the TETRA neutron multiplicity setup proposed by JINR Dubna (Y. Penionzhkevich et al.)with an investment cost of 200 k€ a neutron time-of-flight spectrometer provided by a CIEMAT (D. Cano Ott et al.) - LPCCaen (N. Orr et al.) collaboration with an investment cost of 445 k€ a double Penning trap system for beam purification and preparation proposed by CENBordeaux-Gradignan (B. Blank et al.) with a total investment cost of 750 k€ a fast-timing setup provided by a collaboration led by G. Simpson (LPSC Grenoble) with aninvestment cost of 50 k€ a 4p charged particle array proposed by CEN Bordeaux-Gradignan (B. Blank et al.) andCSIC Madrid (M.J.G. Borge et al.) with a total investment cost of 130 k€
The DESIR physics workshop
The range of beam...
The beamtime...
The timing...
DESIR (typical example) 29 weeks of RIB/year: 10 weeks of ISOL RIB from SPIRAL2, 4 weeks from S3, 15 weeks from SPIRAL1 DESIR (typical example) 29 weeks of RIB/year: 10 weeks of ISOL RIB from SPIRAL2, 4 weeks from S3, 15 weeks from SPIRAL1
Beamtime…
Beamtime