International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
HITRAP - a facility for experiments
on heavy highly charged ionsand on antiprotons
Wolfgang QuintGSI Darmstadt and Univ. Heidelberg
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
experiments with particles at rest or
at low energies
strippertarget
ESR
electron coolingand deceleration down to 4 MeV/u
U73+
U91+
4
00
MeV
/u
UNILAC
coolerPenning
trap
U91+
post-decelerator SIS
HITRAP at the ESR Storage Ring
EXPERIMENTS WITH HIGHLY CHARGED IONS AND ANTIPROTONS AT EXTREMELY LOW ENERGIES:
g-factor measurements of the bound electron
mass measurements of extreme accuracy
laser spectroscopy
reaction microscope, collisions at very low velocities
surface studies and hollow-atom spectroscopy
x-ray spectroscopy
EXPERIMENTS WITH HIGHLY CHARGED IONS AND ANTIPROTONS AT EXTREMELY LOW ENERGIES:
g-factor measurements of the bound electron
mass measurements of extreme accuracy
laser spectroscopy
reaction microscope, collisions at very low velocities
surface studies and hollow-atom spectroscopy
x-ray spectroscopy
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
Other experimental setups H1-H6Other experimental setups H1-H6
g-factortrap
g-factortrap
Linac operation frequency 108.408 MHz
IH-deceleration 4 MeV/u 0.5 MeV/u (10.5 MV)
RFQ-deceleration 0.5 MeV/u 6 keV/u (1.5 MV)
Max. A/q 3 (corresponds to 238U80+)
operation with antiprotons YES, planned at FLAIR
Cooler trapDouble-drift-buncher RFQIH-structure
HITRAP facility at ESR
SPARC-EBIT
HCI from ESR 4 MeV/u 0.5 MeV/u 6 keV/u
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
to experiments
DDB sectionIH section RFQ section
matching section and cooler trap
HITRAP: Technical design
7m
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
Experiments
IH-structure+MEBT RFQDouble-drift-buncher
LEBT+Cooler-trap
vertical beam line
Commissioning of IH-structure with bare gold ions Au79+ from ESR in August and October 2008
double-drift buncher
IH-structure
successful
tests of• beamline• detectors• bunchers• emittance
meter
with beams
from the ESR
in August
2007
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
HITRAP facility at ESR
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
DD-Buncher IH-Structure RFQ&LEBT TRAP
Experiments
commisioning ongoing installation ongoingcommisioned
Commissioning of IH structure:Deceleration from 4 MeV/u to 0.5 MeV/u
00.5
4
MeV/u
Magnetic deflection set to 4 MeV/u Magnetic deflection set to 0.5 MeV/u
• Energy signal on single crystal diamond detector:
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
Experiments
IH-structure+MEBT RFQDouble-drift-buncher
LEBT+Cooler-trap
vertical beam line
Commissioning of RFQ decelerator andof cooler trap foreseen in April and autumn of 2009
RFQ decelerator HITRAP cooler trap
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
ee--ee--
UU92+92+
HITRAP Cooler Penning trap● electron cooling ● resistive cooling to T = 4 K
highly charged ionsfromHITRAP decelerator
3
cooled HCIto HITRAPexperiments
extraction from cooler trap:fast (s) or slow (ms...sec)
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
Principle:• Excitation of spin-flip in precision trap (homogeneous magnetic field)
Principle:• Excitation of spin-flip in precision trap (homogeneous magnetic field)
precisiontrap
analysistrap E
lectric potential shape
Mag
netic
fiel
d lin
esContinuous Stern-Gerlach-Effect anddouble-trap technique for g-factor measurements
• Detection of spin-flip in analysis trap (inhomogeneous magnetic field)
• Detection of spin-flip in analysis trap (inhomogeneous magnetic field)
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
Ion bunch other experiments
HITRAP platform
UHV-chamber
cryo-electronics
magnet nitrogen outlet
transition to 300K
room temperaturevalve
superconducting coil
Penning trap @ 4K
electronics @ 4 K
cryo-valve @ 4 K
transition to 77K
heat guide @ 4K
magnet helium outlet
4K stage
77 K stage
coldhead
to compressor
300 K room temperaturemagnet bore
Experimental setup for bound electron g-factor measurements on heavy HCI
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
• HFS wavelengths move into visible for Z>70
• very small Doppler width at T = 4 K
• relative wavelength accuracy ≤ 10-7
Laser spectroscopy of hyperfine splittingin highly charged ions
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
HITRAP at FLAIR - Facility for Low-energy Antiproton and Ion Research
FLAIR
NESR
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
stripper target
NESRLSR
electron coolingand deceleration
down to few MeV/u
SIS 100
coolerPenning
trap
experiments with particles at rest or
at low energies
post-decelerator
EXPERIMENTS WITH HIGHLY CHARGED IONS AT EXTREMELY LOW ENERGIES:
stable and radioactive isotopes
mass measurements with radionuclides
new possibilities
- calibration of hyperfine fields in simple systems
- polarization of radionuclides
- decay spectroscopy of highly charged radionuclides
EXPERIMENTS WITH HIGHLY CHARGED IONS AT EXTREMELY LOW ENERGIES:
stable and radioactive isotopes
mass measurements with radionuclides
new possibilities
- calibration of hyperfine fields in simple systems
- polarization of radionuclides
- decay spectroscopy of highly charged radionuclides
CR
SPARC – Stored Particles Atomic Physics Research Collaboration:HITRAP for Stable and Radioactive Highly Charged Ions
SFRS
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
FLAIR -Facility for Low-energy Antiproton and Ion Research
Factor 100 more pbar trapped or stopped in gas targets than now
FLAIR
HITRAP will receive4 MeV antiprotonsfrom LSR
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
FLAIRBuilding
HITRAP will deliver5 keV antiprotonsto low-energy experiments
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
pbar experimental areas: E = 400 MeV to 5 keV
HITRAP: deceleration from 4 MeV to rest, av. intensity: 1x106/s
LSR: deceleration from 30 to 0.3 MeV
SIS 100: acceleration of 2.8 1013 protons, E = 29 GeV
Antiproton target: production of 1.0 108 pbars/ 5 s, E = 3 GeV
Collector ring CR: fast stochastic cooling in 5 s, N = 108/cycle
RESR: accumulation of pbars, N = 108 – 1011
FLAIR: Antiproton IntensitiesFLAIR: Antiproton Intensities
USR: deceleration from 300 to20 keV, av. intensities:• Reff = 1x1012/s at 300 keV• Rextr = 1x106 /s at 300 keV• Reff = 1x1010/s at 20 keV• Rextr = 5x105 /s at 20 keV
NESR: electron cooling, deceleration from 3 GeV to 30 MeV
FLAIR
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
HITRAP as decelerator and cooler facility for antiprotons at FLAIR:Plan B / Operation without LSR
IH-structure+MEBT RFQDouble-drift-buncher
LEBT+Cooler-trap
HCI from NESR 15 MeV/u 4 MeV/u 0.5 MeV/u 6 keV/u(drawing not to scale)
IF the NESR can decelerate anti-protons to 15 MeV
IF we build one more IH-structure with Vgap = 11 MV
and
then
HITRAP will not need the LSR storage ringto decelerate anti-protons to rest
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
Factor 100 more pbar trapped or stopped in gas targets than now
FLAIR
15 MeV
HITRAP at FLAIR:Plan B / Operation without LSR
15 - 0 MeV
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
HITRAP at FLAIR:Physics Topics with Antiprotons
• Spectroscopy for tests of CPT and QED– Antiprotonic atoms (pbar-He, pbar-p), antihydrogen
• Gravitation of antimatter– Trapped and laser-cooled antihydrogen
• Atomic collisions– Ionization, energy loss, antimatter-matter collisions
• Antiprotons as hadronic probes– X-rays of light antiprotonic atoms: low-energy QCD
– X-rays of neutron-rich nuclei: nuclear structure (halo)
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
Summary and Outlook
• FLAIR and SPARC: low-energy antiprotons and radioactive ions will be available at NESR with high intensity.
• FLAIR and SPARC: low-energy antiprotons and radioactive ions will be available at NESR with high intensity.
HITRAP will be a unique facility for highly-charged ions
up to U92+ at very low energies.
Commissioning of HITRAP Facility at the ESR at GSI is under way.
HITRAP will be a unique facility for highly-charged ions
up to U92+ at very low energies.
Commissioning of HITRAP Facility at the ESR at GSI is under way.
The future plans of SPARC and FLAIR givea long-term perspective for HITRAP.
The future plans of SPARC and FLAIR givea long-term perspective for HITRAP.
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
GSI:K. BrantjesF. HerfurthO. KesterH.-J. KlugeS. KoszudowskiC. KozhuharovW. NörtershäuserB. O'RourkeW. QuintTh. StöhlkerM. VogelG. VorobjevD. Winters
Mainz:S. KreimC. RodegheriB. SchabingerS. StahlS. SturmS. UlmerA. WagnerJ. WalzG. Werth
HITRAP Collaborators
St. Petersburg:A. ArtemyevD.A. GlazovS. KarshenboimD. MoskovkinV.M. ShabaevV.A. Yerokhin
supported by EU, DFG, BMBF
TU Darmstadt:G. BirklTh. Walther
IAP Frankfurt:A. SchemppU. Ratzinger
Stockholm:R. Schuch et al.
Heidelberg:K. BlaumJ. Ullrich
London:R. ThompsonD. SegalKVI Groningen:
R. Hoekstra
International Accelerator Facility forBeams of Ions and Antiprotons at Darmstadt
FLAIR Collaboration Meeting, Stockholm, Feb 2-3, 2009, W. Quint
Laslett Tune Shift = -0.05
1,E+05
1,E+07
1,E+09
1,E+11
1,E+13
1,E-01 1,E+00 1,E+01 1,E+02 1,E+03 1,E+04
Kinetic Energy [MeV]
Sp
ace
Ch
arg
e L
imit
10 pi1 pi0,1 pi4 pi norm.
168 pi
Space Charge Limits in Rings
(by B. Franzke)
extraction of 108 pbars from LSR to HITRAP at 4 MeV