Download - ADUC and ELENA Meeting 28-29 September 2011
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Physik des Antiprotonenbeschleunigers HESRADUC and ELENA Meeting
28-29 September 2011
Sept. 29, 2011 Rudolf Maier
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Outline
IntroductionHESR: High-Energy Storage RingPrototyping of HESR components Beam Experiments at the Cooler Synchrotron COSYSummary
Contribution to ELENA
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Facility for Antiproton and Ion Research
p-Linac
HESR
SIS18SIS100
CR/RESR
AntiprotonsProduction Target
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HESR design driven by the requirements of PANDA:
• Antiprotons with 1.5 GeV/c ≤ p ≤ 15 GeV/c• High luminosity: 2·1032 cm-2s-1
- Thick targets: 4·1015 cm-2
• High momentum resolution: Δp/p ≤ 4·10-5
- Phase space cooling
• Long beam life time: >30 min
Criteria for the Layout of the HESR
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HESR with PANDA and Electron Cooler
HESR Consortium: Germany (Jülich, GSI, Mainz), Romania and Slovenia
HESR COSY575 m Circumference 184 m
1.5 – 15 GeV/c Momentum 0.3 – 3.7 GeV/c
up to 9 GeV/c Electron Cooling up to 0.5 GeV/cFull range Stochastic Cooling 1.5 – 3.7 GeV/c
HESRCOSY
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HESR Prototyping and Tests
WASA
2 MeV e-Cooler
Barrier Bucket Cavity
Stochastic Cooling
Residual Gas Profile Monitor
Pellet Target
100 KeV e-Cooler
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Example: Beam Cooling with WASA Pellet Target
a) Injected beamb) Beam heated by targetc) + stochastic coolingd) + barrier bucket
0
1 10-7
2 10-7
3 10-7
4 10-7
5 10-7
6 10-7
1.5368 1.5369 1.537 1.5371 1.5372 1.5373
Par
ticle
Den
sity
(arb
. uni
ts)
f [GHz]
a) b)
d)
c)
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Hadron Physics with Antiprotons
Sophisticated accelerators Forefront beam cooling Internal targets RF manipulation techniques
Summary
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Contribution to ELENA
IKP at the research center Juelich has a long
standing tradtion of significant contributions to the facility and physics program at the CERN-AD.
We fully support constructing the ELENA ring to increase the phase space density of the cooled antiprotons.
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Contribution to ELENA
In the application phase of ELENA we have agreed to contribute the equivalent of 3 person-years to the construction efforts, and now that ELENA has been approved, we remain dedicated to this pledge.
Currently our electronic and mechanical workshops are fully booked, however we are happy to discuss workpackages that match the time schedules, as well as other contributions that require other resources.
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Contribution to ELENA
H- Source
Running H- Sources since 1995 for Injection into Cyclotron
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mbar
Beam intensity2 Spin FlipsDAQ stoppedTarget off
Pressure at filter target
Pressure at deuterium target
16000s of spin-filtering
Total trigger rate
2500s of polarisation measurement
COSY Cycle for spin-filteringat 49.3 MeV