Large -area beam tracking detectors for fast extracted beams

1155..0404.200.2005 GSI Darmstadt5 GSI Darmstadt B.SitarB.Sitar

LargeLarge-area beam tracking detectors -area beam tracking detectors for fast extracted beamsfor fast extracted beams

B.Sitar, R.Janik, M.Pikna, P.Strmen, I SzarkaB.Sitar, R.Janik, M.Pikna, P.Strmen, I Szarka

Comenius University BratislavaComenius University Bratislava

DIRACsecondary-Beams meeting DIRACsecondary-Beams meeting GSI Darmstadt 14-15 April 2005GSI Darmstadt 14-15 April 2005

GSI Darmstadt 15.04.2005 GSI Darmstadt 15.04.2005 B.SitarB.Sitar22//2244

Detectors for NUSTAR facilityDetectors for NUSTAR facility

• Ion trackingIon tracking

• Beam profile measurementsBeam profile measurements

• Beam position measurementsBeam position measurements

Different approach for beam intensity regions:Different approach for beam intensity regions:

1 – 101 – 1055 Individual ion tracking Individual ion tracking101055 – 10 – 1099 Beam profile mesurements in low pressure gas Beam profile mesurements in low pressure gas101099 – 10 – 101212 Beam profile measuremnts in vacuum Beam profile measuremnts in vacuum

GSI Darmstadt 15.04.2005 GSI Darmstadt 15.04.2005 B.SitarB.Sitar33//2244

Our preference: gas detectorsOur preference: gas detectors

Reasons:Reasons:

• Experience Experience

• Wide Wide varietyvariety of gas detectors of gas detectors

• Possibility to cover large sensitPossibility to cover large sensitiive areasve areas

• Reasonable pricesReasonable prices

Detector choiceDetector choice

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Individual ion trackingIndividual ion tracking

Experience with TPC trackers at FRS:Experience with TPC trackers at FRS:

Several types of TPC were buit and used for FRSSeveral types of TPC were buit and used for FRS

TPC - reliable detector used in many experiments during 10 yearsTPC - reliable detector used in many experiments during 10 years

Low amount of material in the beam areaLow amount of material in the beam area

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Scheme of TPC with delay line readoutScheme of TPC with delay line readout

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GSI Darmstadt 15.04.2005 GSI Darmstadt 15.04.2005 B.SitarB.Sitar88//2244

GSI Darmstadt 15.04.2005 GSI Darmstadt 15.04.2005 B.SitarB.Sitar99//2244

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Beam profile measurementsBeam profile measurements

Multiwire Multiwire ProportionalProportional (Ionization) (Ionization) Chamber Chamber

Low pressure 0 – 1 barLow pressure 0 – 1 bar

Working with low gas gain up to 1Working with low gas gain up to 1

Low amount of material in the beam areaLow amount of material in the beam area

Fast flash type electronicsFast flash type electronics

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Scheme of the beam MWPCScheme of the beam MWPC

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Beam MWPC with electronicsBeam MWPC with electronics

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TPCs on the holders ready for beam pipeTPCs on the holders ready for beam pipe

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Measured time structure of the beamMeasured time structure of the beam

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Beam profile monitors for very high intensitiesBeam profile monitors for very high intensities

Fluxes over 10Fluxes over 1099 ions / bunch ions / bunch

Beam profile monitors working in vacuumBeam profile monitors working in vacuum

Secondary electron emissionSecondary electron emission

Light emissionLight emission

Residual gas ionizationResidual gas ionization

Charge inductionCharge induction

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Bunch Shape Monitor with wire target Bunch Shape Monitor with wire target

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Bunch Shape MonitorBunch Shape Monitor

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Ionization beam Profile MonitorIonization beam Profile Monitor

Scheme of IPM for beam horizontal profile measurements

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Residual Gas profile MonitorResidual Gas profile Monitor

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C-probe Beam Position MonitorC-probe Beam Position Monitor

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Bratislava Detector Lab – winding machineBratislava Detector Lab – winding machine

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Bratislava Detector Lab – assembly systemBratislava Detector Lab – assembly system

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Bratislava Detector Lab – test benchBratislava Detector Lab – test bench