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EURISOL DS Task 11.2. Universidad de Santiago de Compostela, Spain. Eurisol DS: task 11 meeting March‘05. Subtask description. Preparation of an experiment to investigate residual nuclei production in the reaction 132 Sn+Be at different energies and data taking of the experiment.

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EURISOL DS Task 11.2

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Eurisol ds task 11 2

EURISOL DS

Task 11.2

Universidad de Santiago de Compostela, Spain

Eurisol DS: task 11 meeting March‘05


Eurisol ds task 11 2

Subtask description

  • Preparation of an experiment to investigate residual nuclei

    production in the reaction 132Sn+Be at different energies and

    data taking of the experiment

  • Analyze data, provide production cross sections and validate

    and improve model calculations on fragmentation of neutron-rich

    projectiles

Eurisol DS: task 11 meeting March‘05


Eurisol ds task 11 2

Implementation plan for the first twelve months

  • Preparation of the experiment proposal and submission to the

    GSI PAC.

  • Construction of specific detectors required for this experiment

    new readout for ADCs to increase the acquisition rate

  • Detailed planification of the experiment

  • Beam time preparation: detector setup and DAQ

  • Data taking with 136Xe and 238U beams

Eurisol DS: task 11 meeting March‘05


Eurisol ds task 11 2

Reminder of the experiment

  • Production of extremely neutron-rich isotopes

    (two-step schemes: fission + cold fragmentation)

n,p + 238U  132Sn + Be  X

  • Ground state properties of extremely neutron-rich isotopes

  • Total interaction cross sections: rms matter distributions

  • Proton knock-out: rms charge distributions, binding energies

  • Proton and neutron pickup: charge versus mass distribution

Eurisol DS: task 11 meeting March‘05


Eurisol ds task 11 2

Experimental details

S0-S2:238U(950 A MeV)+Pb  124-132Sn

DZ/Z ~ 5 10-3

DBr/r ~ 3 10-4

DToF ~ 150 ps

L ~ 18 m

DA/A ~ 4.5 10-3

S2-S4:124-132Sn + Be  X

DZ/Z ~ 7 10-3

DBr/r ~ 3 10-4

DToF ~ 150 ps

L ~ 36 m

DA/A ~ 2.4 10-3

Eurisol DS: task 11 meeting March‘05


Eurisol ds task 11 2

Experimental details

238U(1 A GeV)+d  1XXSn

5 different settings

centered on:

124Sn, 126Sn, 128Sn, 130Sn, 132Sn

Eurisol DS: task 11 meeting March‘05


Eurisol ds task 11 2

Beam time request

Total requested time:

main beam time (238U)  7 days (21 shifts)

parasitic beam (136Xe)  5 days

Eurisol DS: task 11 meeting March‘05


Eurisol ds task 11 2

Present status of the work

  • The experiment proposal was submitted and approved by the

    GSI PAC (18 shifts 136Xe-parasitic and 18 shifts 238U )

  • A new plastic scintillator detector is being built at GSI to be

    used as ToF start at S1

  • There are two options for the tracking at S2 (GEM or TPCs). We

    should decide on one of those

  • Somebody should work on the new readout of ADCs

  • We propose a special meeting to coordinate the preparations (participants outside EURISOL: CENBG, Finland)

  • We will try to get the beam in the first block of 2006

Eurisol DS: task 11 meeting March‘05


Eurisol ds task 11 2

Resources distribution

EU contract resources:

  • 2005: 6 man-month (student): 12 K€ + meetings 2 K€

  • 2006: 12 man-month (student): 24 K€ + meetings 2 K€

  • 2007: 12 man-month (student): 24 K€ + meetings 2 K€

  • 2008: 6 man-month (student): 12 K€ + meetings 2 K€

Other resources:

  • 2005: traveling (preparation of beam time): 6 K€

  • 2006: traveling (beam time): 8 K€

  • 2007-2008: traveling (data evaluation): 6 K€

Eurisol DS: task 11 meeting March‘05


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