Jasmin december counter experiments t 972 994 toshiya sanami on behalf of jasmin counter team
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JASMIN December Counter Experiments (T-972/994) Toshiya SANAMI on behalf of JASMIN Counter team. JASMIN Counter team H.Arakawa, M.Hagiawara, Y.Iwamoto, T.Kajimoto, H.S.Lee, K.Saito, T.Sanami, N.Shigyo. Scope of JASMIN collaboration.

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JASMIN December Counter Experiments (T-972/994) Toshiya SANAMI on behalf of JASMIN Counter team

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Jasmin december counter experiments t 972 994 toshiya sanami on behalf of jasmin counter team

JASMIN December Counter Experiments (T-972/994)Toshiya SANAMI on behalf of JASMIN Counter team

JASMIN Counter team

H.Arakawa, M.Hagiawara, Y.Iwamoto, T.Kajimoto,

H.S.Lee, K.Saito, T.Sanami, N.Shigyo


Scope of jasmin collaboration

Scope of JASMINcollaboration

  • JASMIN : Japanese American Study of Muon Interaction and Neutron detection

  • Experimental data for

    • Neutron

      • Generations by high energy proton (120GeV)

      • Interaction with matter

    • Muon

      • Interaction with nucleus

  • Radiation safety issue (shielding and activation),

  • Verification of predictions by simulations

     Improvement of accelerator design

All experimenter’s meeting at Fermilab


Approach to the data

Approach to the data

  • Foil activation, chemical separation

  • Bonner sphere, NE213 scintillator, Dosimeter

  • Activation team (Dec. 13’s talk)

    • Pbar, NuMI and Mtest : Induced activity in concrete, iron, air and water

  • Counter team (Today’s talk)

    • NuMI : Dosimeter for muon induced radiation

    • Pbar : Bonner sphere for neutron spectrum

    • Mtest : Neutron spectrum and yield

All experimenter’s meeting at Fermilab


Experiment at numi

Experiment at NuMI

Muons

Other hadrons

Bypass tunnel

Fermilab rock

12m

18m

30m

Alcove2

Alcove3

Alcove4

Alcove1

Hadron

Absorber

  • Muon and its secondary particles

    • Radiation safety issue at forward angle

    • Dosimeters and Bonner spheres, in comparison with predictions of simulations

Bonner Sphere

OSL/CR39/CR39(B)

TLD

IC

All experimenter’s meeting at Fermilab


Experiment at numi1

Experiment at NuMI

Muons

Other hadrons

  • Dots : dosimeters

  • Lines : MARS15 simulations obtained from proton on TGT

Alcove3

Total dose

Bypass tunnel

Muon

Electron

Fermilab rock

Neutron

12m

18m

30m

Gamma

Alcove2

Alcove3

Alcove4

Alcove1

Hadron

Absorber

Bonner Sphere

OSL/CR39/CR39(B)

TLD

IC

All experimenter’s meeting at Fermilab


Experiment at pbar

Experiment at pbar

  • Shielding data for lateral direction

Bonner sphere with current readout

  • Neutron spectrum through thick shield using Bonner spheres

  • Experimental data are consistent with activation, however differ from calculations

All experimenter’s meeting at Fermilab


Experiment at ftbf

Experiment at FTBF

  • Neutron source term data

    • 120 GeV proton on target

    • Neutron energy spectrum by TOF

120GeV proton beam

Target&BM1,2

5” NE213 @ 30, 90

All experimenter’s meeting at Fermilab


Experiment at ftbf1

Experiment at FTBF

Non-Charged particle

Am-Be bias

Gamma

Neutron

Total light output [MeVee]

Slow light output [MeVee]

Neutron

Gamma

Relative time [sec]

  • PSD : Neutron gamma separation

  • TOF : Energy determination

  • Normalize to number of protons

Total light output [MeVee]

All experimenter’s meeting at Fermilab


Experiment at ftbf2

Experiment at FTBF

Preliminary

All experimenter’s meeting at Fermilab


Experiment at ftbf3

Experiment at FTBF

30 deg.

90 deg.

DDX [mb/MeV/sr]

DDX [mb/MeV/sr]

Energy [MeV]

Energy [MeV]

  • Dec.2010 : more target, angles with removing room scattering effects, for systematic comparison

All experimenter’s meeting at Fermilab


Summary

Summary

  • Secondary particles from 120 GeV proton have been measured from radiation safety point of view.

  • At NuMI, muon and secondary particle data are in good agreement with simulation

  • At pbar, neutron spectrum has systematic difference between experimental and simulations

  • To explore the reason, neutron source term have been measured at FTBF, systematically.

  • Thanks to

    • Fermilab T972/T993/T994 members, N.Mokhov, A.Leveling, D. Boehnlein, K.Vazili

    • MCC / pbar / NuMI / Rad. safety stuffs

    • FTBF members, A.Soha, E.Ramberg, R.Coleman, D.Jensen

All experimenter’s meeting at Fermilab


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