Radiation Physics Beam Tests J. Bauer, J. Liu, L. Nicolas, S. Rokni, M. Santana ESTB Workshop 2011...
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Transcript of Radiation Physics Beam Tests J. Bauer, J. Liu, L. Nicolas, S. Rokni, M. Santana ESTB Workshop 2011...
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Radiation Physics Beam TestsJ. Bauer, J. Liu, L. Nicolas, S. Rokni, M. Santana
ESTB Workshop 2011March 17, 2011
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Introduction
- RP has been a user of primary and secondary beams at SLAC test beam facilities (FFTB, ESA). Last experiments were T489, T493
- RP also conducted experiments at other labs, e.g. CERN (CERF) and PAL (PHERF)
- Previous collaborations with KEK, PAL, CERN and Tsinghua
- The main purpose is benchmarking of Monte Carlo codes that are used in the design/optimization of facilities (personal and environmental radiation protection)
2ESTB Workshop 2011, March 17, 2011
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Recent related research examples (I)Irradiation experiment T489 (28 GeV) at ESA.Benchmarking of activation and residual dose rates
3ESTB Workshop 2011, March 17, 2011
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Recent related research examples (II)Irradiation experiment (2.5 GeV) at PHERF in Pohang Accelerator Laboratory (S. Korea) to study activation of environmental samples and benchmark FLUKA Monte Carlo intra-nuclear cascade code.
Analysis is under way.Further experiments seem necessary to better understand possible FLUKA underestimation of 3H generation as well as of some other radio-isotopes
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Areas of interest- Activation and damage measurements
- Activation of accelerator components and environmental samples
- Damage to electronics and magnets- Shielding measurements: attenuation of muons,
neutrons, etc- Measurements of radiation source terms:
- Photomuon production: Crucial for shielding of HE e- beams at zero degree angles (e.g. LCLS)
- Neutron spectra measurements at HE (TOF)- Photonuclear production, angular spectra.
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3 experiments in 3 years- Activation and damage measurements
- Activation of accelerator components and environmental samples
- Damage to electronics and magnets- Shielding measurements: attenuation of muons,
neutrons, etc- Measurements of radiation source terms:
- Photomuon production: Crucial for shielding of HE e- beams at zero degree angles (e.g. LCLS)
- Neutron spectra measurements at HE (TOF)- Photonuclear production, angular spectra.
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1) Activation & damage experimentBeam parameters Value Comments
Particle Type e-Energy 4.0 GeV, 13 GeVRep Rate Total: 1E16 e-
Preferably ~30 WCharge per pulseEnergy SpreadBunch length rmsBeam spot size, x-y Known within 5 %Others (emittance, …) Total charge known
within 2 %
Logistics RequirementsSpace requirements (H x W x L) 5 m width x 5 m lengthDuration of Test and Shift Utilization 1 week
Desired Calendar Dates Q1 2012
7ESTB Workshop 2011, March 17, 2011
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2) Muon production & shieldingBeam parameters Value Comments
Particle Type e-
Energy 4 GeV, 13 GeV
Rep Rate Max available
Charge per pulse Max available
Energy Spread Known within 5 %
Bunch length rms
Beam spot size, x-y Known within 5 %
Others (emittance, …) Total charge known within 2 %
Logistics RequirementsSpace requirements (H x W x L) 20 m lengthDuration of Test and Shift Utilization 10 days
Desired Calendar Dates Q1 2013
8ESTB Workshop 2011, March 17, 2011
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3) Photo-neutron measurementsBeam parameters Value Comments
Particle Type e-Energy 100 MeV, 4 GeV,
10 GeVRep Rate 10-120 HzCharge per pulse Max available MonitoredEnergy SpreadBunch length rmsBeam spot size, x-yOthers (emittance, …) Total charge known
within 2%
Logistics RequirementsSpace requirements (H x W x L) 3 m x 10 m x 10 mDuration of Test and Shift Utilization 2 weeks
Desired Calendar Dates Q1 20149ESTB Workshop 2011, March 17, 2011