F erninfrarot L inac- U nd T est E xperiment KIT University of the - - PowerPoint PPT Presentation

ANKA Synchrotron Radiation Facility 1 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

KIT – University of the State of Baden-Wuerttemberg and National Research Center of the Helmholtz Association

KIT DESY PSI

www.kit.edu

Ab initio method for dose estimation in a linear electron accelerator

• P. Wesolowski, E. Bründermann, M. Hagelstein, E. Huttel, A.-S. Müller,
• R. Ruprecht, M. Schuh, M. Schwarz, O. Zwernemann

Radsynch17, Hsinchu, Taiwan, 20.04.2017

Ferninfrarot Linac- Und Test Experiment

ANKA Synchrotron Radiation Facility 2 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility Ab initio method for dose estimation in a linear electron accelerator

• P. Wesolowski

2

FLUTE (here radiation safety related, s. overview talk M. Hagelstein)

Building Assets Issues and solutions RS-related components

Estimations for approval license

Gamma dose from absorber Air activation in hall

• (Gamma,n)
• (thermal n, Gamma)
• Spallation

Outline

FLUTE – Ferninfrarot Linac- Und Test-Experiment

2

ANKA Synchrotron Radiation Facility 3 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

3

FLUTE Building and assets

Using across diagonal Leaves space for upgrades / new devices ANKA (expertise, RSOs) On site of a former nuclear research facility (expertise,

restricted access)

FLUTE ANKA KIT Campus North

~15 m Experimental hall

Laser clean room THz measure- ment room Control room Air lock

Ab initio method for dose estimation in a linear electron accelerator

3

ANKA Synchrotron Radiation Facility 4 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

4

Inherited row building

Former experimental / irradiation hall of a isochronous cyclotron for isotope production basement (hist.)

15m x 13m x 12m(h) hall >1.5 meter concrete walls Thick revolving door

hall (hist.) door

Ab initio method for dose estimation in a linear electron accelerator

4

ANKA Synchrotron Radiation Facility 5 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

5

Very good for the start, but…

 Decontamination (clearance procedure) … provided by Safety Department of KIT  Approval license… support by Safety Department of KIT (Unit Consulting & Approvals Licensing)  Unknown dark currents in the gun  Despite of thick walls – local shielding is crucial

Ab initio method for dose estimation in a linear electron accelerator

5

ANKA Synchrotron Radiation Facility 6 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

6

FLUTE layout Phase 2

Klystron Laser driven- injector rf gun Beam dump (schematic)

Final electron energy ~ 41 MeV Electron bunch charge 0.001 - 3 nC Electron bunch length 1 - 300 fs Pulse repetition rate 10 Hz THz E-Field strength up to 1.2 GV/m

M.J. Nasse et al., Rev. Sci. Instrum. 84, 022705 (2013)

Ab initio method for dose estimation in a linear electron accelerator

Phase 1 7 MeV Phase 2 41 MeV 6

ANKA Synchrotron Radiation Facility 7 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

7

Radiation safety related components

3 GHz rf-gun 3 GHz linac old 3 GHz linac brand new Klystron Beam guidance Movable screens Slits Magnetic chicane Dump Hall volume

Ab initio method for dose estimation in a linear electron accelerator

7

ANKA Synchrotron Radiation Facility 8 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility Ab initio method for dose estimation in a linear electron accelerator

• P. Wesolowski

8

3 GHz gun

Property Unit Value Frequency GHz 2.998 Cells 2.5 Peak E-Field MV/m ~120 Peak power MW ~20 Output energy MeV 7

4MeV scanner (German Cancer Research Center, Heidelberg)

8

ANKA Synchrotron Radiation Facility 9 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

9

Dark currents issue in the gun

• F. Le Pimpec et al, Dark Current Studies for SwissFEL,

http://arxiv.org/pdf/1205.3098.pdf

High peak gradient of rf field causes a spontaneous electron emission on the inner walls of the cavity wherever this gradient meets the metal surface. This dark current is strongly dependent on gradient and impurities, while it is not dependent on laser pulse. Dark current electrons not matching rf fields (most electrons do not!) will be lost downstream the beam direction and produce bremsstrahlung in the vacuum tube and linac cavity walls.

CTF3 gun charge emission vs accelerating field Histogram of the particle losses at the walls of the accelerator up to the end of the second S-band cavity (132 MeV).

Ab initio method for dose estimation in a linear electron accelerator

9

ANKA Synchrotron Radiation Facility 10 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

10

3 GHz linac

Measured at PSI 10.08.2012:

900 nSv/h

in 1cm distance from a hotspot. Linac decommissioned in 1996. Co-60 5.27a

Ab initio method for dose estimation in a linear electron accelerator

nuclide Activation (Bq) K-40 8.68E+00 Co-60 8.13E+01 SUM 9.00E+01

1

ANKA Synchrotron Radiation Facility 11 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

11

Demanding… but generous Authority

Plausible quantification of activation Coarse estimation for phase 2 activation expected before phase 1 started Labyrinthed feedthroughs Usable current as a base (matching issue of electrons in gun and linac) Adequate neutron shielding Operational measurements of activation

Ab initio method for dose estimation in a linear electron accelerator

1

ANKA Synchrotron Radiation Facility 12 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

12

Components / media exposed to radiation

Ab initio method for dose estimation in a linear electron accelerator

Gun, linac Dump - aluminum absorber Dump - air gap Dump - lead shielding Neutron shielding Hall air Hall air

• Electrons
• Electrons
• Gammas
• Gammas
• Gammas
• Gammas
• Neutrons

exposed to component

1

ANKA Synchrotron Radiation Facility 13 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

13

Beam dump (Phase 2)

Aluminum absorber Some activation, e.g., with 24Na (t1/2=2.60y) is expected.

electron beam power W 13.5 conversion efficiency % 33 gamma radiation power W 4.4550 distance m 10 local dose rate W/m2 0.0035 a_phantom m 0.4 m_phantom kg 64.0 abs dose phantom mJ/kg/s 0.0089 abs dose phantom J/kg/h 0.0319 allowed limit muSv/h 0.5 needed attenuation 63,800

Ab initio method for dose estimation in a linear electron accelerator

1

ANKA Synchrotron Radiation Facility 14 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

14

COMPONENTS: Beam dump (Phase 2)

rho 1/mu shieldattenuation g/cm3 cm cm concrete 2.5 20.00 150 1858 Pb 11.3 2.21 16.7 1898

Factor 63,800 Still factor 34

Pb 12.3 2.21 5 10

Pb shield Air gap Al absorber

Some 8 cm of lead do the job But…

Ab initio method for dose estimation in a linear electron accelerator

1

ANKA Synchrotron Radiation Facility 15 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

15

Air (Gamma, n)

Nuclides

15O (t1/2=2 Min) 13N (t1/2=9.9 Min) Cossairt, p. 64

Pb shield beam power shielded hall volume path attenuation kW kW m3 m 700 0.0135 1.92857E-05 1700 10 specifcic saturation total activity activation (MBq/m/kW MBq MBq/m3 13N 5.20E+02 1.00E-01 5.90E-05 15O 5.55E+01 1.07E-02 6.30E-06

Ab initio method for dose estimation in a linear electron accelerator

Unit !

1

ANKA Synchrotron Radiation Facility 16 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

16

Air (nthermal, Gamma)

Nuclides

41Ar (t1/2=1.83 h) 14C (t1/2=5700 a) Cossairt, p. 76 Ab initio method for dose estimation in a linear electron accelerator Neutron yields from infinitely thick targets per kW of electron beam power as a function of electron beam energy Eo, ignoring target self-shielding.

Moderation factor All neutrons 1

ANKA Synchrotron Radiation Facility 17 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

17

Air (nthermal, Gamma)

Nuklides

41Ar (t1/2=1.83 h) 14C (t1/2=5700 a) Ab initio method for dose estimation in a linear electron accelerator

Σ = N x s with: Σ = macroscopic cross section [1/m] N = atom density of target [Atoms/m3] s = mikroscopic cross section [m2] Makroscopic convention for activation equation: A(t) = Σ x N0 x R x [1-exp(-λ t)] with: A(t) = total activation [1/s] = [Bq] N0 = total neutron flux per second [1/s] R = characteristic dimension of system [m] λ = decay rate [1/s]

Saturation far from saturation: air exchange time in the hall as a base

Numerical values will be summarized

1

ANKA Synchrotron Radiation Facility 18 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

18

Air (spallation)

Nuclid

11C (t1/2=20.3 Min) Ab initio method for dose estimation in a linear electron accelerator

saturation parent element

14N

Numerical values will be summarized

Σ = N x s with: Σ = macroscopic cross section [1/m] N = atom density of target [Atoms/m3] s = mikroscopic cross section [m2] Makroscopic convention for activation equation: A(t) = Σ x N0 x R x [1-exp(-λ t)] with: A(t) = total activation [1/s] = [Bq] N0 = total neutron flux per second [1/s] R = characteristic dimension of system [m] λ = decay rate [1/s]

1

ANKA Synchrotron Radiation Facility 19 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

19

Hall air activation due to exposition to locally shielded radiation – Phase 2

Appendix VII of StrlSchV (German radiation safety ordinnance)

Ab initio method for dose estimation in a linear electron accelerator

App VII

• App. VII

1 1a 2 3 4 5 6 7 nuclide tau 1/2 activation activation inhalation submersion limit exploited per vol Tab 4 Tab 5 regulation h Bq Bq/m3 Bq/m3 Bq/m3 by StrlSchV 13N 1.66E-01 1.00E+05 5.90E+01 n.a. 2.00E+03 2.00E+04 2.95E-03 15O 3.39E-02 1.07E+04 6.30E+00 n.a. 1.00E+03 1.00E+04 6.30E-04 14C 4.99E+07 5.15E+00 3.03E-03 6.00E+00 n.a. 6.00E+01 5.05E-05 41Ar 1.83E+00 6.94E+04 4.08E+01 n.a. 2.00E+02 2.00E+03 2.04E-02 11C 3.39E-01 3.77E+04 2.22E+01 6.00E+02 3.00E+03 6.00E+03 3.69E-03 Sum 2,18E+05 1.28E+02 3.81E+04 0.028

accepted Lower value of columns 4 and 5 is taken and multiplied with factor 10 as allowed for air flows under 10000 m3/h in the hall.

1

ANKA Synchrotron Radiation Facility 20 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

20

Conclusion

• A short RS-tour of FLUTE was given
• A straightforward method was used for radiation

dose originating from the dump

• Air activation estimations were presented for

selected reactions

• Approval license was granted by the Authority

Ab initio method for dose estimation in a linear electron accelerator

2

ANKA Synchrotron Radiation Facility 21 ANKA Users‘ Meeting, 13.-14.10.2014 nasse@kit.edu FLUTE – A versatile linac-based source

• f intense far-infrared / THz pulses

Compare different coherent THz radiation generation schemes in simulation and experiment:

Coherent Synchrotron Radiation (CSR) Coherent Edge Radiation (CER) Coherent Transition Radiation (CTR)

Systematic bunch compression studies:

Different compression schemes Wide charge range from 1 pC up to 3 nC per bunch Wide bunch length range from 1 fs up to 300 fs

Create intense THz radiation:

Spectral range up to 10 THz Up to 1 mJ energy per pulse High electric peak fields of several MV/cm

Serve as a test bench:

New beam diagnostics methods and tools Synchronization on a fs level

Project Goals

ANKA Synchrotron Radiation Facility

• P. Wesolowski

21

Thank you for your attention

Ab initio method for dose estimation in a linear electron accelerator

2