1. Electron Beamlines Safety Workshop at ELI Beamlines 11-12 April 2016
Nikhil, Gabriele, Leonel, Roberto, Anna, Alberto
Safety Workshop at ELI Beamlines
11-12 April 2016

2. E2 - Betatron (up to 1 GeV, monochromatic or exponential spectrum)
E5 - HELL (up to 10 GeV, monochromatic or flat spectrum)
E5 - LUX (up to 1.2 GeV, monochromatic spectrum)

3. Dump Design Strategy GOAL MODULAR MATERIALS
< 1 mSv/year outside experimental halls
Compact, light-weight and low cost
MODULAR
Dump built from "bricks" of shielding materials
Add/remove "bricks" if experimental parameters change
MATERIALS
Restrict EM cascade inside cast iron
Shower absorption in concrete
Moderate back scattered neutrons in polyethylene
(borated if needed)

4. E2 - Betatron

5. E2 - Betatron Monochromatic (1 GeV) Exponential (40 MeV temperature)
Additional magnets placed external to the experimental chamber to direct the beam on to the dump
Cast iron core of the dump is 2m x 1m x 0.6m (bulky?)
Exponential (40 MeV temperature)
Affected by the internal magnet which disperses the beam
Long concrete wall as shielding
1 GeV monochromatic
DOSE RATE (mSv/year)
1 mSv/y
Exponential

6. E5 – HELL and LUX

7. E5 - LUX (Laser-driven Undulator X-ray)
BEAM DUMP
COLLIMATOR
Activation due to 500 MeV electrons on a concrete beam dump (1.2m x 1.8m x 2m)
Irradiation schedule (12 times per year)
5 consecutive days with 20 hours of operation per day
25 consecutive days with 2 hours of operation per day

8. E5 – HELL (High-energy Electron-acceleration by Laser)
User Station
Spectrometer
10 GeV beam
Spectrum: MeV flat
Irradiation of samples
Up to 10 Hz
Low noise
Low radiation damage
Minimize backscattering
No dedicated dump
Spectrum: 0-3 GeV flat
1 T x 60 cm magnetic field
Electron accelerator characterization
Variable charge
Variable spectrum
Muon production
Spectrum: 10 GeV
Increase of beam energy with time
Goals 10 GeV, 50 GeV
Variable charge
Variable spectrum
Muon production
Biolab downstream

9. E5 – HELL (High-energy Electron-acceleration by Laser)
User Station
Spectrometer
10 GeV beam
Spectrum: MeV flat
Irradiation of samples
Up to 10 Hz
Low noise
Low radiation damage
Minimize backscattering
No dedicated dump
Spectrum: 0-3 GeV flat
1 T x 60 cm magnetic field
Electron accelerator characterization
Variable charge
Variable spectrum
Muon production
Spectrum: 10 GeV
Increase of beam energy with time
Goals 10 GeV, 50 GeV
Variable charge
Variable spectrum
Muon production
Biolab downstream

10. E5 – HELL (High-energy Electron-acceleration by Laser)
User Station
Spectrometer
10 GeV beam
Spectrum: MeV flat
Irradiation of samples
Up to 10 Hz
Low noise
Low radiation damage
Minimize backscattering
No dedicated dump
Spectrum: 0-3 GeV flat
1 T x 60 cm magnetic field
Electron accelerator characterization
Variable charge
Variable spectrum
Muon production
Spectrum: 10 GeV
Increase of beam energy with time
Goals 10 GeV, 50 GeV
Variable charge
Variable spectrum
Muon production
Biolab downstream

11. E5 – HELL (High-energy Electron-acceleration by Laser)
User Station
Spectrometer
10 GeV beam
Spectrum: MeV flat
Irradiation of samples
Up to 10 Hz
Low noise
Low radiation damage
Minimize backscattering
No dedicated dump
Spectrum: 0-3 GeV flat
1 T x 60 cm magnetic field
Electron accelerator characterization
Variable charge
Variable spectrum
Muon production
Spectrum: 10 GeV
Increase of beam energy with time
Goals 10 GeV, 50 GeV
Variable charge
Variable spectrum
Muon production
Biolab downstream

12. Thank you!