Prof. Dr. Dr. h. c. R. Sauerbrey | Scientific Director | The HZDR Program towards a Helmholtz beamline at XFEL Roland Sauerbrey Helmholtz-Zentrum.

Prof. Dr. Dr. h. c. R. Sauerbrey | Scientific Director | www.hzdr.de

The HZDR Program towards a Helmholtz beamline at XFEL

Roland Sauerbrey

Helmholtz-Zentrum Dresden-Rossendorf


Member of the Helmholtz Association

Foundation 01.01.1992 (e.V.)

Employees ca. 800including ca. 260 scientists + 120 doctoral students

as well as employees and guest scientists from more than

40 countries

Budget Public funding (2011) ca. 84 Mio. €Saxon investment program ca. 70 Mio.

€(2010 - 2014)Third-party funding and other sources ca. 20 Mio.

€

HZDR – Facts and Figures


Ion Beam Center

Radiation Source ELBE Free-Electron-Lasers High-Intensity Laser

Rossendorf Beamline ROBL at the ESRF

TOPFLOW Facility

High Magnetic Field Laboratory Dresden

PET Center

Advanced Materials ResearchHow does matter behave in strong fields and at small dimensions?

Nuclear Safety ResearchHow can the public and the environment be protected from technical risks?

Cancer ResearchHow can cancerous tumors be identified in the early stages and treated effectively?

Research Questions and Large-Scale Facilities


Concept:Unique combination of:

high-power high-brilliance CW electron beams, synchronized with high rep-rate, ultra-high intensity lasers.

Development of:new radiation sources, in unique combinations, enablingstudy of matter under extreme conditions & in new regimes.

Will constitute a prototype for future facilities:National Center for Radiation Research in Oncology-Dresden, and Helmholtz beamline at XFEL, or FAIR.

Center for high power radiation sources @ HZDR


20112010 2012 2013 2014 2015

ELBE Upgrades

High

Inte

nsity

Las

ers

Zentrum HSQ

Center for high power radiation sources @ HZDR


Center for high power radiation sources


PW area

Petawatt, Energy-Efficient Laser for Optical Plasma Experiments

Development of a 2nd generation directly diode laser pumped short pulse PW laser (design: 150J in 150fs, >1Hz rep. Rate, active medium Yb:CaF2 discs ) based on the 1st generation project POLARIS at IOQ Jena

Complemented by running 150TW Ti:Sapphirelaser Draco (upgrade to PW level in progress)


2 × 2 × 2 m34 × 2 × 0.1 m³ (table top)

(a) pump setup

4-pass pumping reducesreabsorption losses by 75%

(c) laser material cooling

Rod design Slab design Active Mirrors

Repetition rate 1/minRepetition rate 1-10Hz

(b) laser material

Brightness: ~100kW/cm2/srWavelength: 940 nm

Brightness: >1MW/cm2/srWavelength: 980 nm

Yb:FP glass Yb:CaF2

From POLARIS (IOQ Jena) to PEnELOPE (HZDR)


effects and problems to be investigated:

- de form ation of ligh t cone, b ire fringence, polarization e ffects - nonpertubative Q FT in strong laser fie lds - photon-photon scatte ring - e lectron-positron pa ir creation (in vacuum ), ...

Avetiss ian [14 ]: 10 W /cmP opov [15 ]: 10 W /cm

2

27 2

18

e -

e +

n

absorptive: pair production

Nonlinear QED


cprobeprobe I

Idn

d

15

42

QED regime:

• small photon energy (compared to mec2)

• highest intensity (yet low compared to Ic=4·1029W/cm2)

dispersive effect (vacuum polarization) calculated in lowest non-trivial order O(I) and O(ω2

probe) -> birefringence

phase shift

Laser-induced vacuum birefringence


cprobeprobe I

Idn

d

15

42phase shift

Resulting ellipticity

measurable ellipticity (intensity measurement)

2

0222 ~2/~

cprobe I

Iz

brilliant X-ray probe high intensity and interaction length

TH. Heinzl, et al.

Opt. Commun. 267, 318 (2006)


Proposed experimental realization

highest intensity

see talk by I. Uschmann


Prof. Dr. Dr. h. c. R. Sauerbrey | Scientific Director | The HZDR Program towards a Helmholtz beamline at XFEL Roland Sauerbrey Helmholtz-Zentrum.

Documents

sauerbrey scientific

high power radiation

radiation research

progress slide

figures slide

penelope hzdr slide

high reprate

ultrahigh intensity