z

ANGUS

REGAE

calculation

measurement

Position (m)

Pressure

(mbar)

Pressure Profile along the REGAE Beamline

0 1 2 3 4 5 6 7 8 9 10

10−11

10−9

10−7

10−5

10−3

Beamline layout and pressure profile

Benno Zeitler1, R. Stark1, C. Werle1, N. Guse2, H. Delsim-Hashemi2, M. Hachmann2, K. Floettmann2, F. Grüner1 1Center for Free-Electron Laser Science & Department of Physics, University of Hamburg

2Deutsches Elektronen-Synchrotron DESY

CFELSCIENCE

Overview of theREGAE Beamline Upgrade

05K16GUB

We want to thank Theresa Staufer (CFEL/UHH) as well as Andreas Maier and the LUX and

ANGUS team (CFEL/UHH/DESY) for the strong support and helping hands.

>View into the new REGAE target chamber>First plasma at REGAE using the ANGUS laser>View along the upgraded REGAE beamline

collimators

gun bunchercavity

differentialpumping

targetchamber TDS eSpec diffraction

detector

final focussingparabola

in-couplingmirror

REGAE* Beamline Upgrade >Imaging system for photo-cathode laser >Separate rf system for buncher cavity >Connection to ANGUS laser system >Differential pumping section >Versatile target chamber >Gas distribution system >Beam arrival cavity (BAC) >Transverse deflecting structure (TDS) >Beam transport and eSpec >Laser- and electron diagnostics

Goals >Ultrafast electron diffraction (UED) >Beam dynamics studies/

phase space linearization >External injection into laser-driven

plasma wakefields

— *Relativistic Electron Gun for Atomic Exploration

benno.zeitler@desy.de

Imaging system of the photo-cathode laser

x10

electronslaser

Machine Parameters:

absolute rel. deviationbeam energy [MeV] 3.6495±0.0002 0.0001bunch charge [fC] 51.8±0.6 0.0116Beam intensity stability [a.u.] 2.359±0.009 0.0039Tot. intensity stability [a.u.] 93.8±0.1 0.0014

Intensity plot:

Total/beam intensity

0.00 0.02 0.04 0.06 0.082.12×106

2.22×106

2.32×106

2.42×106

2.52×106

2.62×106

9.×107

9.1×107

9.2×107

9.4×107

9.5×107

9.6×107

Bz,max [T]

Beam.Intensity

[a.u.]

Tot.Intensity

[a.u.]

Analytical emittance fit plot:

Sol_67@D2

0.00 0.02 0.04 0.06 0.080.1

0.2

0.3

0.4

0.5

0.6

0.7

Bz,max [T]

trans.beamsize

[mm]

hor.

vert.

Fit Parameters:ϵn [π mm mrad] x0,RMS [mm] (x0,RMS)' [μrad] θmin [rad] χred2

hor. 0.074±0.002 0.355±0.003 21.±1. 1.56 1.3vert. 0.059±0.002 0.285±0.003 24.±1. 1.56 1.

Comment:

Machine Parameters:

absolute rel. deviationbeam energy [MeV] 3.6495±0.0002 0.0001bunch charge [fC] 51.8±0.6 0.0116Beam intensity stability [a.u.] 2.359±0.009 0.0039Tot. intensity stability [a.u.] 93.8±0.1 0.0014

Intensity plot:

Total/beam intensity

0.00 0.02 0.04 0.06 0.082.12×106

2.22×106

2.32×106

2.42×106

2.52×106

2.62×106

9.×107

9.1×107

9.2×107

9.4×107

9.5×107

9.6×107

Bz,max [T]

Beam.Intensity

[a.u.]

Tot.Intensity

[a.u.]

Analytical emittance fit plot:

Sol_67@D2

0.00 0.02 0.04 0.06 0.080.1

0.2

0.3

0.4

0.5

0.6

0.7

Bz,max [T]

trans.beamsize

[mm]

hor.

vert.

Fit Parameters:ϵn [π mm mrad] x0,RMS [mm] (x0,RMS)' [μrad] θmin [rad] χred2

hor. 0.074±0.002 0.355±0.003 21.±1. 1.56 1.3vert. 0.059±0.002 0.285±0.003 24.±1. 1.56 1.

Comment:

Machine Parameters:

absolute rel. deviationbeam energy [MeV] 3.6495±0.0002 0.0001bunch charge [fC] 51.8±0.6 0.0116Beam intensity stability [a.u.] 2.359±0.009 0.0039Tot. intensity stability [a.u.] 93.8±0.1 0.0014

Intensity plot:

Total/beam intensity

0.00 0.02 0.04 0.06 0.082.12×106

2.22×106

2.32×106

2.42×106

2.52×106

2.62×106

9.×107

9.1×107

9.2×107

9.4×107

9.5×107

9.6×107

Bz,max [T]

Beam.Intensity

[a.u.]

Tot.Intensity

[a.u.]

Analytical emittance fit plot:

Sol_67@D2

0.00 0.02 0.04 0.06 0.080.1

0.2

0.3

0.4

0.5

0.6

0.7

Bz,max [T]

trans.beamsize

[mm]

hor.

vert.

Fit Parameters:ϵn [π mm mrad] x0,RMS [mm] (x0,RMS)' [μrad] θmin [rad] χred2

hor. 0.074±0.002 0.355±0.003 21.±1. 1.56 1.3vert. 0.059±0.002 0.285±0.003 24.±1. 1.56 1.

Comment:

Commissioning of the knife edge diagnostics

combined fit:σ = 59 μm

DaMon2 fit: σ = 57 μm

DET2 fit: σ = 61 μm

DaMon2 data

DET2 data

norm

alizedintensity

knife edge position in μm

0 50 100 150 200 250 300

0

0.2

0.4

0.6

0.8

1

combined fit:σ = 59 μm

DaMon2 fit: σ = 57 μm

DET2 fit: σ = 61 μm

DaMon2 data

DET2 data

norm

alizedintensity

knife edge position in μm

0 50 100 150 200 250 300

0

0.2

0.4

0.6

0.8

1

35343332313029

28272625242322

21201918171615

141312111098

7654321

Commissioning of the transverse deflecting structure (TDS)

to laserdiagnostics

calculation

measurement

Position (m)

Pressure

(mbar)

Pressure Profile along the REGAE Beamline

0 1 2 3 4 5 6 7 8 9 10

10−11

10−9

10−7

10−5

10−3

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