M. Dohlus

Explicit TE/TM Scheme for Particle Beam Simulations (2009)

Dohlus, M., Zagorodnov, I.

In this paper we propose an explicit two-level conservative scheme based on a TE/TM like splitting of the field components in time. Its dispersion properties are adjusted to accelerator problems. It...

Microbunch Amplification in the European XFEL. (2009)

M. Clemens, DESY Maschinenphysik, M. Dohlus, S. Lange, G. Pöplau, T. Limberg, ...

Internal report | Preprint

The Effect of the Metal Oxidation on the Vacuum Chamber Impedance. (2009)

A. Tsakanian, DESY Maschinenphysik, M. Dohlus, I. Zagorodnov

Internal report | Preprint

Status of the 3rd Harmonic Systems for FLASH and XFEL in Summer 2008. 2008-09-29 - 2008-10-03 (2008)

E. Vogel, DESY Maschinenphysik, A. Bosotti, W. Decking, M. Dohlus, ...

Contribution to a conf. proceeding (book/online)

Wakefield and RF Kicks due to Coupler Asymmetry in TESLA-type Accelerating Cavities. 2008-06-23 - 2008-06-27 (2008)

DESY Maschinenphysik, C. Adolphsen, Z. Li, M. Dohlus, ...

Contribution to a conf. proceeding (book/online)

Coupler Kick for Very Short Bunches and its Compensation. 2008-06-23 - 2008-06-27 (2008)

M. Dohlus, DESY Maschinenphysik, I. Zagorodnov, E. Gjonaj, T. Weiland

Contribution to a conf. proceeding (book/online)

Numerical Studies of Resistive Wall Effects. 2008-06-23 - 2008-06-27 (2008)

A. Tsakanian, DESY Maschinenphysik, M. Dohlus, I. Zagorodnov

Contribution to a conf. proceeding (book/online)

Transverse Effects due to Vacuum Mirror of RF Gun. 2008-06-23 - 2008-06-27 (2008)

M. Dohlus, DESY Maschinenphysik, I. Zagorodnov, M. Krasilnikov, E. Gjonaj, ...

Contribution to a conf. proceeding (book/online)

Explicit TE/TM Scheme for Particle Beam Simulations. (2008)

M. Dohlus, DESY Maschinenphysik, I. Zagorodnov

Internal report | Preprint

Ultraviolet and Soft X-Ray Free-Electron Lasers. Introduction to Physical Principles, Experimental Results, Technological Challenges. (2008)

P. Schmüser, DESY Forschung Hochenergiephysik, M. Dohlus, J. Rossbach

Contribution to a book

Investigation Of The Impedance And Higher Order Mode Losses For Proposed Beam Pipe Configurations For The Hera Luminosity Upgrade Project (2007)

Dohlus Wipf Deutsches, M. Dohlus, S. G. Wipf

The impedance and wakefield effects and higher order mode losses have been investigated for the Luminosity Upgrade Project at HERA for three regions where only minimal heating can be tolerated. These...

S-Band Hom-Damper Calculations And Experiments (2007)

M. Dohlus, M. Marx, N. Holtkamp, P. Hülsmann, M. Kurz, ...

Damper cells for higher order modes are necessary for the S-band linear collider to suppress higher order dipole modes, which are harmful to the beam. It is foreseen to employ two single cell damper...

Resonance Frequencies and Q-factors of Multi- Resonance Complex Electromagnetic Systems (2007)

M. Dohlus, V. Kaljuzhny, S. G. Wipf

We present the calculation results for a lossless TTF cavity-coupler unit, for combination cavity-coupler units and for an 8-cavity accelerating module, at the frequency band corresponding to third...

Operation of a free electron laser from the extreme ultraviolet to the water window (2007)

Ackermann, W., Asova, G., Ayvazyan, V., Azima, A., Baboi, N., Bähr, J., ...

We report results on the performance of a free electron laser operating at a wavelength of 13.7 nm where unprecedented peak and average powers for a coherent EUV radiation source have been measured....

Operation of a free electron laser from the extreme ultraviolet to the water window (2007)

Ackermann, W., Asova, G., Ayvazyan, V., Azima, A., Baboi, N., Bähr, J., ...

We report results on the performance of a free electron laser operating at a wavelength of 13.7 nm where unprecedented peak and average powers for a coherent EUV radiation source have been measured....

Velocity bunching at the European XFEL. 2007-06-25 - 2007-06-29 (2007)

B. Beutner, W. Decking, M. Dohlus, K. Floettmann, ...

Contribution to a conf. proceeding (book/online)

Coupler Kick. 2007-05-30 - 2007-06-03 (2007)

I. Zagorodnov, DESY Maschinenphysik, M. Dohlus

Contribution to a conf. proceeding (book/online)

Operation of a Free-electron Laser from the Extreme Ultraviolet to the Water Window. (2007)

W. Ackermann, DESY Maschinenphysik, G. Asova, V. Ayvazyan, A. Azima, N. Baboi, ...

Journal article

Operation of a free-electron laser from the extreme ultraviolet to the water window (2007)

W. Ackermann, G. Asova, V. Ayvazyan, A. Azima, N. Baboi, ...

Journal article

Considerations on the Third Harmonic RF of the European XFEL. 2007-10-15 - 2007-10-19 (2007)

E. Vogel, DESY Maschinenphysik, M. Dohlus, H. Edwards, E. Harms, ...

Contribution to a conf. proceeding (book/online)

First operation of a free-electron laser generating GW power radiation at 32 nm wavelength (2006)

Ayvazyan, V., Baboi, N., Bähr, J., Balandin, V., Beutner, B., Brandt I., A., ...

Many scientific disciplines ranging from physics, chemistry and biology to material sciences, geophysics and medical diagnostics need a powerful X-ray source with pulse lengths in the femtosecond...

First operation of a free-electron laser generating GW power radiation at 32 nm wavelength (2006)

Ayvazyan, V., Baboi, N., Bähr, J., Balandin, V., Beutner, B., Brandt I., A., ...

Many scientific disciplines ranging from physics, chemistry and biology to material sciences, geophysics and medical diagnostics need a powerful X-ray source with pulse lengths in the femtosecond...

Impact of Undulator Wakefields and Tapering on the European FEL Performance. 2006-06-26 - 2006-06-30 (2006)

I. Zagorodnov, DESY Maschinenphysik, M. Dohlus, T. Limberg

Contribution to a conf. proceeding (book/online)

Beam Dynamics Experiments and Analysis on CSR Effects at FLASH. 2006-08-27 - 2006-09-01 (2006)

B. Beutner, W. Decking, M. Dohlus, T. Limberg, ...

Contribution to a conf. proceeding (book/online)

Modelling of Space Charge and CSR Effects in Bunch Compressor Systems. 2006-06-26 - 2006-06-30 (2006)

M. Dohlus, DESY Maschinenphysik

Contribution to a conf. proceeding (book/online)

Computational Needs for XFELs. 2006-10-02 - 2006-10-06 (2006)

M. Dohlus, DESY Maschinenphysik

Contribution to a conf. proceeding (book/online)

Design and Operation of a Ferrite Loaded Kicker Cavity for the Longitudinal Coupled Bunch Feedback for HERA-p. 2006-06-26 - 2006-06-30 (2006)

J. Randhahn, DESY Maschinenphysik, S. Choroba, M. Dohlus, M. Ebert, ...

Contribution to a conf. proceeding (book/online)

Applications of Parallel Computational Methods to Charged-Particle Beam Dynamics. (2006)

A. Kabel, DESY Maschinenphysik, Y. Cai, M. Dohlus, T. Sen, R. Uplenchwar

Journal article

Numerical Minimization of Longitudinal Emittance in Linac Structures. 2006-10-02 - 2006-10-06 (2006)

S. Lange, DESY Maschinenphysik, M. Clemens, L.O. Fichte, M. Dohlus, ...

Contribution to a conf. proceeding (book/online)

First operation of a free- electron laser generating GW power radiation at 32 nm wavelength. (2006)

V. Ayvazyan, N. Baboi, J. Bähr, V. Balandin, B. Beutner, ...

Journal article

Overview of CSR Codes. (2006)

G. Bassi, DESY Maschinenphysik, T. Agoh, M. Dohlus, L. Giannessi, R. Hajima, ...

Journal article

XFEL - The European X-Ray Free-Electron Laser - Technical Design Report (2006)

A. Aghababyan, M. Altarelli, C. Altucci, G. Amatuni, P. Anfinrud, ...

Book

Overview of CSR Codes (2006)

Bassi, G, Agoh, T, Dohlus, M, Giannessi, L, Hajima, R, Kabel, A, ...

Start-to-End Simulations of SASE FEL at the TESLA Test Facility, Phase 1 (2003)

Dohlus, M., Floettmann, K., Kozlov, O. S., Limberg, T., Schneidmiller, E. A., ...

Phase 1 of the vacuum ultra-violet (VUV) free-electron laser (FEL) at the TESLA Test Facility (TTF) recently concluded operation. It successfully demonstrated the saturation of a SASE FEL in the in...

A new powerful source for coherent VUV radiation: Demonstration of exponential growth and saturation at the TTF free-electron laser (2002)

Ayvazian, V., Baboi, N., Bohnet, I., Brinkmann, R., Castellano, M., Castro, P., ...

Generation of GW radiation pulses from a VUV free- electron laser operating in the femtosecond regime (2002)

Ayvazyan, V., Baboi, N., Bakker, R., Balakin, V., Barni, D., Bazhan, A., ...

A new powerful source for coherent VUV radiation: Demonstration of exponential growth and saturation at the TTF free-electron laser (2002)

Ayvazian, V., Baboi, N., Bohnet, I., Brinkmann, R., Castellano, M., Castro, P., ...

Generation of GW radiation pulses from a VUV free- electron laser operating in the femtosecond regime (2002)

Ayvazyan, V., Baboi, N., Bakker, R., Balakin, V., Barni, D., Bazhan, A., ...

Higher Order Mode Absorption in TTF (2002)

Modules In The, M. Dohlus, V. Kaljuzhny, S. G. Wipf

One of the sources of transverse emittance dilution in the superconducting e linear collider TESLA are transverse wakefields of higher frequency modes (HOM) excited in the accelerating cavities by...

Impedance of Beam Pipes with Smooth Shallow Corrugations (2001)

Dohlus Deutsches Elektronen, M. Dohlus

The beam impedance of monopole modes in a pipe with periodic, smooth and shallow corrugation has been calculated. The approach uses an orthogonal TM field expansion with Bessel functions and an...

Numerical Calculation of Coherent Synchrotron Radiation Effects Using TraFiC4 (2000)

Kabel, A., Dohlus, M., Limberg, T.

Coherent synchrotron radiation (CSR) occurs when short bunches travel on strongly bent trajectories. Its effects on high-quality beams can be severe and are well understood qualitatively. For...

Rectangular Waveguide HOM Couplers for a TESLA Superstructure (2000)

Blednykh, A., Kostin, D., Kaljuzhny, V., Lalayan, M., Milovanov, O., Ponomarenko, A., ...

Some modifications of a Rectangular Waveguide HOM couplers for TESLA superstructure have been investigated. These RWG HOM couplers are to be installed between the cavities of the superstructure and...

First observation of self-amplified spontaneous emission in a free-electron laser at 109 nm wavelength (2000)

Andruszkow, J., Aune, B., Ayvazian, V., Baboi, N., Bakker, R., Balakin, V., ...

We present the first observation of self-amplified spontaneous emission (SASE) in a free-electron laser (FEL) in the vacuum ultraviolet regime at 109 nm wavelength (11 eV). The observed free-electron...

First observation of self-amplified spontaneous emission in a free-electron laser at 109 nm wavelength (2000)

Andruszkow, J., Aune, B., Ayvazian, V., Baboi, N., Bakker, R., Balakin, V., ...

We present the first observation of self-amplified spontaneous emission (SASE) in a free-electron laser (FEL) in the vacuum ultraviolet regime at 109 nm wavelength (11 eV). The observed free-electron...

First observation of self-amplified spontaneous emission in a free-electron laser at 109 nm wavelength (2000)

Andruszkow, J., Aune, B., Ayvazian, V., Baboi, N., Bakker, R., Balakin, V., ...

We present the first observation of self-amplified spontaneous emission (SASE) in a free-electron laser (FEL) in the vacuum ultraviolet regime at 109 nm wavelength (11 eV). The observed free-electron...

First observation of self-amplified spontaneous emission in a free-electron laser at 109 nm wavelength (2000)

Andruszkow, J., Aune, B., Ayvazian, V., Baboi, N., Bakker, R., Balakin, V., ...

We present the first observation of self-amplified spontaneous emission (SASE) in a free-electron laser (FEL) in the vacuum ultraviolet regime at 109 nm wavelength (11 eV). The observed free-electron...

First observation of self-amplified spontaneous emission in a free-electron laser at 109 nm wavelength (2000)

Andruszkow, J., Aune, B., Ayvazian, V., Baboi, N., Bakker, R., Balakin, V., ...

We present the first observation of self-amplified spontaneous emission (SASE) in a free-electron laser (FEL) in the vacuum ultraviolet regime at 109 nm wavelength (11 eV). The observed free-electron...

Wakefield induced Losses in the Manual Valves of the TESLA Cryomodule (2000)

Dohlus Wedekind Zapfe, M. Dohlus, K. Zapfe

The beam pipe of the TESLA cryomodule is closed off by manual valves on both sides of the string of 12 cavities. Compared to the manual valves with spring type rf-shield which are presently used in...

Computation of the short and long range wake in periodic circular symmetric accelerating structures using the field matching technique (1999)

Jöstingmeier, A, Dohlus, M

Rectangular waveguide coupler for two TESLA supercavities (1999)

Boster, J, Dicke, J, Dohlus, M, Hartwig, H, Holtkamp, N, Jöstingmeier, A, ...

Filling and beam loading in TESLA superstructures (1999)

Dohlus, M, Glock, H W, Hecht, D L, Van Rienen, U

Comparison of the beam parameters corresponding to corrugated circular waveguides and planar gratings (1999)

Jöstingmeier, A, Dohlus, M

Application of the mode matching technique for the computation of the beam parameters of an infinite periodic structure (1999)

Jöstingmeier, A, Dohlus, M, Holtkamp, N

Computation of the absorption characteristics of a two-dimensional rectangular waveguide array using the mode matching technique (1998)

Jöstingmeier, A, Dohlus, M, Holtkamp, N

Estimation of longitudinal wakefield effects in the TESLA-TTF FEL undulator beam pipe and diagnostic section (1998)

Dohlus, M, Lorenz, R, Kamps, T, Schlarb, H, Wanzenberg, R

Design of a high power standing wave test resonator for SBLC cells (1997)

Kaljuzhny, V E, Yarigin, S N, Dohlus, M, Holtkamp, N, Wipf, S

High-power test of the iris coating in the S-Band Linear-Collider (1996)

Dohlus, M, Hartwing, H, Holtkamp, N, Jin, K, Jöstingmeier, A, Kaljuzhny, V E, ...

Higher order mode damping by artificially increased surface losses (1996)

Dohlus, M, Hartwig, H, Holtkamp, N, Ivanov, S, Kaljuzhny, V E, Naboka, A

Compensation of large reflections in travelling wave accelerating sections by special tuning (1996)

Kaljuzhny, V E, Dohlus, M, Holtkamp, N

Electrodynamic characteristics of the SBLC accelerating structure (1996)

Kostin, D V, Kandrunin, V V, Sobenin, N P, Yarigin, S N, Zverev, N V, Dohlus, M, ...

Investigation of a hybrid coupler for a 6 meter S-band linear collider accelerating structure (1996)

Kaljuzhny, V E, Kostin, D V, Ivanov, S V, Milovanov, O S, Nechaev, N N, Parfenov, A N, ...

Tuning of 5.2 metre long tapered S-band traveling wave accelerating section (1996)

Dohlus, M, Holtkamp, N, Kaljuzhny, V E, Naboka, A

Studies on a free electron laser for the TESLA test facility (1995)

Rossbach, J, Saldin, E L, Schneidmiller, E A, Mosnier, A, Bacher, R, Brefeld, W, ...

Spurious oscillations in high power klystrons (1995)

Krietenstein, B, Ko, K, Lee, T, Becker, U, Weiland, T, Dohlus, M

Comparison of CONDOR, FCI and MAFIA calculations for a 150MW S-band klystron with measurements (1995)

Becker, U, Weiland, T, Dohlus, M, Lütgert, S, Sprehn, D

The S-Band 36-cell experiment (1995)

Krietenstein, B, Podebrad, O, Van Rienen, U, Weiland, T, Glock, H W, Hülsmann, P, ...

S-band HOM-damper calculations and experiments (1995)

Dohlus, M, Marx, M, Holtkamp, N, Hülsmann, P, Müller, W F, Kurz, M, ...

Some remarks on the location of higher order modes in tapered accelerating structures with the use of a coupled oscillator model (1995)

Romanov, G V, Ivanov, S, Dohlus, M, Noltkamp, N

A new tuning method for traveling wave structures (1995)

Khabiboulline, T, Puntus, V, Dohlus, M, Holtkamp, N, Kreps, G, Ivanov, S

A method to overcome the bunch length limitation on $\beta_{p}*$ for electron-proton colliders (1995)

Brinkmann, R, Dohlus, M

Tuning of a 50-cell constant gradient S-band travelling wave accelerating structure by using a nonresonant perturbation method (1995)

Khabiboulline, T, Dohlus, M, Holtkamp, N

Investigations of field asymmetries in the asymmetric input coupler of the e+e- injector linac at DESY (1995)

Ivanov, S V, Dohlus, M, Holtkamp, N

Design and performance of a symmetric high power coupler for a 6 meter s-band linear collider accelerating structure (1995)

Kaljuzhny, V E, Kandrunin, V E, Kostin, D V, Ivanov, S V, Milovanov, O S, Nachaev, N N, ...

Measurement of the higher order mode (HOM) field distribution in a linac II accelerating section (1995)

Khabiboulline, T, Puntus, V, Ivanov, S, Jin, K, Dohlus, M, Holtkamp, N, ...

Spurious Oscillations In High Power Klystrons (1995)

B. Krietenstein, K. Ko, T. Lee, U. Becker, T. Weiland, M. Dohlus

Spurious oscillations in high power klystrons are found to occur in the gun region, in the cavities in the main body of the tube, or in the drift tunnel. The criteria that determine whether a mode...

Solution of Maxwell’s equations (1992)

Bartsch, M., Dehler, M., Dohlus, M., Ebeling, F., Hahne, P., Klatt, R., ...

Verlag erlaubt nur die Nutzung von Pre- und Post-Prints

Beam Dynamics Experiments and Analysis in FLASH on CSR and Space Charge Effects 2006-05-15 - 2006-05-19

B. Beutner, M. Dohlus, M. Röhrs

Conference presentation

Considerations on the Third Harmonic RF of the European XFEL. 2007-10-15 - 2007-10-19

E. Vogel, DESY Maschinenphysik, M. Dohlus, H. Edwards, E. Harms, ...

Poster

Status of the 3rd Harmonic Systems for FLASH and XFEL in Summer 2008. 2008-09-29 - 2008-10-03

E. Vogel, DESY Maschinenphysik, A. Bosotti, W. Decking, M. Dohlus, ...

Poster