I. Zagorodnov

NUMERICAL CALCULATION OF SMALL-ANGLE COLLIMATOR WAKEFIELDS FOR SHORT BUNCHES (2009)

I. Zagorodnov, T. Weil

Collimators are used to eliminate halo particles from the beam. To relax the wakefield effects a gradual transition from a large to a small aperture is used. However, the existing computer codes face...

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...

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

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

Internal report | Preprint

THE SHORT-RANGE TRANSVERSE WAKE FUNCTION FOR TESLA ACCELERATING STRUCTURE (2008)

T. Weil, I. Zagorodnov

The operation of a Free Electron Laser in TESLA project requires very short bunches. It results in a very long interaction length between the bunch and the wakefields. From this fact severe problems...

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

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....

Impedance Calculations of Non-Axisymmetric Transitions Using the Optical Approximation (2007)

Bane, K. L. F., Stupakov, G., Zagorodnov, I.

In a companion report, we have derived a method for finding the impedance at high frequencies of vacuum chamber transitions that are short compared to the catch-up distance, in a frequency regime...

Optical approximation in the theory of geometric impedance (2007)

Stupakov, G., Bane, K. L. F., Zagorodnov, I.

In this paper we introduce an optical approximation into the theory of impedance calculation, one valid in the limit of high frequencies. This approximation neglects diffraction effects in the...

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

I. Zagorodnov, DESY Maschinenphysik, M. Dohlus

Contribution to a conf. proceeding (book/online)

Conformal FDTD-Methods to Avoid Time Step Reduction with and without Cell Enlargement. (2007)

I. Zagorodnov, DESY Maschinenphysik, R. Schuhmann, T. Weiland

Journal article

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

Impedance Calculations of Nonaxisymmetric Transitions Using the Optical Approximation. (2007)

DESY Maschinenphysik, G. Stupakov, I. Zagorodnov

Journal article

Direct Measurement of the Transverse Wakefields of Tapered Collimators. (2007)

P. Tenenbaum, DESY Maschinenphysik, L. Eriksson, J. Irwin, R.K. Jobe, ...

Journal article

Impedance Minimization by Nonlinear Tapering. 2007-06-25 - 2007-06-29 (2007)

B. Podobedov, DESY Maschinenphysik, I. Zagorodnov

Contribution to a conf. proceeding (book/online)

Optical Approximation in the Theory of Geometric Impedance. (2007)

G. Stupakov, DESY Maschinenphysik, I. Zagorodnov

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

Optical Approximation in the Theory of Geometric Impedance. (2007)

G. Stupakov, DESY Maschinenphysik, I. Zagorodnov

Internal report | Preprint

Impedance Calculations of Non-Axisymmetric Transitions Using the Optical Approximation. (2007)

DESY Maschinenphysik, G. Stupakov, I. Zagorodnov

Internal report | Preprint

Indirect Methods for Wake Potential Integration. (2006)

I. Zagorodnov, DESY Maschinenphysik

Journal article

Wakefield Effects of New ILC Cavity Shapes. 2006-06-26 - 2006-06-30 (2006)

I. Zagorodnov, DESY Maschinenphysik, N. Solyak

Contribution to a conf. proceeding (book/online)

Wakefield Calculations for 3D Collimators. 2006-06-26 - 2006-06-30 (2006)

I. Zagorodnov, DESY Maschinenphysik

Contribution to a conf. proceeding (book/online)

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)

The Short-range Wakefields in the BTW Accelerating Structure of the ELETTRA LINAC. (2006)

P. Craievich, DESY Maschinenphysik, T. Weiland, I. Zagorodnov

Journal article

Time Domain Wake Field Computation with Boundary Element Method. (2006)

K. Fujita, DESY Maschinenphysik, H. Kawaguchi, I. Zagorodnov, T. Weiland

Journal article

A Simplified Conformal (SC) Method for Modeling Curved Boundaries in FDTD Without Time Step Reduction. 2006-06-11 - 2006-12-16 (2006)

R. Schuhmann, DESY Maschinenphysik, I. Zagorodnov, T. Weiland

Contribution to a conf. proceeding (book/online)

TE/TM Alternating Direction Scheme for Wake Field Calculation in 3D. (2006)

I. Zagorodnov, DESY Maschinenphysik, T. Weiland

Journal article

Wakefields in the LCLS Undulator Transitions. 2006-06-26 - 2006-06-30 (2006)

DESY Maschinenphysik, I. Zagorodnov

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

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

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

Book

Direct Measurement of Geometric and Resistive Wakefields in Tapered Collimators for the International Linear Collider (2006)

Watson, Nigel, Adey, D, Angal-Kalinin, Deepa, Arnold, R, Barlow, Roger John, Beard, Carl David, ...

Test Beam Studies at SLAC's End Station A, for the International Linear Collider (2006)

Woods, M, Adey, D, Adolphsen, C, Albrecht, M, Allison, WWM, Angal-Kalinin, Deepa, ...

A Test Facility for the International Linear Collider at SLAC End Station A, for Prototypes of Beam Delivery and IR Components (2005)

Woods, M., Erickson, R., Frisch, J., Hast, C., Jobe, R. K., Keller, L., ...

The SLAC Linac can deliver damped bunches with ILC parameters for bunch charge and bunch length to End Station A. A 10Hz beam at 28.5 GeV energy can be delivered there, parasitic with PEP-II...

Wake Fields Generated by the LOLA-IV Structure and the 3 rd Harmonic Section in TTF-II (2004)

I. Zagorodnov, T. Weil

In this report we estimate long- and short-range wake functions for new elements to be used in TESLA Test Facility (TTF) – II. The wake potentials of the LOLA-IV structure and the 3 rd harmonic...

TESLA Report 2003-23 NEAR-WALL WAKEFIELDS FOR OPTIMIZED GEOMETRY OF TTF 2 COLLIMATOR (2003)

I. Zagorodnov, T. Weil

Wakefields excited in the small aperture collimators may damage the beam. As pointed out by K. Bane and P. Morton the wakefields can be reduced considerably by tapering the steps and using the...

Test Beam Studies at SLAC End Station A for the International Linear Collider. 2006-06-26 - 2006-06-30

M. Woods, C. Adolphsen, R. Arnold, G. Bowden, ...

Conference presentation

Coupler Short-Range Wakefield Kicks. 2007-12-11 - 2007-12-13

DESY Maschinenphysik, I. Zagorodnov

Conference presentation