Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection

P.J. Phillips; W. A. Gillespie; B. Steffen; E.-A. Knabbe; B. Schmidt; P. Schmüser; S.P. Jamison; G. Berden; A.F.G. Van Der Meer; A.M. MacLeod

Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection

P.J. Phillips, W. A. Gillespie, B. Steffen, E.-A. Knabbe, B. Schmidt, P. Schmüser, S.P. Jamison, G. Berden, A.F.G. Van Der Meer, A.M. MacLeod

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

For the high gain operation of a SASE FEL, extremely short electron bunches are essential to generate sufficiently high peak currents. At the superconducting linac of FLASH at DESY, we have installed an electro-optic measurement system to probe the time structure of the electric field of single ~100 fs electron bunches. In this technique, the field induced birefringence in an electro-optic crystal is encoded on a chirped picosecond laser pulse. The longitudinal electric field profile of the electron bunch is then obtained from the encoded optical pulse by a single shot cross correlation with a 35 fs laser pulse using a second harmonic crystal (temporal decoding). An electro-optical signal exhibiting a feature with 118 fs FWHM was observed, and this is close to the limit of resolution due to the material properties of the particular electro-optic crystal used. The measured electro-optic signals are compared to bunch shapes simultaneously measured with a transverse deflecting cavity.

Original language	English
Title of host publication	8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators
Subtitle of host publication	DIPAC 2007
Pages	221-223
Number of pages	3
Publication status	Published - 2007
Event	8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, DIPAC 2007 - Venice, Italy Duration: 20 May 2007 → 23 May 2007

Conference

Conference	8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, DIPAC 2007
Country/Territory	Italy
City	Venice
Period	20/05/07 → 23/05/07

Cite this

Phillips, P. J., Gillespie, W. A., Steffen, B., Knabbe, E.-A., Schmidt, B., Schmüser, P., Jamison, S. P., Berden, G., Van Der Meer, A. F. G., & MacLeod, A. M. (2007). Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection. In 8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators : DIPAC 2007 (pp. 221-223)

@inproceedings{543ddd19bc3746d9bf64a32d22da1e26,

title = "Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection",

abstract = "For the high gain operation of a SASE FEL, extremely short electron bunches are essential to generate sufficiently high peak currents. At the superconducting linac of FLASH at DESY, we have installed an electro-optic measurement system to probe the time structure of the electric field of single ~100 fs electron bunches. In this technique, the field induced birefringence in an electro-optic crystal is encoded on a chirped picosecond laser pulse. The longitudinal electric field profile of the electron bunch is then obtained from the encoded optical pulse by a single shot cross correlation with a 35 fs laser pulse using a second harmonic crystal (temporal decoding). An electro-optical signal exhibiting a feature with 118 fs FWHM was observed, and this is close to the limit of resolution due to the material properties of the particular electro-optic crystal used. The measured electro-optic signals are compared to bunch shapes simultaneously measured with a transverse deflecting cavity.",

author = "P.J. Phillips and Gillespie, {W. A.} and B. Steffen and E.-A. Knabbe and B. Schmidt and P. Schm{\"u}ser and S.P. Jamison and G. Berden and {Van Der Meer}, A.F.G. and A.M. MacLeod",

year = "2007",

language = "English",

pages = "221--223",

booktitle = "8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators",

note = "8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, DIPAC 2007 ; Conference date: 20-05-2007 Through 23-05-2007",

}

Phillips, PJ, Gillespie, WA, Steffen, B, Knabbe, E-A, Schmidt, B, Schmüser, P, Jamison, SP, Berden, G, Van Der Meer, AFG & MacLeod, AM 2007, Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection. in 8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators : DIPAC 2007. pp. 221-223, 8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, DIPAC 2007, Venice, Italy, 20/05/07.

TY - GEN

T1 - Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection

AU - Phillips, P.J.

AU - Gillespie, W. A.

AU - Steffen, B.

AU - Knabbe, E.-A.

AU - Schmidt, B.

AU - Schmüser, P.

AU - Jamison, S.P.

AU - Berden, G.

AU - Van Der Meer, A.F.G.

AU - MacLeod, A.M.

PY - 2007

Y1 - 2007

N2 - For the high gain operation of a SASE FEL, extremely short electron bunches are essential to generate sufficiently high peak currents. At the superconducting linac of FLASH at DESY, we have installed an electro-optic measurement system to probe the time structure of the electric field of single ~100 fs electron bunches. In this technique, the field induced birefringence in an electro-optic crystal is encoded on a chirped picosecond laser pulse. The longitudinal electric field profile of the electron bunch is then obtained from the encoded optical pulse by a single shot cross correlation with a 35 fs laser pulse using a second harmonic crystal (temporal decoding). An electro-optical signal exhibiting a feature with 118 fs FWHM was observed, and this is close to the limit of resolution due to the material properties of the particular electro-optic crystal used. The measured electro-optic signals are compared to bunch shapes simultaneously measured with a transverse deflecting cavity.

AB - For the high gain operation of a SASE FEL, extremely short electron bunches are essential to generate sufficiently high peak currents. At the superconducting linac of FLASH at DESY, we have installed an electro-optic measurement system to probe the time structure of the electric field of single ~100 fs electron bunches. In this technique, the field induced birefringence in an electro-optic crystal is encoded on a chirped picosecond laser pulse. The longitudinal electric field profile of the electron bunch is then obtained from the encoded optical pulse by a single shot cross correlation with a 35 fs laser pulse using a second harmonic crystal (temporal decoding). An electro-optical signal exhibiting a feature with 118 fs FWHM was observed, and this is close to the limit of resolution due to the material properties of the particular electro-optic crystal used. The measured electro-optic signals are compared to bunch shapes simultaneously measured with a transverse deflecting cavity.

UR - http://www.scopus.com/inward/record.url?scp=84879914071&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84879914071

SP - 221

EP - 223

BT - 8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators

T2 - 8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, DIPAC 2007

Y2 - 20 May 2007 through 23 May 2007

ER -

Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection

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