Measurement of Electron-Beam Bunch Length and Emittance Using Shot-Noise-Driven Fluctuations in Incoherent Radiation

Catravas, P.; Leemans, Wim; Wurtele, J. S.; Zolotorev, M.; Babzien, M.; Ben‐Zvi, I.; Segalov, Z.; Wang, X.-J.; Yakimenko, V.

doi:10.1103/physrevlett.82.5261

Cited by 43 publications

(50 citation statements)

References 10 publications

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“…As predicted, the measured spectra of single FEL pulses contain approximately N peaks, although their positions and intensities vary [11,12]. Furthermore, it has been shown that the latter finding is a general property of pulsed radiation which is not depending on laser operation [14].…”

Section: Multiple Coherent Componentsmentioning

confidence: 84%

Multiple Coherent Components in Relativistic Heavy-Ion Collisions

Ikonen

Credé²,

Eugenio³

et al. 2010

AIP Conference Proceedings

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Abstract. A theory is presented for multiple coherent source components of partially coherent pion radiation produced by relativistic heavy-ion collisions. Results are given for the relative probabilities of emission of one, two, or three pions. Theoretical calculations on the relation between two-and three-pion correlators give some evidence, when compared with experimental data, for the existence of multiple coherent components in heavy-ion collisions.

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Section: Multiple Coherent Componentsmentioning

confidence: 84%

Multiple Coherent Components in Relativistic Heavy-Ion Collisions

Ikonen

Credé²,

Eugenio³

et al. 2010

AIP Conference Proceedings

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“…In the visible range, narrow band of the off -axis radiation from the undulator was used for electron beam energy spread, alignment and emittance characterization [33]. The single -shot fluctuation spectrum was used for the electron beam bunch length measurement [34]. Most single-pass high gain FEL undulators are made up by several segments, each segment length is on the order of 2 to 5 meters.…”

Section: Beam Diagnostics For the Undulatormentioning

confidence: 99%

Single-pass high-gain free electron laser electron beam diagnostics

Wang¹

2000

AIP Conference Proceedings

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Consensus reached in the last few years that fourth generation light source will most likely be a X -ray or a UV coherent source based on single-pass high-gain free electron laser (FEL), such as Self Amplified Spontaneous Emission (SASE), or seeded high-gain harmonic -generation (HGHG) free electron lasers. High -gain (> 10 7 ) required for single -pass FEL puts great constrain on the quality of electron beam, and demands detailed distribution information of electron beam in six -dimension. The typical accelerator system for single -pass FEL consists of a photocathode RF gun injection system, a linac and magnetic bunch compressors, and a long undulator. The major challenges in beam diagnostics for single -pass FEL are to characterize the pico-seconds high-brightness electron beam in six -dimension produced by photocathode RF gun injector, and impro ve the stability and reliability of the photocathode RF gun injection system. Characterization of short electron bunch (∼100 fs) produced by the compressors, and co-align the electron beam with FEL radiation inside long undulator are also critical for FEL performance. We will discuss many diagnostic techniques developed at the Brookhaven Accelerator Test Facility (ATF) for the photocathode RF gun injection system, present several techniques for femto-seconds bunch length measurement, especially RF kicker cavity. Tomography technique for both transverse and longitudinal phase space measurements is discussed. Concept of multiple alignment -laser stations is present for beam alignment in the long undulator.

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“…Average properties of the output were studied in [10][11][12][13][14][15][16] and fluctuations were considered in [17][18][19][20]. The spiking of the output radiation (see Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The theory of high-gain single-pass free-electron lasers has been developing since the late 1970's [6][7][8][9]. Because SASE starts from the shot noise in the electron beam, a proper theory requires a statistical treatment of the output radiation [10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Statistical correlations and intensity spiking in the SASE FEL

Krinsky

Gluckstern

2002

Nuclear Instruments and Methods in Physics Research Section A:

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In the linear regime before saturation, we describe the statistical correlations in the narrow band chaotic output of the SASE FEL. At a fixed position along the undulator axis, we derive joint probability distributions for the intensity in the output pulse to have values 1 I and 2 I at times 1 t and 2 t , and for the spectral intensity to have values ~1I and ~2I at frequencies 1 ω and 2 ω . Probability distributions for the peak values of intensity in the time and frequency domains are also determined.

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Measurement of Electron-Beam Bunch Length and Emittance Using Shot-Noise-Driven Fluctuations in Incoherent Radiation

Cited by 43 publications

References 10 publications

Multiple Coherent Components in Relativistic Heavy-Ion Collisions

Multiple Coherent Components in Relativistic Heavy-Ion Collisions

Single-pass high-gain free electron laser electron beam diagnostics

Statistical correlations and intensity spiking in the SASE FEL

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