IPAC2017 - Classification: 07 Accelerator Technology / T25 Lasers

Paper	Title	Page
THPVA045	Telecommunication Concepts for Compact, Electro-Optical and Frequency Tunable Sensors for Accelerator Diagnostics	4534
	E. Bründermann, A.-S. Müller KIT, Karlsruhe, Germany I. Hosako, I. Morohashi, S. Nakajima, S. Saito, N. Sekine NICT, Tokyo, Japan
	Funding: Supported by Invitation Fellowship for Research ID No. S16704 of Japan Society for the Promotion of Science (JSPS) awarded to E.B. hosted by I.H. Terahertz diagnostics* for investigating the properties of electron and photon beams, especially the investigation of electron bunch instabilities, accompanied by terahertz photon bursts is increasingly employed to monitor and investigate electron bunch dynamics. Recent advances in information and communications technology promise compact sensors based on telecom and thus industry standards. We present potential applications of such technology concepts for accelerators, including a miniature probe for electro-optical sampling, which could be employed for electron bunch electrical near-field studies, and laser sources with widely tunable pulse repetition rates adaptable for pulsed diagnostics*. E. Bründermann, H.-W. Hübers, M.F. Kimmitt, Terahertz Techniques, Springer-Verlag (2012). J.L. Steinmann et al., Phys. Rev. Lett. 117, 174802, 2016. * M. Brosi et al., Phys. Rev. Accel. Beams 19, 110701, 2016. **** I. Morohashi et al., Nano Commun Netw 10, 79, 2016.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA045
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THPVA047	Developing an Yb/Nd Doped Hybrid Solid Laser of RF Gun for SuperKEKB Phase II Commissioning	4540
	X. Zhou, T. Natsui, Y. Ogawa, M. Yoshida, R. Zhang KEK, Ibaraki, Japan
	The electron beams with a charge of several nC and a normalized emittance of less than 10 'm are expected to be generated in the photocathode RF gun for injector linac of SuperKEKB accelerator project. By development of the Yb-doped laser system, more than 1.0 nC electron has been obtained in 25 Hz. The laser system is already for commissioning phase I. But, the 30 ps pulse width stretch limit the pulse energy of the amplifier laser system. As well-established laser material, Nd:YAG rods with high optical homogeneity and high damage threshold, simplify the design of high-pulse-energy amplifier. Therefore, a new Nd/Yb hybrid laser system is development to increase the pulse energy of the laser source. For phase II commissioning, more than 3 nC electron beam is expected. Also, a chirped pulse amplification (CPA) laser system is prepared for the phase III commissioning, both pulse energy and pulse shaping controller are expected.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA047
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THPVA072	Travelling Laser Focus System for the Particles Acceleration	4613
	A.A. Mikhailichenko Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
	We describe the result of the wake-fields calculation in a device for acceleration of particles in the micro-structures illuminated by the swept laser bust. Calculations carried with help of FlexPDE code.
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Paper

Title

Page

Telecommunication Concepts for Compact, Electro-Optical and Frequency Tunable Sensors for Accelerator Diagnostics

4534

E. Bründermann, A.-S. Müller
KIT, Karlsruhe, Germany
I. Hosako, I. Morohashi, S. Nakajima, S. Saito, N. Sekine
NICT, Tokyo, Japan

Funding: Supported by Invitation Fellowship for Research ID No. S16704 of Japan Society for the Promotion of Science (JSPS) awarded to E.B. hosted by I.H.
Terahertz diagnostics* for investigating the properties of electron and photon beams**, especially the investigation of electron bunch instabilities, accompanied by terahertz photon bursts is increasingly employed to monitor and investigate electron bunch dynamics***. Recent advances in information and communications technology promise compact sensors based on telecom and thus industry standards. We present potential applications of such technology concepts for accelerators, including a miniature probe for electro-optical sampling, which could be employed for electron bunch electrical near-field studies, and laser sources with widely tunable pulse repetition rates adaptable for pulsed diagnostics***.
* E. Bründermann, H.-W. Hübers, M.F. Kimmitt, Terahertz Techniques, Springer-Verlag (2012).
** J.L. Steinmann et al., Phys. Rev. Lett. 117, 174802, 2016.
*** M. Brosi et al., Phys. Rev. Accel. Beams 19, 110701, 2016.
**** I. Morohashi et al., Nano Commun Netw 10, 79, 2016.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA045

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPVA047

Developing an Yb/Nd Doped Hybrid Solid Laser of RF Gun for SuperKEKB Phase II Commissioning

4540

X. Zhou, T. Natsui, Y. Ogawa, M. Yoshida, R. Zhang
KEK, Ibaraki, Japan

The electron beams with a charge of several nC and a normalized emittance of less than 10 'm are expected to be generated in the photocathode RF gun for injector linac of SuperKEKB accelerator project. By development of the Yb-doped laser system, more than 1.0 nC electron has been obtained in 25 Hz. The laser system is already for commissioning phase I. But, the 30 ps pulse width stretch limit the pulse energy of the amplifier laser system. As well-established laser material, Nd:YAG rods with high optical homogeneity and high damage threshold, simplify the design of high-pulse-energy amplifier. Therefore, a new Nd/Yb hybrid laser system is development to increase the pulse energy of the laser source. For phase II commissioning, more than 3 nC electron beam is expected. Also, a chirped pulse amplification (CPA) laser system is prepared for the phase III commissioning, both pulse energy and pulse shaping controller are expected.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA047

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THPVA072

Travelling Laser Focus System for the Particles Acceleration

4613

A.A. Mikhailichenko
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA

We describe the result of the wake-fields calculation in a device for acceleration of particles in the micro-structures illuminated by the swept laser bust. Calculations carried with help of FlexPDE code.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA072

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