AFAD 2014 Synchrotron Status of Compact X-ray Source at LUCX Kazuyuki Sakaue Waseda University Laser Undulator Compact X-ray source.

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AFAD 2014 Synchrotron Status of Compact X-ray Source at LUCX Kazuyuki Sakaue Waseda University Laser Undulator Compact X-ray source

AFAD 2014 Synchrotron LCS and LUCX Laser-Compton Scattering

AFAD 2014 Synchrotron LUCX Facility Outlook Accelerating Structure Optical Storage Cavity X-ray Detector

AFAD 2014 Synchrotron LUCX accelerator

AFAD 2014 Synchrotron EnergyRepetitionBunch SpaceChargeN. bunch 23-28MeV357MHz2.8ns1.37nC300 Size(H)Size(V)Bunch lengthEmi (H)Emi (V) 85um95um15ps10πmmmrad7πmmmrad Electron Beam Parameters at Collision Point Electron Beam Parameters 85μm×95μm

AFAD 2014 Synchrotron LUCX 4-mirror optical super-cavity

AFAD 2014 Synchrotron LUCX 4-mirror optical super-cavity

AFAD 2014 Synchrotron LUCX 4-mirror optical super-cavity

AFAD 2014 Synchrotron WavelengthRepetitionPulse SpacePowerPulse energy 1064nm357MHz 214kW600uJ Size(H)Size(V)Pulse durationFinesseCol. angle 89um85um7ps3357.5° Laser Parameters at Collision Point Laser Cavity Parameters

AFAD 2014 Synchrotron Stability of stored pulse intensity >15% rms >about 0.2nm accuracy of cavity length adjustment achieved Laser Power Stabilize 0.2nm accuracy

AFAD 2014 Synchrotron Summary of Laser-Electron Beam Parameters at the photon-electron collision point LASER ELECTRON WavelengthRepetitionPowerPulse energy 1064nm357MHz214kW600uJ Size(H)Size(V)Pulse durationCol. angle 89um85um7ps7.5° EnergyRepetitionChargeN. bunch 23-28MeV357MHz1.37nC300 Size(H)Size(V)Bunch lengthEmi (H)Emi (V) 85um95um15ps10πmmmrad7πmmmrad 9keV LCS X-ray Energy Laser-Electron Parameters

AFAD 2014 Synchrotron Timing System at LUCX Extremely high accuracy of control for optical cavity >~0.2nm Laser master system >stabilize the control of cavity >w/o affection for accelerator >jitter between electron and laser Less than 0.4ps Laser Master Timing System Conventional Accelerator Timing System Laser Master Clock System

AFAD 2014 Synchrotron As X-ray detector, MCP (Micro-Channel Plate) was used for detecting LCS X-ray and achieving the X-ray image X-ray detector -MCP-

AFAD 2014 Synchrotron Diagram of Imaging Setup ○MCP is the largest S/N detector for LCS ○I.I. for gating the LCS from BG ○Large gain with MCP (~10^7) and I.I. (~10^4) ＞ Spatial resolution will be bad but suitable for first detection X-ray detector -MCP-

AFAD 2014 Synchrotron Timing Scan Timing search

AFAD 2014 Synchrotron Position Scan Horizontal Vertical Position search

AFAD 2014 Synchrotron Intensity Intensity dependence

AFAD 2014 Synchrotron High Energy Resolution Detector CdTe semiconductor Collision point X-ray CdTe Detector CdTe detector inside the Pb block X-ray Energy Measurement by CdTe

AFAD 2014 Synchrotron X-ray Energy Measurement by CdTe Energy spectrum by CdTe detector

AFAD 2014 Synchrotron X-ray Energy Measurement by CdTe Changing electron beam energy shifts the LCS X-ray energy

AFAD 2014 Synchrotron X-ray Energy Measurement by CdTe Changing electron beam energy shifts the LCS X-ray energy

AFAD 2014 Synchrotron Y. Arai et al., Nucl. Instrum. Meth., A636(2011)S31-S36 LCS X-ray Detection by SOI Sensor SOI pixel sensor is the semiconductor detector using SOI (Silicon-On- Insulator) technique >detection and read out are on same board. >high S/N and high spatial resolution

AFAD 2014 Synchrotron Photon Spectrum by SOI Pixel Sensor 8~9keV X-ray was observed LCS X-ray Detection by SOI Sensor

AFAD 2014 Synchrotron Energy Bandwidth (within collimator) X-ray / pulse (SOI) 8~9keV8% b.w.36.4 ph/pulse X-ray/train (SOI)X-ray/train (Total)X-ray/sec (Total) 5460 ph/train1.4×10 6 ph/train 1.8×10 7 ph/sec (12.5Hz) CAIN Simulation results 1Train (SOI)1Train (Total) ×10 7 LCS X-ray specification at LUCX

AFAD 2014 Synchrotron X-ray Test Image MCP + I.I. 30keV X-ray (IC) 15keV X-ray (Fish backbone) LCS X-ray Imaging

AFAD 2014 Synchrotron X-ray Test Image by SOI pixel sensor Chili Head part of small fish LCS X-ray Imaging

AFAD 2014 Synchrotron Conclusions We have been developing LCS X-ray source at KEK-LUCX 28MeV electron linac based on SW accelerator 4-mirror planar Super-cavity with 600uJ storage LCS X-ray experiment at 9keV X-ray >Number of photon 1.8×10 7 Photon/sec/total band >SOI sensor was firstly used and show good result Further X-ray flux is required for application (Imaging/Crystal structure analysis/etc.) >increase number of bunch for accelerator >increase stored power in optical cavity power is limited by damage on mirror surface >enlarge the spot size