LCLS Control GroupSheng Peng (pengs@slac.stanford.edu)

October 26, 2005 1

Injection Laser Stabilization Control System Preliminary Design

OutlineIntroductionMotion ControlImage acquisitionStatus

LCLS Control GroupSheng Peng (pengs@slac.stanford.edu)

October 26, 2005 2

Introduction

The injection laser stabilization control system includes 3 feedback loops. Each loop includes 2 mirrors. Each mirror has two actuators and one camera.The IOC should read back the image from camera, figure out laser’s position, calculate error and apply the correction to the actuators.Whole loop should be about 1 Hz. Camera should be synced to 120Hz.

LCLS Control GroupSheng Peng (pengs@slac.stanford.edu)

October 26, 2005 3

IntroductionActuator 1

camera

LaserActuator 2

LCLS Control GroupSheng Peng (pengs@slac.stanford.edu)

October 26, 2005 4

Introduction

Spiricon Laser Beam Analyzer

Spiricon Laser Beam Analyzer

LCLS Control GroupSheng Peng (pengs@slac.stanford.edu)

October 26, 2005 5

Motion: Newport XPSC8 Motion Controller

Pentium 4 PC based

vxWorks powered

Support up to eight motors

Ethernet control interface

LCLS Control GroupSheng Peng (pengs@slac.stanford.edu)

October 26, 2005 6

Motion: Newport CMA-12CCCL actuator

Travel range: 12.5 mm

Resolution: 0.2µm

Encoder: Yes

Bi-Direction repeatability: 3µm

Speed: 50~400 µm/S

Load Capacity: 90N

Compatible with XPSC8

LCLS Control GroupSheng Peng (pengs@slac.stanford.edu)

October 26, 2005 7

Image Acquisition: PULNiX TM-6710CL camera

CCD: 1/2”Shutter: Full FrameUV option: YesResolution: 648x484Progressive: YesExternal Trigger: YesFull scan: 120HzAnalog Output: YesCameralink: Yes

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

LCLS Control GroupSheng Peng (pengs@slac.stanford.edu)

October 26, 2005 8

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Image Acquisition: Cameralink interfaceWe have two candidates

PULNiX Cam2netPleora OEM (iPORT PT1000)

Cameralink compatible

Giga-Ethernet interface

16MB buffer

External trigger interface

EDT PMC DV C-LinkCameralink compatible32bit/66MHz PCICustomized solution is available

LCLS Control GroupSheng Peng (pengs@slac.stanford.edu)

October 26, 2005 9

StatusSpiricon Laser Beam Analyzer has arrived and has been setup

Newport XPSC8 motion controller, 4 motor drivers and 4 CMA-12CCL actuators have arrived

Integration test with vendor’s software was tried and some problems were observed but not repeatable in LLNL. Further investigation is going on.

EPICS driver and device support is available from APS. Code review has been done.

Most of code seems from Newport. The coding style is ok.“socket” is working as NODELAY with polling rather than blocked with “select”.No any connection management such as connection monitor and recovery.

1 PULNiX TM-6710CL has arrived.

1 PULNiX cam2net has arrived.Can’t get non-disclosure agreement for current protocol.GigEVison is coming.

Loaner EDT DV C-LINK PMC card arrived.Programming interface non-disclosure agreement were settled.Driver and device support development is going on.The first release is expected before the Christmas.