JAI Industry Event 1 AMULET - PowerPoint Presentation

Slide1

JAI Industry Event

1

AMULET

A

dvanced

M

etrology

U

sing

L

as

E

r

T

racers

(and various other bits)Slide2

OverviewBackground and AimsProject StatusAMULETC-FITCAOXProject PlansAMULETC-FITCAOXSlide3

Background & AimsLiCAS & MONALISA project ended prematurely with termination of UK-ILC activities 1.5 years agoAim to commercially exploit technology developed from these projects (some were born in ATLAS)While doing so reconnect the team to a new accelerator science projectSlide4

AMULET(background)Bring FSI technology into a commercial instrument (LaserTracer)NPL-JAI-EPSRC funded project with industrial partner (ETALON AG)3 years, start Jan. 2010, £600k, collaboration with NPL and ETALONTwo international patents pendingLiCAS know-how registered at ISIS

Laser TracerSlide5

AMULET(main tasks)Measure tens of meters to few micron accuracy and sub micron resolution.More practical reference interferometers (compact, cheap, coiled fibres instead of huge evacuated Invar tubes)More “traceable” length referenceMore dynamic measurement (kHz instead of Hz) Integrate into Tracer mechanics while keeping original functionality aliveSlide6

AMULET Status (Fibre Calibration: Dispersion and “optical CTE”)Fibres calibrated using acetylene gas cellsInitially calibrated OPD vs. temperature (PT-100)Now calibrate OPD vs phase advance between two absorption peaks instead  more traceable, cheaper

PT100 better resolution but worse accuracy

Gas Cell Calibration (avg. 100 shots)

PT100 Calibration (avg. 100 shots)

Phase Advance (Radians)

PT100 Resistance (Ohms)

Residual

Residual

700

Hz/rad

700

Hz/rad

700

Hz/radSlide7

AMULET Status (Scale Error Measurements)Slide8

Time / s

Distance measured / m

Time / s

Distance measured / m

AMULET Status

(Dynamic FSI)

Measured target on a Piezo oscillator

Success over a range of frequencies

Limited by linear speed of target

0.05 s

1.5

µm

0.05 s

0.6

µm

500 Hz oscillation

100 Hz oscillationSlide9

Time / s

Distance measured / m

Time / s

Distance

measured / m

Can calculate lengths for each data point

take

data at

2.77 MHz

(

exceed specs x 1000)

50 nm errors due to phase extraction errors or air turbulence

5

µ

s

1

nm

0.7 s

50 nm

Time

resolution

Stationary target stability

AMULET Status

(Dynamic FSI)Slide10

Started integration into Laser

Tracer head1560nm & 633nm light through same optical system.Bench top experiment worksIssues: ¼ wave plates and focussing optics

FFI data taken with 633 and 1560 nm laser light

Intensity

Data Point

26 1560nm fringes 64 633nm fringes

26*1560/633=64.08

AMULET Status

(Hybrid Tracer)

IntensitySlide11

C-FITCommercialising Frequency scanning Interferometry TechnologySlide12

C-FIT(background)SLAC metrology department invited AMULET team for 2 week demo of technology (fully sponsored by SLAC $80k)

X-FELprototype

Problem: LCLS-II will use

variable-gap undulators

Field

maps vs. gap size

(off-line, in calibration facility).

Gaps tuned to

1 micron absolute (on-line during use in accelerator)Can we do this ?Slide13

C-FIT (SLAC visit outcomes)Yes We Can !SLAC understood test undulator motion (butterfly folding its wings by few microns very slowly)SLAC want 24 ch. FSI system from us

$100k requested in SeptemberBudget decision in next few weeks Main points for improvement:speed of analysis softwaremore hardware integrationMatching Fell-Fund application to upgrade and build from surplus MONALISA DAQ12 months, £62k=$100k, start Jan 2012

2.5 hSlide14

C-FIT(the small print)If C-FIT system worksMight integrate FSI into all LCLS-II undulatorsO(500 channels)fully integrated into LCLS-II operations systems (new electronics, ultra high reliability)possibly fully commercial systemJAI joins LCLS-II collaborationLCLS-II = X-Ray FELJAI core strategy

= build ultra compact X-Ray FEL (driven by laser plasma accelerator)LCLS-II also interested in Smith Purcell bunch profilerfit, glove, etc.Slide15

Analysis of geometric networksInvented by Patrick Brockill for LiCAS

IP protection in progressCompany interested integrating into their productObtained PIA grant to evaluate PETRA-III network with CAOX Expect comparison to SA & next step Nov. 2011Applying for second PIA grant to speed code up

CAOXSlide16

Future Plans(summary, for work plans see backup slide)AMULET:will complete in Jan 2013 hopefully with tracer ready to gofully funded until thenSLAC offered several projects to A. Lancaster to bolster accelerator science aspects of thesissupport from mechanical and electronics engineering and workshops was included in the grantC-FIT:If Fell Fund comes through, complete in Jan 2013apply for Follow-On-Fund to build LCLS-II system by 2015 apply for

PRD fund to get more involved in undulator and FEL aspects at LCLS-IIsmall amounts of electronics engineering and workshop neededCAOX:after next PIA grant (this year) complete comparisons of codesapply for IPS funding with contribution from NRK for 1-3 year project on full code integration, starting mid 2012minor computing support neededSlide17

Thank you for your attentionQuestions?Slide18

Future Plan(AMULET details)Fibre Reference InterferometersRepeat calibration of fibres.Gas cell background subtraction to improve measurement.Develop portable fibre container.Tracer IntegrationVerify optics compatibility (1550nm and 633nm).Test portable photo diode boards.Design and build combined tracer head.Produce dichroic beam splittersProduce multiple wavelength antireflection coated opticsTest Hybrid tracerTest fibre calibration with hybrid tracer. Laser Development

Work with New Focus to bring down the cost of the FSI lasers and improve functionality