COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

COMPRES Gas Loading COMPRES Gas Loading System at APSSystem at APS

Progress ReportProgress Report

June 2007June 2007

Mark RiversMark Rivers

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

OutlineOutlineDesignDesignStatusStatusCostsCostsFuture plansFuture plans

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

Key system design goalsKey system design goalsBased on COMPRES workshop at APS on April Based on COMPRES workshop at APS on April 28, 2006 attended by 16 people 28, 2006 attended by 16 people Able to load many kinds of cellsAble to load many kinds of cellsClosure mechanism (motor driven screws) Closure mechanism (motor driven screws) closes a clamping device, not the cell itself. closes a clamping device, not the cell itself.

Easy to add new cell designs, just a different clamp or Easy to add new cell designs, just a different clamp or different spacersdifferent spacers

Optical access.Optical access.Vacuum pump to clean system before loadingVacuum pump to clean system before loadingNo electrical parts except pressure transducers No electrical parts except pressure transducers in high-pressure enclosurein high-pressure enclosure

Allows flammable gas operation in futureAllows flammable gas operation in futureEasy to safely operateEasy to safely operate

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

Key safety featuresKey safety featuresStarted with approved LLNL designStarted with approved LLNL designMany new features to improve ease of use and interlocks for safe Many new features to improve ease of use and interlocks for safe operationoperationInterlocked heavy-duty enclosure (3/8”” aluminum, ¾” plywood). Interlocked heavy-duty enclosure (3/8”” aluminum, ¾” plywood). All high-pressure components contained inside enclosureAll high-pressure components contained inside enclosureAll high-pressure components are supplied from vendors, All high-pressure components are supplied from vendors, pressure tested. No locally machined high-pressure components.pressure tested. No locally machined high-pressure components.Gas loaded from lecture bottle to limit total mass (energy) that can Gas loaded from lecture bottle to limit total mass (energy) that can be compressed in pressure vessel.be compressed in pressure vessel.

Protects against user forgetting to load cell or filler parts.Protects against user forgetting to load cell or filler parts.Pressure meters on both low and high pressure systems which will Pressure meters on both low and high pressure systems which will vent before rupture disk failsvent before rupture disk failsGas-operated valves and motor operated drives for remote Gas-operated valves and motor operated drives for remote operationoperationPLC for interlock control and computer for routine operations PLC for interlock control and computer for routine operations controlcontrol

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

InterlocksInterlocks

Prevent over-pressuring low-pressure side with Prevent over-pressuring low-pressure side with lecture bottlelecture bottle

Gauge 1 > 1700psi: Vent low pressure sideGauge 1 > 1700psi: Vent low pressure side•Close V1, V4Close V1, V4•Open V2, V3Open V2, V3•Turn off compressorTurn off compressor

Prevent over-pressuring high-pressure side Prevent over-pressuring high-pressure side with pressure vesselwith pressure vessel

Gauge 2 > 30000psi: Vent high pressure sideGauge 2 > 30000psi: Vent high pressure side•Open V6Open V6•Turn off compressorTurn off compressor

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

InterlocksInterlocksPrevent pressurizing more gas than Prevent pressurizing more gas than lecture bottle contentslecture bottle contents

V1 open: Isolate compressor outputV1 open: Isolate compressor output•Close V5Close V5

Prevent adding a second lecture bottle Prevent adding a second lecture bottle contents to already pressurized vesselcontents to already pressurized vessel

Gauge 2 > 1700 PSI: Gauge 2 > 1700 PSI: •Close V1Close V1

System at desired maximum pressureSystem at desired maximum pressureTurn off compressor (holds pressure)Turn off compressor (holds pressure)

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

Routine OperationRoutine OperationComputer control will be used for routine Computer control will be used for routine operations such as:operations such as:

Pressurizing lecture bottle up to 1700psiPressurizing lecture bottle up to 1700psiPressurizing pressure vessel up to 30000psiPressurizing pressure vessel up to 30000psiVenting high and low pressure systemsVenting high and low pressure systemsPumping high and low pressure systems Pumping high and low pressure systems with vacuum pumpwith vacuum pump

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

SchematicSchematic

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

System CabinetSystem Cabinet

CompressorVacuum pump

Valves

Pressure vessel

Bottom plug, DAC, closure

assembly

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

Cell Cell ClosureClosure

Vessel bottom plug

Stepper motor

Gear box

Cell clamp

(DAC inside)

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

Cell ClosureCell Closure

Bottom plate with springs

Cell holder

Diamond anvil cell

Top plate

Guide posts

Holes for motor-driven closing screws

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

Control Panel (temporary)Control Panel (temporary)

Low Pressure Gauge High Pressure Gauge

Programmable Logic

Controller (PLC)

Air valvesHigh P valve

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

Control Control System System ScreenScreen

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

Status (June 15, 2007)Status (June 15, 2007)

All major components purchasedAll major components purchasedControl system finishedControl system finishedAll components except pressure vessel tested All components except pressure vessel tested to 2kbar.to 2kbar.Final assembly in progress.Final assembly in progress.Need final APS safety approval.Need final APS safety approval.Plan to load a cell within 2-3 weeksPlan to load a cell within 2-3 weeksWill be located on experimental floor near 13-Will be located on experimental floor near 13-ID-DID-D

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

To be doneTo be done

New top plug with sapphire window (order New top plug with sapphire window (order placed)placed)Optical viewing systemOptical viewing systemJack to lift bottom plug and motorsJack to lift bottom plug and motorsTest and refine cell closure mechanismTest and refine cell closure mechanism

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

CostsCostsCompressorCompressor $11K$11K

Pressure vesselPressure vessel $14K$14K

Valves, fittingsValves, fittings $8K$8K

Vacuum pumpVacuum pump $8K$8K

CabinetCabinet $10K$10K

Pressure transducers and gauges, Pressure transducers and gauges, $3K$3K

PLCPLC $2K$2K

Video systemVideo system $3K$3K

Motor controlMotor control $2K$2K

Computer controlComputer control $2K$2K

Cell closureCell closure $1K$1K

MiscellaneousMiscellaneous $6K$6K

TOTAL (excluding labor)TOTAL (excluding labor) $70K$70K

COMPRES 2007 Annual MeetingCOMPRES 2007 Annual Meeting

FutureFutureDuplicate system for use at other labsDuplicate system for use at other labs

UNLV, ALS, NSLSUNLV, ALS, NSLSWho will do assembly?Who will do assembly?Who assumes liability?Who assumes liability?

COMPRES may use remaining funds COMPRES may use remaining funds from $118K allocated for this system to from $118K allocated for this system to share costs of ALS and/or NSLS systemsshare costs of ALS and/or NSLS systemsOpen to users soon!Open to users soon!