STATUS OF THE SCSS CONTROL STATUS OF THE SCSS CONTROL SYSTEMSYSTEM

– FIRST PHASE OF AN 8GEV XFEL – FIRST PHASE OF AN 8GEV XFEL PROJECT IN SPRING-8PROJECT IN SPRING-8

T.FukuiT.Fukui11, R.Tanaka, R.Tanaka11, T.Ohata, T.Ohata11, M.Takeuchi, M.Takeuchi11, , Y.OtakeY.Otake22, M.Kitamura, M.Kitamura22, T. Ishikawa, T. Ishikawa22, H. Kitamura, H. Kitamura22, T. Shintake, T. Shintake22 and and

SCSS project team2SCSS project team2

11 JASRI/SPring-8, Hyogo 679-5198, Japan. JASRI/SPring-8, Hyogo 679-5198, Japan. 22 Harima Institute, RIKEN, Hyogo 679-5148, JapanHarima Institute, RIKEN, Hyogo 679-5148, Japan

ICALEPCS 2005, Geneva, 10-Oct-2005

ContentsContents

IntroductionIntroduction

What is SCSSWhat is SCSS

The SCSS prototype acceleratorThe SCSS prototype accelerator

Control systemControl system– SoftwareSoftware– Computing systemComputing system– Developed hardwareDeveloped hardware

SummarySummary

X-ray Free Electron LaserX-ray Free Electron Laser

XFEL will give us very short-pulsed, spatially XFEL will give us very short-pulsed, spatially coherent and super-intense xrays.coherent and super-intense xrays.– Length 0.25ps, Emittance 0.5Length 0.25ps, Emittance 0.5mm.mrad, mm.mrad,

Peak Brilliance 10Peak Brilliance 103030 - 10 - 103333

These properties will open up a huge numberThese properties will open up a huge number of new possibilities in scientific fields of new possibilities in scientific fields

Atomic and Molecular PhysicsAtomic and Molecular PhysicsCondensed Matter PhysicsCondensed Matter PhysicsLife and Medical SciencesLife and Medical SciencesMaterials SciencesMaterials SciencesChemistryChemistryOptical and Laser SciencesOptical and Laser Sciences

SASE: Self Amplification of SASE: Self Amplification of Spontaneous EmissionSpontaneous Emission

The single pass FEL based SASE is only one The single pass FEL based SASE is only one realistic candidate to generate intense coherent realistic candidate to generate intense coherent radiation at X-ray wavelength.radiation at X-ray wavelength.– No Mirror is available below 100 nm.No Mirror is available below 100 nm.

we need a very stable and reliable machine, we need a very stable and reliable machine, and stable clean electron beam.and stable clean electron beam.

What is SCSSWhat is SCSS

SCSS:SPring-8 Compact SASE SourceSCSS:SPring-8 Compact SASE Source– Low Emittance InjectorLow Emittance Injector

Short Saturation LengthShort Saturation Length

– High Gradient AcceleratorHigh Gradient AcceleratorShort Accelerator LengthShort Accelerator Length

– Short Period UndulatorShort Period UndulatorLower Beam EnergyLower Beam Energy

These make a machine compact, and fiThese make a machine compact, and fit the SPring-8 1km-long beamline spact the SPring-8 1km-long beamline spacee

Bird eye view of SCSSBird eye view of SCSS

8GeV Electron Accelerator

SCSS PrototypeAccelerator

8GeV Electron Accelerator

SCSS PrototypeAccelerator

500m

SCSS 0.35km

PAL-XFEL 0.35km

LCLS 1.23km

TESLA-XFEL 2.1km

Beam Energy

Wave Length

Undulator Period/Gap

SCSS 8GeV 0.1nm 15mm /3.5mm

LCLS 13.6Gev 0.1nm 30mm /6.5mm

TESLA-XFEL

20GeV 0.1nm 48mm /10mm

PAL-XFEL

3.7GeV 0.3~0.7nm

15mm /3mm

What is SCSS What is SCSS – cont’– cont’

Total budget of the SCSS will be 40 Total budget of the SCSS will be 40 billion yen (350M US$)billion yen (350M US$)

Budget for next year is approved by the Budget for next year is approved by the Ministry of Ministry of Education,Culture,Sports,Science and Education,Culture,Sports,Science and Technology.Technology.

We are waiting for final approval by the We are waiting for final approval by the Japanese government.Japanese government.

0.1

1

10

100

1000

2002 03 04 05 06 07 08 09 10 11 12

Year

Wav

elen

gth

(nm

)

0.1nm target

60nm

6nm

Approved

Proposed

LCLS

TESLATTF2

SCSS Proto.Accelerator

SCSS

TESLAXFEL

X-

ray

VU

VX

The SCSS prototype The SCSS prototype acceleratoraccelerator

The SCSS prototype accelerator consists The SCSS prototype accelerator consists of essential components for the 8GeV of essential components for the 8GeV SCSSSCSS– check to ensurecheck to ensure

technologytechnology

and feasibilityand feasibility– commissioning willcommissioning will

start next monthstart next month

The SCSS prototype The SCSS prototype accelerator accelerator – cont’– cont’

Beam energy is 250 MeV and target wavelength is 60 nm.

Total length of the accelerator is 60m

It will be used for VUV-FEL experimentIt will be used for VUV-FEL experimental users al users – It is possible to use for THz experimentsIt is possible to use for THz experiments

Low emittance electron gun with a CeBLow emittance electron gun with a CeB66 crystal t crystal t

hermionic cathodehermionic cathode– Normalized emittance is 1.1π mm.mradNormalized emittance is 1.1π mm.mrad

The SCSS prototype acceleratorThe SCSS prototype accelerator

500kVPulse Gun

Deflector

Prebuncher

238MHz 476MHz

S-Band

APS Linac

BunchCompressor

50MeV Beam Dump

C-Band Linacs

Chicane

Undulator

250MeVBeam Dump

500kVPulse Gun

Deflector

Prebuncher

238MHz 476MHz

S-Band

APS Linac

BunchCompressor

50MeV Beam Dump

C-Band Linacs

Chicane

Undulator

250MeVBeam Dump

Low emittance electron gun with a CeBLow emittance electron gun with a CeB66 crystal t crystal t

hermionic cathodehermionic cathode– Normalized emittance is 1.1π mm.mradNormalized emittance is 1.1π mm.mrad

Beam Deflector Beam Deflector – Bunch length is ~ 1nsecBunch length is ~ 1nsec

The SCSS prototype acceleratorThe SCSS prototype accelerator

500kVPulse Gun

Deflector

Prebuncher

238MHz 476MHz

S-Band

APS Linac

BunchCompressor

50MeV Beam Dump

C-Band Linacs

Chicane

Undulator

250MeVBeam Dump

238MHz buncher & 476MHz booster238MHz buncher & 476MHz booster– Beam energy is 1.1MeV Beam energy is 1.1MeV

Velocity bunchingVelocity bunching

The SCSS prototype acceleratorThe SCSS prototype accelerator

500kVPulse Gun

Deflector

Prebuncher

238MHz 476MHz

S-Band

APS Linac

BunchCompressor

50MeV Beam Dump

C-Band Linacs

Chicane

Undulator

250MeVBeam Dump

238MHz buncher & 476MHz booster238MHz buncher & 476MHz booster– Beam energy is 1.1MeVBeam energy is 1.1MeV

S-band APS cavity and linacS-band APS cavity and linac– Beam energy is 50MeVBeam energy is 50MeV

To avoid space charge effectTo avoid space charge effect

The SCSS prototype acceleratorThe SCSS prototype accelerator

500kVPulse Gun

Deflector

Prebuncher

238MHz 476MHz

S-Band

APS Linac

BunchCompressor

50MeV Beam Dump

C-Band Linacs

Chicane

Undulator

250MeVBeam Dump

238MHz buncher & 476MHz booster238MHz buncher & 476MHz booster– Beam energy is 1.1MeVBeam energy is 1.1MeV

S-band APS cavity and linacS-band APS cavity and linac– Beam energy is 50MeVBeam energy is 50MeV

Bunch compressor Bunch compressor – Bunch length is ~ 12psecBunch length is ~ 12psec

The SCSS prototype acceleratorThe SCSS prototype accelerator

500kVPulse Gun

Deflector

Prebuncher

238MHz 476MHz

S-Band

APS Linac

BunchCompressor

50MeV Beam Dump

C-Band Linacs

Chicane

Undulator

250MeVBeam Dump

C-band linacs ( 5712MHz, 40MeV/m )C-band linacs ( 5712MHz, 40MeV/m )– 5712MHz 50MW klystron with rf pulse compressor5712MHz 50MW klystron with rf pulse compressor– Accelerating structure is 1.8m length * 4Accelerating structure is 1.8m length * 4– Beam energy is 250MeVBeam energy is 250MeV– Bunch length ~ 0.4psec after chicaneBunch length ~ 0.4psec after chicane

The SCSS prototype acceleratorThe SCSS prototype accelerator

500kVPulse Gun

Deflector

Prebuncher

238MHz 476MHz

S-Band

APS Linac

BunchCompressor

50MeV Beam Dump

C-Band Linacs

Chicane

Undulator

250MeVBeam Dump

In-vacuum undulatorsIn-vacuum undulators– Minimum gap is 3.5mm with 15mMinimum gap is 3.5mm with 15m

m periodm period– 4.5m long * 24.5m long * 2

The SCSS prototype acceleratorThe SCSS prototype accelerator

Present statusPresent status

Machine construction is almost finishedMachine construction is almost finished

RF aging will be started in this weekRF aging will be started in this week

Each component of control system is Each component of control system is ready, and over all test will be started next ready, and over all test will be started next weekweek

A commissioning will start next month.A commissioning will start next month.

Status at 8-Sep-2005Status at 8-Sep-2005

Status at 22-Sep-2005Status at 22-Sep-2005

Present status 7-Oct-2005Present status 7-Oct-2005

GigaEther Switch

Office LANProgramDevelopment

DMZ LAN

Operator Consol

Gun

Web

Magnet & Interlock

DB & File server

FirewallFirewall

1000BASE-SX

Buncher S-Band Bunch Compressor C-Band 1 C-Band 2 ID

H-PCF

Magnet Power Supply

PLC

VME

Control systemControl system

SoftwareSoftware

We use Message And Database Oriented We use Message And Database Oriented Control Architecture (MADOCA)Control Architecture (MADOCA)– Designed by SPring-8 control group in 1994Designed by SPring-8 control group in 1994– MADOCA is scalable, covering wide range of acceleMADOCA is scalable, covering wide range of accele

rators and beamlines.rators and beamlines.– Develop the prototype accelerator control software tDevelop the prototype accelerator control software t

o adapt the full-scale SCSSo adapt the full-scale SCSS– Using X-Mate, a GUI builder enables rapid prototypiUsing X-Mate, a GUI builder enables rapid prototypi

ng and easy development of GUIsng and easy development of GUIs

Message server

Collector

Equipmentmanager

devices

Collector &Poller

VMEs

System V IPC

ONC/RPC

Console

Sybase

SQL data access

Loggingdatabase

Parameterdatabase

Alarmdatabase

Databaseserver

Alarm

Accessserver

Accessserver

Accessserver

RF, Mag …

devices

User FunctionUser Function

GUIGUI GUI

No need to develop

Operation consoles are IA-32 workstations Operation consoles are IA-32 workstations running RedHat Enterprise Linux 3.running RedHat Enterprise Linux 3.

Database and file servers are shared with tDatabase and file servers are shared with the SPring-8 control system.he SPring-8 control system.– We use Sybase ASE12.0 for the RDBMSWe use Sybase ASE12.0 for the RDBMS– MC/ServiceGuard is used for High Availability MC/ServiceGuard is used for High Availability

Cluster.Cluster.

Computing systemComputing system

Computing system Computing system –Cont’–Cont’

VME controllers use IA-32 processor boarVME controllers use IA-32 processor boards (Pentium III 700MHz & Pentium M 1.1Gds (Pentium III 700MHz & Pentium M 1.1GHz) running Solaris 9 x86 with CF cards.Hz) running Solaris 9 x86 with CF cards.Use Programmable Logic Controllers (PLUse Programmable Logic Controllers (PLC) and the Remote I/O (OPT-VME) C) and the Remote I/O (OPT-VME) – Reduce the number of I/O signal wiringReduce the number of I/O signal wiring

Gigabit Ethernet is used for a backboGigabit Ethernet is used for a backbone of networkne of network– VLAN & PoE technologyVLAN & PoE technology

Developed hardware componentsDeveloped hardware components

We developed a high-speWe developed a high-speed A/D and D/A VME boaed A/D and D/A VME boards.rds.– Both are 238MHz clock and 12Both are 238MHz clock and 12

bit resolutionbit resolution– Fully digital controlled RF low-leFully digital controlled RF low-le

vel with IQ modulator and demvel with IQ modulator and demodulator is needed to provide a odulator is needed to provide a stable beam for FEL.stable beam for FEL.

– A/D boards are used for rf-BPMA/D boards are used for rf-BPMs and CTs.s and CTs.

DA

FPGA

DA

I

Q

Modulat

or

AD

FPGA

AD

I

Q

Dem

odulator

ee--

PO2.050-4 - Thursday October 13

PhaseFlip

I

Q

Developed hardware componentsDeveloped hardware components

We developed a master trigger and a We developed a master trigger and a trigger delay VME board.trigger delay VME board.

– Fast GaAs logic devices to Fast GaAs logic devices to synchronize the 5712 MHzsynchronize the 5712 MHz

– FPGA (238MHz clock) witFPGA (238MHz clock) with 24 bits countersh 24 bits counters

– The time jitter is 0.7ps.The time jitter is 0.7ps.~ Comparable to bunch length ~ Comparable to bunch length

= 0.4psec= 0.4psec

CKD Q

CKD Q

24bitscounter

238MHz

5712MHz

Trigger

FPGA

We developed a VME board with FL-net We developed a VME board with FL-net interface for communication between PLC interface for communication between PLC and VME.and VME.

– FL-net is Ethernet based FL-net is Ethernet based factory floor networkfactory floor network..

Established as JEM Established as JEM standards in Nov 2000 standards in Nov 2000 and as JIS standards in and as JIS standards in Feb 2004Feb 2004

JEM:Japan Electrical Manufacturers JIS:Japan Industrial Standards

Developed hardware componentsDeveloped hardware components

FL-net

FL-netFL-net

– The newly developed 'FA link protocol' on UDP/IP The newly developed 'FA link protocol' on UDP/IP with 10Mbpswith 10Mbps

– Master-less Token bus protocolMaster-less Token bus protocol– 8k words and 8k bits data are transferred by a cyclic 8k words and 8k bits data are transferred by a cyclic

transmission.transmission.

– It is possible to It is possible to use a Message for use a Message for peer to peer peer to peer communication.communication.

– Data transfer rate Data transfer rate is 1.4msec/node.is 1.4msec/node.

Cyclic Data Transfer Time

0

10

20

30

40

1 5 9 13 17 21

Number of Node

Tim

e( m

sec) time(msec)

GigaEther Switch

Office LANProgramDevelopment

DMZ LAN

Operator Consol

Gun

Web

Magnet & Interlock

DB & File server

FirewallFirewall

1000BASE-SX

Buncher S-Band Bunch Compressor C-Band 1 C-Band 2 ID

H-PCF

Magnet Power Supply

PLC

VME

Virtual LANFor FL-net

Gigabit

We developed a Linux box with PoE capability foWe developed a Linux box with PoE capability for a temperature measurement.r a temperature measurement.

Hardware ComponentsHardware Components - Cont’ - Cont’

– Small foot print (130mm * Small foot print (130mm * 100* 30mm).100* 30mm).

– We ported the MADOCA We ported the MADOCA on SH-Linux (kernel on SH-Linux (kernel 2.4.14).2.4.14).

– Resolution is Resolution is 0.001degree C with 3 0.001degree C with 3 wire RTD.wire RTD.

Accuracy is ~ 0.002degree C.Accuracy is ~ 0.002degree C.

WE1.3-4O - Wednesday October 12

ScheduleSchedule

0

2005/01 02 03 04 05 06 07 08 09 10 11 12

Month

H/W Development

SVOC Define

GUI Development

EM Development

Local test

H/W Installation

Comissioning

SummarySummary

We built the control system, using the We built the control system, using the MADOCA, for the SCSS prototype MADOCA, for the SCSS prototype accelerator.accelerator.– It will be used for 8GeV SCSS.It will be used for 8GeV SCSS.

We developed the FL-net module, Trigger We developed the FL-net module, Trigger module, A/D and D/A module for the module, A/D and D/A module for the SCSS.SCSS.The control system is ready.The control system is ready.– No need to modify the MADOCA frameNo need to modify the MADOCA frame– Only one and half year to build!Only one and half year to build!