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LiberaElectron Beam Position

ProcessorRok Uršič

Instrumentation TechnologiesSlovenia

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Libera

All-In-OneCustomizableFeedback-Ready

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Libera Family• Common to all members

– Digital Board– Core Software

• Specific for each Member– Analog Board– Member specific Virtex II Pro embedded software

• Member and user specific Virtex II Pro embedded software

– Member specific SBC software• Member and user specific SBC software

• Electron beam position processor is the first member (see references for details)

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Programming ModulesADCs

FPGA

PPCPPC

Communication Ports

SBC RAM

Rocket IO

Virtex II Pro

3 x Ethernet 8 x Fast Serial Links(Fibre Channel)

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SBC Software Architecture

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6 / 13Functional Block Diagram Electron beam position proc.

FAST FEEDBACK

PROCESSING

PUBLIC NETWORKINTERFACE

PRIVATE NETWORK INTERFACE

FAST ACQUISITION

DIGITAL SIGNAL PROCESSING

MAGNET POWER SUPPLY

INTERFACE

ANALOG SIGNAL PROCESSING

ANDSAMPLING

SIG. CONDIT. AND TURN-BY-TURNDIGITAL SIGNAL

PROCESSING

HISTORY BUFFER

POST MORTEM

SYSTEM CLOCK

PUBLICNETWORK (LAN/ETHERNET)

PRIVATENETWORK (SFP/ROCKET IO)

HORIZONTAL AND VERTICAL MAGNET POWER SUPPLIES (RS485)SLOW

ACQUISITIONDIGITAL SIGNAL

PROCESSING

INTERLOCK

MACHINE CLOCK

POST MORTEM

2

8

MACHINE PROTECTION SYSTEM

VA

VB

VC

VD

HOUSEKEEPING

FROM BPM

PICK-UP

DATA ON DEMAND

AND POST FILTERING

TRIGGER

TIMING

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Feedback Building• Rich connectivity

– Public network (3 x Ethernet)– Private Network (8 x reconfigurable Rocket IO

via front panel SFP connectors)

• A variety of architectures possible– Soleil– Diamond– ... your choice

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Performance Results• The results that follow are preliminary

with no signal conditioning• Final performance results will be:

– Based on statistics of 100+ modules, – with signal conditioning.

• CE certified– LVD– EMC

• Emission• Immunity, test level: special 50 V/m up to 1 GHz

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Resolution - CW

0.1

1

10

100

1000

-80 -70 -60 -50 -40 -30 -20 -10 0

Pin / dBm

Reso

lutio

n /

µm rm

s

σY @ 1kHz BWσY @ 250 kHz BW

fRF = 499.654 MHz CWfsampling = 117.44 MHzSerial number: DL3kx = 10 mm

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10 / 13Beam current dependence - absolute

1250.0

1260.0

1270.0

1280.0

1290.0

1300.0

1310.0

1320.0

1330.0

1340.0

1350.0

-32.0 -27.0 -22.0 -17.0 -12.0 -7.0 -2.0

Pin / dBm

Y po

sitio

n ab

solu

te /

µm

SN-1

SN-2

SN-3

SN-4

SN-5

SN-6

SN-7

SN-8

SN-9

SN-10

SN-11

SN-12

SN-13

SN-14

SN-15

SN-16

SN-17

SN-18

SN-19

SN-20

SN-21

SN-22

SN-23

SN-24

SN-25

fRF = 352.202 MHz CWfsampling = 108.369 MHzky = 11.4 mm

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11 / 13Beam current dependence - relative

-20.0

-15.0

-10.0

-5.0

0.0

5.0

10.0

15.0

20.0

-32.0 -27.0 -22.0 -17.0 -12.0 -7.0 -2.0

Pin / dBm

Y po

sitio

n re

lativ

e /

µm

SN-1

SN-2

SN-3

SN-4

SN-5

SN-6

SN-7

SN-8

SN-9

SN-10

SN-11

SN-12

SN-13

SN-14

SN-15

SN-16

SN-17

SN-18

SN-19

SN-20

SN-21

SN-22

SN-23

SN-24

SN-25

fRF = 352.202 MHz CWfsampling = 108.369 MHzky = 11.4 mm

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Temperature stability

-140

-135

-130

-125

-120

0 2 4 6 8 10 12 14

Time / hours

Y po

sitio

n /

µm

0

5

10

15

20

25

30

35

40

Tem

pera

ture

/ º

C

Y Temp.

fRF = 352.202 MHz CWfsampling = 108.369 MHzky = 11.4 mm

Y = 0.0033x2 - 0.2849x - 129.5

-136

-135

-134

-133

-132

10 15 20 25 30

Temperature / oC

Y /

µm

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Summary• Libera is a product family• Most of performance requirements of electron beam

position processor already met without signal conditioning including EM immunity

• Feedback building block with rich connectivity – variety of architectures possible

• 100 + production units fabricated and tested– Very good manufacturing yield– Excellent module to module reproducibility

• First deliveries to clients– 150 units: Dec 2004– First round of Tryouts: Jan 2005