power supplies at bessy ii. 2 pocpa 2010 /k. burkmann-gehrlein, t.schneegans layout who is hzb? –...

Power Supplies at BESSY II

2POCPA 2010 /K. Burkmann-Gehrlein, T.Schneegans

Layout

Who is HZB? – Bessy II Storage Ring

– The Metrology Light Source (MLS) of the PTB

Types of power supplies installed at BESSY II and MLS

Upgrade Programm for BESSY II– Topping up

– Fast orbit feedback

Future Project BERLin Pro Berlin Energy Recovery Linac Prototype


Who is HZB?Former

HMI

Former

BESSYSince 1st of January 2009

Helmholtz-Zentrum Berlin

Für Material und Energie

•BER II

•ISL

•Photovoltaic

•BESSY II

•MLS

•SC RF


Bessy II Storage Ring

4

BESSY II Storage Ring:

Circumference 240 m

Electron energy 1.7 GeV

e- beam current up to 300 mA

32 Bending Magnets

144 Quadrupole Magnets

112 Sextupole Magnets

144 Corrector

User operation since 1998


The Metrology Light Source (MLS) of the PTB

MLS Storage Ring:

Circumference 48 m

Electron energy 105-630 MeV

e- beam current 1 pA to 200 mA

8 Bending Magnets

24 Quadrupole Magnets

24 Sextupole Magnets

28 Corrector

User operation since 2008


Types of power supplies installed at BESSY II and MLS

< 100W

130 devicesmade by:

BESSY

< 100W

130 devicesmade by:

BESSY

100 W–1 kW

240 devicesmade by:

BESSY Rohrer (GER) WME (GER)

100 W–1 kW

240 devicesmade by:

BESSY Rohrer (GER) WME (GER)

1 kW–10 kW

50 devicesmade by:

Delta (NL) Danfysik (DK)

1 kW–10 kW

50 devicesmade by:

Delta (NL) Danfysik (DK)

10 kW–100 kW

60 devicesmade by:

Danfysik (DK) Jäger (GER)

10 kW–100 kW

60 devicesmade by:


> 100 kW

5 devicesmade by:


> 100 kW

5 devicesmade by:


In The year 2004: 485 power supplies and 1 beamloss per month: MTBF = 40 years


Upgrade Programm for BESSY II: Topping Up

Today: 3 injections a day Future (2013): Topping Up

In the Top-Up operation lost electrons are replaced continuously after minutes rather than every eight hours in order to keep a nearly constant beam current.

– A new 50 MeV Linac for Top Up and flexible fill pattern (Operation starts erly 2011)– Sextupole PS for 10 Hz dynamic cromaticity correction in the booster synchrotron (Operation starts end 2010)


Upgrade Programm for BESSY II: Fast orbit feedback

Today:

0.2 Hz transversal global orbit feedback

Overall there are 122 corrector magnets installed as auxilliary windings in the 112 sextupole magnets. 48 for horizontal plane

74 for vertical plane


Old Power supplies for the slow (0.2 Hz) transversal orbit feedback

Power Supplies ROHREr

AD

A 1

6 IO

8 In

terf

ace

bo

ard

Analog Setpoint Resolution up to 19 Bit

Two analog readbacks 16 bit resolution.One Slow High precission ADC One 100 kHz ADC

Digital Status

Digital controls

Trigger Setpoint

+

Shunt resistor

Linear Power Stage

+

Stability: ±100 ppm ripple +drift3db bandwidth: <10 HzCAN-Bus

Em

bedd

ed C

ontr

olle

r

Ma

gn

et

Mains

Terminal

Ext Interlock Terminal

Old Corrector PS

Sh

un

t resisto

r1 Hz 10 Hz 100 Hz 1000 Hz

0,01

0,1

1

10

hor. Steerer vert. Steerer

Am

plitu

de (D

C-n

orm

iert)

Frequenz

-100 °

0 °

100 °

Pha

se


Eliminate perturbation sources wherever possible

No Noise is better than Anti-Noise:

R.Müller

BPM Measurement

Caused by switching of muliplexers on the Interfaceboard


Upgrade Programm for BESSY II: Fast orbit feedback

Future (2012): Fast Orbit Feedback 200 Hz

The concentration of almost 50 experimental stations in the experimental hall increases environmental noise, thereby adversely affecting the resolution and stability of measurement setups.

Phase I •replacement of all corrector power supplies aims at higher correction speed (20Hz – 60Hz)

Phase II •replace today’s multiplexed analog beam position monitors (BPMs) by parallel processing fast digital units to increase correction precision:


New power supplies for the fast (200 Hz) transversal orbit feedback

Power Supplies WME PA4008\11

AD

A 1

6 IO

8 In

terf

ace

bo

ard



Digital Status

Digital controls

Trigger Setpoint

+

DCCT2-Monitor

DCCT1-Regulation

Linear Power Stage

+

Second Analog Setpoint +/-10V for +/-Imax

Stability: ±100 ppm ripple +drift3db bandwidth: 1 kHzCAN-Bus

Em

bedd

ed C

ontr

olle

r

Analog

Modulation Input

Ma

gn

et

Mains

Terminal

Ext Interlock Terminal

DC

CT

1-R

egu

lation

New Corrector PS

1 Hz 10 Hz 100 Hz 1000 Hz0,01

0,1

1

10

hor. Steerer vert. Steerer

Am

plitu

de (D

C-n

orm

iert)

Frequenz

-100 °

0 °

100 °

Pha

se



1 Hz 10 Hz 100 Hz 1000 Hz0,01

0,1

1

10

Am

plitu

de in

mT/

A

Frequenz

-100 °

0 °

100 °

Pha

seTransfer function for the complete system:

power supply →magnet (auxilliary coils in BESSY II sextupoles )

→vacuum chamber→magnetic field at the place of the e-beam

Conclusion:Up to several 100 Hz the correlation is rather linear


100mHz 1Hz 10Hz 100Hz 1kHz1mA

10mA

100mA

1A

10A

Modulationsfrequenz

VS3 HS4 HS1

Spi

tzen

stro

m New power supplies for the fast (200 Hz) transversal orbit feedback

Output current an voltage:

Due to the limited output voltage of 40 V and the inductances of the different loads the output current of 8 A at DC-operation will be limited for AC operation as shown

below



2009 Installation und Inbetriebnahme der schnellen DatenübertragungenAufbereitungen der schnellen Strahllagemessung

2010 Entwicklung des FOFB-Systems zur Einsatzreife, Einsatz des Pilotsystems im BetriebAusstehend: Bestellung der ersten Charge „schnelle Powersupplies“

2011 Einbau der Powersupplies, sobald geliefert und Shutdownzeit vorhandenInbetriebnahme und Ausbau der entsprechenden FOFB-StufeBestellung und Lieferung der fehlenden „schnelle Powersupplies“, Inbetriebnahme…

2012 Charakterisierung und Tuning

2013

Time schedule

R.Müller


Future Project: BERLinPro Berlin Energy Recovery Linac Prototype

What can be the succsessor for our 3rd generation lightsource BESSY II?

ERLs hold the promise of becoming the future backbone of the SR sources, satisfying the needs of the current user community.

BERLinPro is designed to develop and to demonstrate the CW LINAC technology and expertise required to drive next-generation light sources that are based on ERL principle

03/2011 first beam of srf photo electron source conceptual design report ready2016 recirculation, energy recovery →

start of accelerator physics experiments


Thank you very much

for your attention.

Power Supplies at BESSY II



N. Hubert-SOLEIL 2009 DIPAC


AD

A 1

6 IO

8 In

terf

ace

bo

ard



Digital Status

Digital controls

Trigger Setpoint

+

DCCT2-Monitor

DCCT1-Regulation

Linear Power Stage

+

INom= ± 8 AUNom= ± 40 V

CAN-Bus

Em

bedd

ed C

ontr

olle

r

Erste Stufe der Realisierung des FOFB

Ansteuerung nur über den vorhanden CAN-Bus Anschluss.

Zu erwarten sind Bandbreiten > 10 Hz.

Die obere Grenze ist durch die Ansteuerung gegeben und erst im realen Test zu bestimmen

Die zur Zeit global eingebauten alten Netzgeräte sind nur unterhalb 10 Hz, und das auch erst nach Umbau aller Geräte, einsetzbar


DC

CT

2-M

on

itor


AD

A 1

6 IO

8 In

terf

ace

bo

ard



Digital Status

Digital controls

Trigger Setpoint

+

DCCT2-Monitor

DCCT1-Regulation

Linear Power Stage

+

Second Analog Setpoint +/-10V for +/-Imax

CAN-Bus

Em

bedd

ed C

ontr

olle

r

Analog

Modulation InputD

CC

T1-

Reg

ulatio

n

Zweite Stufe der Realisierung des FOFB

Ansteuerung (z.B. auch für ein langsames Feedback <1 Hz) über den vorhanden CAN-Bus Anschluss.

Zusätzlich Sollwertvorgabe über den Modulationseingang der Netzgeräte aus dem unabhängig aufgebauten schnellen Feedbacksystem stammend.


Mögliche weitere Stufe drei der Realisierung des FOFB

Ansteuerung über den vorhanden CAN-Bus Anschluss. Nur noch Remote Control und eventuell konstante Setzwerte werden hierüber zugestellt.

Die Werte aus dem unabhängig aufgebauten schnellen Feedbacksystem werden digital über einen schnellen neuen Netzwerkanschluss zugestellt.

CAN-Bus

Für Remote Control

Schneller Netzwerkanschluss für das komplette Feedback


Analog Setpoint including Modulation

Analog readbacks Slow and Fast

Digital Status

Digital controls

Trigger Setpoint

DCCT2-Monitor

DCCT1-Regulation

Linear Power Stage

+

Neue Interfacekarte.

Bisher noch nicht geplant.

Eventuell nur neuen Embedded Controler auf alter ADA 16


Analog Setpoint including Modulation

Analog readbacks Slow and Fast

Digital Status

Digital controls

Trigger Setpoint

DCCT2-Monitor

DCCT1-Regulation

Linear Power Stage

+ INom= ± 8 AUNom= ± 40 V

Schneller Netzwerkanschluss für das komplette Feedback

Mögliche weitere Stufe vier der Realisierung des FOFB

Remote Control über einen schnellen neuen Netzwerkanschluss.

Auch die Werte aus dem schnellen Feedbacksystem werden digital über einen schnellen neuen Netzwerkanschluss zugestellt.

Neue Interfacekarte.

Bisher noch nicht geplant.


Dietmar Simmering

power supplies at bessy ii. 2 pocpa 2010 /k. burkmann-gehrlein, t.schneegans layout who is hzb? –...

Documents

schneegans bessy

bessy rohrer ger wme

schneegans old power

sextupole magnets

danfysik dk jger ger

ptb types of power supplies

isl photovoltaic bessy

corrector magnets