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GPC Y ASOCIADOS S.A.

Veléz Sarsfield 201640 Martinez

Buenos Aires

Tel.: +54 (9) 11 5993 8719

info@gpcasoc.com.ar

https://gpcasoc.com.ar/

Horne Technologies cc

PO Box 536

Betty's Bay, 7141

Tel.: +27 (0)76 563 2084

info@hornet.cc

www.hornetechnologies.co.za

Building of FAULHABER MINIMOTOR SA, Croglio, Switzerland

FAULHABER MINIMOTOR SA

Zona Artigianale 8, Madonna del Piano

6980 Croglio

Tel.: +41 (0)91 611 31 00

info@faulhaber.ch

Building of FAULHABER MICROMO LLC, Wien, Austria

FAULHABER MICROMO LLC

14881 Evergreen Avenue

Clearwater, FL 33762-3008

Tel.: +1 (727) 572 0131

marketing@micromo.com

www.faulhaberUSA.com

NRC Engineering & Precision Drives Co., Ltd.

17F., No. 890, Jingguo Rd., Luzhu Dist.

Taoyuan City 33858, Taiwan, R.O.C.

Tel.: +886 (0) 3-316-1838

info@nrc.com.tw

www.nrc-precidrives.com

EDEL Teknoloji Sistemleri Sanayi ve Ticaret Ltd.Şti

Folkart TowersAdalet Mah.Manas Blv. No:47B/2809

35530 Bayraklı/İzmir

Tel.: + 90 232 215 08 91

info@edelteknoloji.com

www.edelteknoloji.com

Building of FAULHABER Asia Pacific Pte Ltd., Singapore

FAULHABER Asia Pacific Pte Ltd.

Blk 67 Ubi Road 1, #06-07 Oxley Bizhub

Singapore 408730

Tel.: +65 6562 8270

info@faulhaber.com.sg

Compotech Provider AP

Gustavslundsvägen 145, 4 tr

167 51 Bromma

Tel.: +46 (0) 8 441 58 00

info@compotech.se

www.compotech.se

MICROPRIVOD Ltd.

56 (bldg. 32), Shosse Enthusiastov

111123 Moscow

Tel.: +7 495 2214 052

info@microprivod.ru

www.microprivod.ru

Building of FAULHABER Polska sp. z o.o., Poznan, Poland

FAULHABER Polska sp. z o.o.

Ul. Górki 7

60-204 Poznan

Tel.: +48 61 278 72 53

info@faulhaber.pl

FAULHABER Malaysia Sdn Bhd

1A-2-01 & 02 · One Precinct · Lengkok Mayang Pasir

11950 Bayan Baru · Penang · Malaysia

Tel.: +60 4 619 2570

info@faulhaber.my

Swiss Amiet Co., Ltd.

W-903, SK V1 Center, 11 Dangsan-ro 41-g

Yeongdeungpo-gu,07217, Seoul

Tel.: +82 (0) 2 783 4774

info@swissamiet.com

www.swissamiet.com

Shinkoh Electronics Co., Ltd.

Tokyo Sales Office, Motor Sales Division8F, REID-C OMORI building, 6-20-8

Minami-oi, Shinagawa-ku, Tokyo 140-0013

Tel.: +81 (0) 3 6404 1003

motor-info@shinkoh-elecs.co.jp

www.shinkoh-faulhaber.jp

Building of FAULHABER Italia S.r.l., Lomazzo, Italy

FAULHABER Italia S.r.l.

Via Cavour 2

22074 Lomazzo CO

Tel.: +39 0236714708

info@faulhaber-italia.it

Inteltek Automation JV

S.No. 100/5, Ambegaon

Pune - 411046

Tel.: +91 (0) 20 39392150

info@inteltekindia.com

www.inteltekindia.com

Lewenstein Technologies Ltd.

1 Ha'arava St. Givat Shmuel

5400804 Israel

Tel.: +972 3 9780 800

info@l-tech.co.il

www.l-tech.co.il

Electro Mechanical Systems Ltd.

Eros House, Calleva Industrial Park, Aldermaston

Reading, RG7 8LN

Tel.: +44 (0) 118 9817 391

info@ems-ltd.com

www.ems-limited.co.uk

Building of FAULHABER France SAS, Montigny-le-Bretonneux, France

FAULHABER France SAS

Parc d’activités du Pas du Lac2, Rue Michaël Faraday

78180 Montigny-le-Bretonneux

Tel.: +33 (0) 1 30 80 45 00

info@faulhaber-france.fr

www.faulhaber.com

ELMEQ Motor

Passeig Ferrocarrils Catalans 178

Cornellà de Llobregat 08940 (Barcelona)

Tel.: +34 93 422 70 33

marketing@elmeq.es

www.elmeq.es

MOVETEC OY

Suokalliontie 9

01740 Vantaa

Tel.: +358 (0) 9 5259 230

info@movetec.fi

www.movetec.fi

Routech s.r.o.

Dr. Milady Horákové 185/66

460 06 Liberec

Tel.: +420 489 202 971

info@routech.cz

www.routech.cz

Compower ApS

Marielundvej 29

2730 Herlev

Tel.: +45 (0) 44 92 66 20

info@compower.dk

www.compower.dk

Marte Científica e Instrumentação Industrial Ltda

Av Fco Andrade Ribeiro 430

37540-000 Santa Rita do Sapucai, MG

Tel.: +55 (11) 3411 4500

motores@marte.com.br

www.marte.com.br

Building of FAULHABER Drive System Technology (Taicang) Co., Ltd.,Taicang, China

FAULHABER Drive System Technology (Taicang) Co., Ltd.

Eastern Block, Incubator Building, No. 6 Beijing Road West

Taicang 215400, Jiangsu Province

Tel.: +86 (0) 512 5337 2626

info@faulhaber.cn

Building of FAULHABER Benelux B.V., Eindhoven, Netherlands

FAULHABER Benelux B.V.

High Tech Campus 9

5656 AE Eindhoven

Tel.: +31 (0) 40 85155-40

info@faulhaber.nl

Building of FAULHABER Austria GmbH, Wien, Austria

FAULHABER Austria GmbH

Modecenterstraße 22/C89

1030 Wien

Tel.: +43 1 7963149-0

info@faulhaber-austria.at

ERNTEC Pty. Ltd.

15 Koornang Road

Scoresby, VIC 3179

Tel.: +61 3 9756 4000

Fax: +61 3 9753 4000

sales@erntec.net

www.erntec.net

Building of Dr. Fritz Faulhaber GmbH & Co. KG, Schönaich, Germany

Headquarter

DR. FRITZ FAULHABER GMBH & CO. KG

Faulhaberstraße 1

71101 Schönaich

Tel.: +49 7031 638 0

Fax: +49 7031 638 100

info@faulhaber.de

www.faulhaber.com

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FAULHABER is currently not represented in the selected country.

Please contact us with your request at

Info@faulhaber.com

Jan-Christopher Mohr

Area Sales Manager

Tel.: +49 (7031) 638 158

jan-christopher.mohr@faulhaber.de

Michael Schütte

Area Sales Manager

Tel.: +49 (7031) 638 456

michael.schuette@faulhaber.de

Daniel Brönnimann

Area Sales Manager

Tel.: +41 (0) 79 570 0814

daniel.broennimann@faulhaber.ch

Rolf Leitner

Regional Sales Manager

Tel.: +41 (0) 79 422 3348

rolf.leitner@faulhaber.ch

Rafael Steinemann

Area Sales Manager

Tel.: +41 (0) 79 932 1645

rafael.steinemann@faulhaber.ch

PiezoMotor in positronemission tomography

Finding the head of a pin

"Discovering the mother tumor is normally quite easy and possible through many techniques. But to discover all the metastases, where many are the size of a pinhead, is very difficult," explains Dr. Martin Pärnaste, head engineer in the Cyclotron Systems division of GE Healthcare in the Swedish city of Uppsala. PET helps to detect such metastases. This can be of decisive importance for subsequent therapy.

Like X-ray and computer tomography (CT), PET generates its images with the help of a small dose of radioactive radiation. The radiation is not emitted by a device that directs it at the body from the outside in this case, however. Instead, it comes from radioactive particles that are previously administered to the patient. They are generally mixed with glucose in a so-called radiodiagnostic agent or “tracer” and injected into the bloodstream.

PiezoMotor in positronemission tomography
With positron-emission tomography (PET), it is possible to very accurately distinguish cancer cells from the surrounding tissue. © GE HEALTHCARE

Short half-life

Relatively harmless, low-radiation substances are used for the PET diagnostic agent. They decay rapidly and leave no critical residues. In about 90% of cases, isotope 18F of the halogen Fluorine is used. It has short half-life of approximately 110 minutes, which means that it has lost nearly all of its radioactivity after one day. Other isotopes with a similarly short half-life are used as well.

Because the PET tracers decay so quickly, they cannot be kept in supply like other materials. They must be produced fresh in a particle accelerator – the cyclotron – shortly before they are used. This must not be located too far away from the place of use as every minute counts, even during transport.

Particle race on a spiral path

The first cyclotrons were constructed back in the 1930s by pioneers in particle physics. Their functional principle has since then been modified and further developed numerous times – including the world's largest particle accelerator, CERN, located in Geneva. The technology has also proven itself in medical technology as well, however. To produce isotopes for PET, negatively charged hydrogen ions are accelerated in a vacuum chamber located within the cyclotron. The ions are accelerated by electric fields and kept on a spiral path by a strong magnetic field.

At the end of this path, they fly through a thin graphite foil, thereby losing their electrons and becoming positively charged protons. As a result of this charge reversal, their trajectory changes from the previous spiral movement to a straight line. The orientation of the foil determines the direction of the proton beam. It is directed towards a reaction chamber, the so-called target, in which the source material for the isotope is located. There, the proton beam triggers a nuclear reaction and produces the required isotopes from the target content.

A number of years ago, Dr. Pärnaste and his team were assigned the task of further improving the reaction as well as developing a machine that is as small and economical as possible. It was to contribute to making clinical access to PET isotopes simpler and this imaging technique more widely available. The result of the development was named GENtrace and was launched in 2017 with great success.

PiezoMotor in positronemission tomography
© GE HEALTHCARE

Magnet-free drive technology

To produce the largest possible quantity of isotopes or isotopes from various elements in a single pass, the new cyclotron has three targets. The orientation of the beam must thus be variable so that it can strike all three targets. To achieve this, the carrier on which the graphite foil is affixed is moved using motor power.

Inside of a cyclotron, however, are conditions with which standard electric motors can hardly cope: magnetic fields, vacuum, electric fields and radiation interfere with their function or make them outright impossible. The motor for directing the beam is therefore normally located outside of the actual cyclotron. Its movement is then transferred to the foil carrier by means of a complex mechanical construction. This has considerable disadvantages, including the mechanical play and the extensive sealing that is required where moving parts pass through the wall of the vacuum chamber.

These disadvantages disappear when using a piezo motor. Its functional principle makes it immune to the inhospitable conditions in the cyclotron. Because, unlike a classic electric motor, it requires neither magnetic components nor rotating parts to convert electric current into movement. Its operating principle is based on the fact that the shape of a piezoceramic element changes when a voltage is applied to it.

Technology from the neighbour

The experts from GE Healthcare became aware of the technology from PiezoMotor through an article in a technical journal. Conveniently, it then turned out that both companies are based in Uppsala. "After testing several micromotors and motion solutions, we finally had a breakthrough in the development. In the final design, we use two drives from PiezoMotor – a 20N linear motor to move the proton beam, and a nonmagnetic rotary motor with 50 mNm torque to adjust the ion extraction," concludes Dr. Pärnaste.

This second drive located within the cyclotron is responsible for positioning the ion source. To extract as many ions as possible with the help of an electrode, the relative position of source and electrode must be repeatedly adjusted. Thanks to the piezo motor, this is now possible during running operation, which also significantly shortens the maintenance time for calibrating the system.

"PiezoMotor offers a broad product range and modular design. We have found many options for both linear and rotating motors with different features from which we can select the appropriate models," Dr. Pärnaste explains. "Furthermore, PiezoMotor has a highly competent team of engineers and they contributed a lot during our product development process."

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