Exhibition preview: EXPO MT-10

Tenth International Conference on Magnet Technology Boston, Massachusetts, USA 21-25 September 1987

Exhibition preview: EXPO MT-10 B u t t e r w o r t h Scientific Limited Butterworth Scientific Limited, the publishers of Cryogenics, will be taking part in the EXPO MT-10 exhibition. Current issues of the monthly journal, which include many papers on new developments in cryogenic engineering and breakthroughs in cryogenic materials technology, will be on display, alongside several other Butterworth Scientific publications of interest to conference delegates. Information will also be available on the new Butterworth Scientific journal, Gas Separation & Purification, to be launched later this year. The subject areas covered by this new journal should be of interest to several attendees - so do come and take a look. The Proceedings of ICEC 11, the latest in the series of ICEC Proceedings, will be on display. The volume contains papers from last year's conference in Berlin-West, Germany, reproduced in full. The Proceedings of the previous meeting,ICEC 10, which took place in Helsinki, Finland, will also be on show, along with Cryogenics Handbook, the international directory of manufacturers, suppliers and research projects in the cryogenics field. Another journal, the

International Journal of Refrigeration, will also be on display. This is a bimonthly journal published by Butterworth Scientific for The International Institute of Refrigeration. The Butterworth Scientific representative manning the stand will be

520

Charlotte Romanick. Charlotte would welcome comments on any of the above mentioned publications and would like to hear what our readers and subscribers want from the company in the future. (Butterworth Scientific Limited, PO Box 63, Westbury House, Bury Street, G uildford, Surrey G U2 5B H, UK) Oxford Instruments A m e r i c a , Inc.

North

Oxford Instruments North America, Inc. will be at EXPO MT-10 displaying what is believed to be the highest field superconducting magnet commercially available to date. The magnet, which produces 18 T at 2.2 K and 16.5 T at 4.2 K, is the latest in Oxford's line of 'Magnabond' high performance Nb3Sn compact solenoids. The new magnets, which are manufactured from optimized multifilamentary superconductor, offer a number of advantages over competitive magnets including economical cooldown and low operating currents, which in turn allows the use of more economical power supplies as well as fast energization rates. Other important features include persistent mode operation; decay rates being of the order of 10 -4 per hour or better and field homogeneities of 10 =3 or better over a 10 mm DVS. The combination of 'Magnabond" construction with extremely stable multifilamentary conductor allows, in an 18 T magnet, the low field noise, hysteresis and remanance characteristics now

Cryogenics 1987 Vol 27 September

expected from modern filamentary superconducting magnets. There are 13 Nb3Sn magnets in Oxford's 'Magnabond' range, providing fields from 10 to 18 T with a wide range of bore size and field homogeneities. All of the magnets are available in low loss helium devices which will accept standard helium 4 variable temperature inserts or they can be adapted for inclusion in helium 3 systems or dilution refrigerators. (Oxford Instruments North America, Inc., 3A Alfred Circle, Bedford, MA 01730, USA and, for European enquires, Oxford Instruments Limited, Osney Mead, Oxford OX20DX, UK)

Specialist equipment Instruments

from

Oxford

-I‘enth International

Conference on Magnet Technolog)

Boston, Massachusetts, USA 21-25 September 1987

Exhibition Interatom

preview:

EXPO

MT-l

0

GmbH

In 1985 Interatom Gmbli, an affiliate of the Siemens group, took over responsibility for the group’s activities in the field of superconducting magnets. Based on more than 20 years experience of the Siemens Research Laboratory in Erlangen, Interatom offers magnets for the whole range of applications, from MR imaging and crystal pulling to magnetic separation. Emphasis is placed on integrated system engineering, including all supply units, cryogenic equipment and controls. A test area enables complete testing to check user specifications and overall system performance. Earlier in 1987 the group received the DESY contract for fabrication of 122 quadrupole coils for the HERA proton ring. In April this year a major R + D project was successfully completed. Two superconducting 180 ’ bending magnets for the compact synchrotron light

Two 180’ bending magnets for a compact synchrotron light source

source COSY at BESSY reached the design field of 4.5 T and the specified ramping rates. Closely related to the field of superconducting are magnets Interatom’s activities in accelerator

Elma Engineering

Cross-sectional view of quadrupole coil for the HERA proton ring

Elma Engineering, established in 1964, has earned a reputation for supplying reliable products from miniature precision coils to beam handling equipment weighing several tons. Representatives from the company will be on hand at EXPO MT-10 to show customers some of their latest equipment. Specific magnetic products inair clude and water-cooled beam handling electromagnets, coils, focussing coils, solenoids and

especially design, technology, manufacture and testing of superconducting accelerator cavities. (Interatom GmbH, Friedrich-EbertStrasse, D-5060 Bergisch Gladbath 1, FRG

laboratory magnets. Other products manufactured at the Palo Alto facility include epoxy cast coil power and distribution transformers to 5 MVA and 34 kV class, induction heating generators and solid state temperature controls. Elma Engineering also sells and services a full line of RF power supplies for the semiconductor processing industries. Elma’s European offices and plant are located in Freiburg, FRG. (Elma Engineering, 1066 East Meadow Circle, Palo Alto, CA 94303, USA)

Cryogenics

1987

Vol 27 September

521

DANFYSIK

PRECISION MAGNET POWER SUPPLIES

Danfysik Series 8000 Precision Magnet Power Supplies are dc, constant current output, power supplies for applications requiring very high stability and low noise combined with reliability and ease of operation. Available with output currents from 120A to 2000A and output powers from 5kW to 300kW, the Series 8000 utilizes the Danfysik Ultrastab DCCT (DC Current Transformer) and a temperature stabilized regulator circuit to give optional stability levels of 1ppm or 1Oppm over an ambient temperature range of 15” C to 35” C. Optically isolated digital control is used to eliminate ground loop and conducted noise. Available with local/remote operator control, RS-232/RS422, IEEE 488, CAMAC or analog interfaces.

522

_..__~

_. ._ _. ^

GMW

P.O. Box 2578, Redwood City, CA 94064 Telephone (415) 3684884

In Europe:

Danfysik A/S, DK-4040 Jyllinge, Denmark, Telephone (45-2) 38 81 50

Cryogenics

1987

Vol 27 September

,

Tenth International Conference on Magnet Technology Boston, Massachusetts, USA 21-25 September 19S7

Exhibition GMW

preview:

EXPO

MT-l

0

Associates

At EXPO MT--l 0 GMW Associates will have a range of instrumentation precision for magnetic field measurement and mapping and will be introducing a new direct current current transformer (DCCT) for high stability current measurement. Information will also be available on GMW’s range of magnet and ion beam products. Some of the products featured are outlined below. Bartington fluxgate magnetometer. Digital readout of magnetic fields in therangel 200000nT(lO 5 2G) with calibration accuracy of 0.005%. Analog output with frequency response from dc. to 10 Hz (-3dB). Group 3 digital Hall teslameter. lncorporating digital linearization and probe temperature correction to measure magnetic fields to 0.01 % precision with 10 ppm per C temperature coefficient. Digital readout in Gauss or Tesla on a seven character LED display. RS-232-C. serial fibre optic or IEEE interfaces. Analog output with frequency response from d.c. to 3 kHz (optionally 9 kHz). Metrolab NMR teslameters. Available in bench, 19 in rack mounting or NIM format. High precision magnetic field measurement using nuclear magnetic resonance (NMR) probes. Field range is from 0.043 T (430G) to 13.7T with 10 ’ T (1 mG) resolution. Field display on field (T) or NMR frequency (Hz). Built-in RS-232-C and IEEE-488 interfaces with options for multiplexing up to eight probes and for

automatic search and lock over the full probe range.

Metrolab Precision NMR teslameter for magnetic field measurement with 0.1 IIT resolution in the range 0.043 13.7 T

f;tis

Research

Company,

. Janis Research Company designs, fabricates and services cryogenic equipment tailored and optimized to the specific needs of each scientist. A cryostat from Janis may be as simple as a small detector dewar or as complex as a magneto-optical work station or a rocket borne supercritical helium system. Cryostats are shipped directly from our factory to our customers in Europe, Asia, Australia, New Zealand, Africa and the Americas. Does your work require cryogenic systems for any of the following experiments? - Photoluminescence - Mossbauer X-ray diffraction and EXAFS - ESR Hall and electrical conductivity studies - Faraday balance magnetometers -Vibrating sample magnetometers -Superconducting magnet systems with: room temperature bore, optical access, variable tempera-

Danfysik Ultrastab DCCT. A range of DCCTs or transductors with high stability, low noise and frequency response to above 500 kHz. Standard units to 2000A with higher current ratings to order. (GMW Associates, 629 Bair Island Road, Suite 113, Redwood City, CA 94063, USA)

ture inserts (0.3 to 600 K), VSM (complete system) and crystal pulling furnace. What type of cryogenic system is best suited to your style of work’! -Vertical bore, bottom window Split coil, horizontal optical access Low loss/mechanically refrigerated magnet systems Sample in exchange gas - Sample immersed directly in flowing helium vapour Modular systems with demountable magnets and inserts. Of special interest and popularity is the Janis SuperOptiMag system, provided in standardized configurations for magneto-optical experments between 1.6 and 300 K. Superconducting split solenoids offer magnetic fields of 5, 6 and 7 T (at 4.2 K) with optical accessalong and perpendicular to the field. Straight solenoids offer fields up to 10T. Janis Research began supplying superconducting magnets with their cryostats very soon after the company was started in 1961. Con-

Cryogenics

1987

Vol 27 September

523

Exhibition

preview:

EXPO MT-l

0 Vector

Fields Limited

Vector Fields is an international company recognized as a world leader in the specialist field of electromagnetic computation. The company offers a very comprehensive range of software using the latest finite element techniques for very accurate prediction of the perelectromagnetic formance of devices. The range of software, used extensively in USA, Europe and Japan, has been developed over a period of 15 years. It has been proved in practice by designers of superconducting magnets, MRI shielding, accelerators, actuators, motors, generators, transformers, tape heads, electron beam lenses and many other devices. The software on show at EXPO MT-l 0 is outlined below. Cryogenic

equipmentfrom Janis Research Company

tact Janis for references about systems which may aleady be in use at your facilities or nearby. (Janis Re-

Spaulding

Fibre Co.

On its stand at EXPO MT 10 Spaulding Fibre Co. will be exhibiting a full line of cryogenic high pressure laminated materials and fabricated parts used for thermal and electrical insulation in cryoFeatured applications. genic materials are the glass-expoxies, G10CR and G-l 1 CR, the glass polyimide, Spaulrad, and graphite expoxy. SCR-Spaulding cryogenic radiation materials have been extensively tested at the Argonne National Laboratory, EGG, Los Alamos, MIT

524

search Company, Inc., 2 Jewel Drive, PO Box 696, Wilmington, MA 01887-0896, USA) Oak Ridge, Penn State and Japan, among others, and have been completely characterized at cryogenic temperatures by the NBS, Boulder, Colorado. The Spaulding CR grades have a proven record for years of successful use in cryogenic applications. They are very closely controlled and have specifications that are ‘frozen’ and not subject to change or alteration. The company’s display includes a variety of close tolerance hi-tech parts that illustrates the capabilities of the fabricating division. (Spaulding Fibre Co., 310 Wheeler Street, Tonawanda, NY 14150, USA)

Cryogenics 1987 Vol 27 September

TOSCA. The widely used 3D analysis package which has been extensively improved recently and includes new sophisticated yet user friendly pre- and post-processing facilities. CARMEN. The 30 eddy current analysis package which also has new pre- and post-processing modules. PE2D. The versatile 2D package for a wide range of applications where 30 analysis is not required. It includes error estimation facilities for economical computing and assessment of results. In addition to software, the company offers a full range of supporting services worldwide through distributors and application en-

Exhibition

preview

gineers in Europe, Japan and North America. A comprehensive programme of training courses is operated in all major centres ranging from basic introduction courses to advanced courses for experienced users. Active user groups have been formed and are encouraged by the company to exchange experiences and ideas related to the application of the software. (Vector Fields Limited, 24 Bankside Kidlington, Oxford OX5 1JE. UK)

Manufacturing Line - Cryogenic Valves

- Bellows seal Valves - Cryogenic Transferline Couplings - Cryostats and Ejectors - Tailor made Cryogenic Components

Cryogenic On/Off

Valve

with position indication and limit switches Finite element model celerator Laboratory cyclotron using TOSCA

Vacuumschmelze

of

the

Texas

Ac-

superconducting

GmbH

Vacuumschmelze GmbH, DHanau, the leading company in development and production of superconducting wires is expecting a substantial increase in work involving superconductors. Therefore, the West German company has constructed a new factory. Production commenced in September 1986

WEKA Ltd.

Hofstrasse 8, CH-8620 Wetzikon, Switzerland Phone 011932 23 02, Telex 875 744 Fax 01I932 43 03

Cryogenics

1987

Vol 27 September

525

contribute to the success of many large facilities in the field of High Energy Physics and Fusion Research.

Brown Boveri manufactured one toroidal field coil weighing 40 tons for the Large Coil Task at Oak Ridge National Laboratory Tennessee, USA.

Brown Boveri manufactures 225 bending magnets including the superconducting cable for the HERA proton rings of DES): Hamburg, FRG.

BBC Brown Boveri, Inc. 1460 Livingston Avenue North Brunswick, N.J. 08902, USA

526

Crvoaenics

1987

Vol 27 Seotember

BBC BROWN BOVERI

Cryomagnetics,

Exhibition

preview

Samples of Al-clad superconductors duced by Vncuumschmelre

pro-

and the 6300 m7 area established with modern equipment enables the company to produce a wide variety of different superconductors. For the HERA accelerator at DESY, D-Hamburg, ail keystone cables necessary for the quadrupoles and the Al-stabilized flat cables for the Hl detector magnet has been produced and tested successfully. At the Vacuumschmelze exhibition stand at MT 10 several examples of conductors will be shown. In addition, information on the whole production programme will be available. As a company which has within its production spectrum high grade metallic alloys with special physical properties, sophisticated electronic components, soft and hard magnetic materials, and powder metal alloys, innovation has always been a necessity. For the R + D Department of Vacuumschmelze it is, therefore, taken as a matter of course, that the company is also working on ceramic high T, conductors, to bring the promise of such materials to the stage of technological usability. (Vacuumschmelze GmbH, Postfach 2253, D6450 Hanau 1, FRG)

Inc.

Cryomagnetics, Inc., manufacturer of standard and custom superconducting magnets, instrumentation and complete magnet systems will introduce and demonstrate their new IPS-100 superconducting magnet power supply at EXPO MT-1 0. This new supply combines the functions of sweep generator, power supply, energy absorber and many other instruments into a single compact unit. IEEE-488/RS232C control is available as an option. The IPS-100 provides the user 0 100 A of stable output current at up to + 5 V. The power system is linear with extremely low noise and ripple and is fully quench protected. Quench detection with automatic shutdown is standard. Current limit, voltage limit and charge rate can each be set on 10 turn front-panel controls and all settings can be displayed on 31 digit LED displays charging before actually the magnet. Power system monitoring functions include displaying of present current limit, charge rate, voltage limit, power supply output current, power supply output voltage and actual magnet charging voltage. Dual persistent switch heater power supplies are also built in. Cryomagnetics will also introduce their new Computer Interface Module (CIM) which is compatible with the IPS-100 and most other superconducting magnet system devices. The CIM provides total control of IPS-100, helium level monitor, nitrogen level monitor and temperature monitor over IEEE-488 and/or RS-232C standard computer interfaces. Cryomagnetics sales engineers will be available at MT 10 to discuss specific applications. (Cryomagnetics, Inc., PO Box 548, Oak Ridge, TN 37831, USA)

Opuatlon rll,L 70 D&CUSS

YOUR PPUCA7/OUS OR WRITE 9R OUR FREE “GUIDE ) SUPERCONDUCTiNG AGNETS

AND SYSIEMS.”

Aagnets, power supplies, :ryothermometers, level :ontrollers. md complete :ryomagnetic systems J
615) Cryomagnetics’ magnet power

IPS-100 supply

superconductmg

Cryogenics

482~Q551

TELEX

1%

883-945

lNOVATlON AND EXCELLENCE IN CRYOMAGNETICS

1987

Vol 27 September

527

Tenth International Conference on Magnet Technology Boston, Massachusetts, USA 21-25 September 1987

Exhibition American

preview:

Magnetics,

Inc.

American Magnetics, Inc. (AMI) continues to expand its cryogenic instrumentation product line to offer the customers a wide variety of options for power supplies, magnet programmers, cryothermometers, liquid nitrogen level controllers and liquid helium measuring devices. AMI will introduce its Model 160 dipstick at superconducting MT-IO. This low loss, portable measuring instrument provides an inexpensive alternative to flutter tubes and carbon resistor dipsticks for accurately and quickly measuring the liquid helium level in storage cans and shipping vessels. AMI will also display the new sample-and-hold Model 133 helium level meter. This unit includes all the features of the sampleand-hold meter AMI has supplied the cryogenic community for many years. In addition to a digital display, two adjustable alarms, alarm set points displayed on panel meters and expanded sample-and-hold range, AMI has incorporated many features that users have requested in a helium level meter. It is worth a visit to the AMI display just to see this new instrument. AMI will introduce its Model 440 and Model 441 superconducting magnet power supplies. These new, compact units weigh only 25 pounds and include a 0 -10 V. 0 -100 A regulated power supply and have all the features of the AMI magnet model 400 programmer that has been used extensively throughout the world for many years.

528

EXPO

MT-IO

In case you missed it at previous meetings, AMI will also display its Model 800 microprocessor based magnet programmer that allows the user to control the magnet system from a remote computer via an IEEE-488 or RS-232C interface. Be sure to ask their representatives about the option for using the

Cryogenics 1987 Vol 27 September

Model 133 sample-and-hold meter to provide automatic shutdown of your magnet system in the event of the helium level dropping below the warning point. This attractive feature will prevent an unattended magnet from quenching due to low helium level. AMI can supply you with a single

AMERICAN MAGNETICS,

INC.

EXCELLENCE IN SUPERCONDUCTlNG Cryogenic

Instruments

MAGNETS and Accessories

AMERICAN MAGNETICS, P.O. B0x 2509

INC.

Oak Ridge, TN 3783 I-2509 Telephone (615) 482-1056 Telex 557 592

THE

RIGHT

COLD

The right cold - pushbutton cold! A cold that warms the heart. An ald In the search for superconductors with a high transition temperature, in matrix spectroscopy, tn crystallography, In the cooling of detectors in radio astronomy Achlevlng low temperatures IS now simpler than ever. With our refrigerator cryostats you can select any desired tcmp~rature between 10 and 293 K. Liquid refrigerants arc not nccdcd because the cooltng IS done by a refngerator with a closed helium-gas circuit. The accessones, too, are warmly recommcndcd. For inslance. our VARIOTEMP HR 1 heat controller. which utlllzcs the temperature-dependent vanatlon of resistance sensors. Or our turbomolecular pumping system to generate ]usl the right vacuum for the right dcgrcf? of cold. If you have questions, our appkatlons consultants can give you detailed Information. Give us a call, or write to us at: LEYBOLD-HERAEUS GMBH, Bonner StraOe 498, D-5000 Cologne 5 1, West Germany, Telephone: 02 2 1 / 34 70

LEYBOU)-HERAEUS

Solving your problems through cryogenics. J

Cryogenics

1987

Vol 27 September

529

Tenth Internation;tl Conference on Magnet Technolog\ _ Boston, Massachusetts, USA 21-25 Septembtr 1087

Exhibition

EXPO MT-IO

preview:

instrument or a complete superconducting magnet system that is affordable and that will be delivered when you need it. (American Magnetics, Inc., PO Box 2509, Oak Ridge, TN 37831 2509, USA)

Supercon,

Inc.

Supercon, Inc. has been in the business of manufacturing and sales of superconducting materials for over a quarter of a century: longer than any other company. The emphasis at the exhibition will, however, be on the developments which the Company has made in the last three years in developing Nb Ti fine filament material, mixed matrix wires, N b,Sn and soldered conductors. The adjacent photograph shows the cross-section of an 11 000 filament Nb Ti superconductor developed for the inner cable of the Superconducting Super Collider. It has 51tm filaments in a 0.81 mm diameter wire and it carries in

Supercon, Inc. 11 000 fdament Nb Ti superconductor for the Inner cable of the Superconducting Super Colldur

530

Cryogenics

1987

From Magnex Scientific with control electronics

Magnex

Limited. a honzontaf room temperature bore magnet for mclgnettc resonance spectroscopy applications

Scientific

system

Magnex Scientific Limited is a UK based company specializing in the design and manufacture of complete superconducting magnet systems for NMR and fundamental research applications. Examples of the company’s

range of products will be exhibited at EXPO MT 10 and a shortform brochure covering the company’s main product areas will be available on request. Expert technical design staff will be in attendance to discuss customer’s exact requirements. (Magnex Scientific Limited, 13 and 19 Blacklands Way, Abingdon Business Park, Abingdon, Oxon OX14 1 DY, UK)

excess of 1100 A mm ’ in the Nb Ti at 8T. Other materials on display at the exhibition will include a similar 11 000 filament conductor where the filaments are totally decoupled at zero field as they are separated by a Cu 0.5 wt’!-;, Mn alloy. Also on show will be mixed matrix material containing Cu and 90 : 10 CuNi, Cu and 70:30CuNi and Cu and Ni. These materials are being devel-

opcd for ultrafine filament applications. Bronze matrix, internal tin and powder metallurgy Nb,Sn material, all products of the ‘new’ Supercon, Inc., will be part of the exhibition, as will aluminium stabilized conductors. The economic and technical advantages of soldered conductors will be illustrated. (Supercon, Inc., 830 Boston Turnpike Road, Shrewsbury. MA 01545, USA)

Limited

Vol 27 September

NMR GAUSSMETER

PRODUCTS

Exhibition Huntington

preview VIBRATING

Laboratories

The following products will be exhibited by Huntington Laboratories at EXPO MT 10: remotely high-vacuum and controlled ultrahigh-vacuum devices includitl(] rotary fccdthroughs, linear COilXiill fecdthrfeedthroughs. butterfly vnlves. angle ouyhs. valves and gate valves. Also multimotion fccdthroughs with ‘grabber all shuttered viewports, jaws’, metal bakeable valves, WC-u-flat

SAMPLE MAGNETOMETER

:

-

LABORATORY

-

DEVIATION

-

SOLENOIDS

-

SUPERCONDUCTING

-

HALL AND NMR REGULATORS

-

MONOPOLAR AND BIPOLAR HIGH STABILITY (lo-’ and l@“) POWER SUPPLIES

-

DIGITAL

-

NMR

-

VOLTAGE

-

ISOLATION

ELECTROMAGNETS ELECTROMAGNETS

MAGNETS MAGNETIC

FIELD

INTERFACES

In-viva

SPECTROMETERS

REGULATORS TRANSFORMERS

SOLENOIDS FOR NEUTRON SPIN ECHO SPECTROMETER (LLB CEAKNRS) lc..” h .,I C.” CUM

.1II

1_2T ELECTROMAGNET - 200 mm GAP FOR IN-WV0 NMR SPECTROSCOPY .

l

I

I.

Tel

mechanism

VF-

179

mlcrometcr

from

Huntington

controlled

(8.

-”

Y

ARM

(II-lid92200 Gmbh

&jtbahnsK,sse 32 D-6740 LANDAU RFA Tel 6331 8’2942

1111

LaboratorIes

Agents

.

. aupply .

.

.

. BIPOLAR

hiQh Hability

NMR field regulation

Mock1 VP- 1050 polar~red wlndow from Hunttnqtnn Lat~oratorles

,

ON HUMAN

et Cie

DRUSCH

DitUSCH Mo~lt:l

4

31P SPECTRUM

power

:

AMRC PMRDENMARKT B-2000 ANTWERP BELGIE Tel (3) 231 3775

87

DAY ASSOCIATES P 0 nox 067

unit TAO2

vlewport

Cryogenics

1987

Vol 27 September

531

Exhibition

preview:

EXPO

MT-IO

(R) flanges and fittings. (Huntington Laboratories, PO Box 6304, N. Plymouth. MA 02360, USA)

lntermagnetics

General

Corporation Intermagnetics General Corporation (IGC), the world’s largest company solely dedicated to advanced applications of superconductive technology, and Alsthom, the leading French electrical manufacturer, have formed a joint venture to supply the world market with the highest quality superconductive magnets for magnetic resonance imaging and spectroscopy applications. The IGC-designed MRI magnets will be manufactured at Alsthom’s Belfort facility and will feature the same reliable design that has given the IGC MRI magnet a reputation for high performance and reliability in both mobile and fixed-site MRI systems. The joint venture, called Alsthom lntermagnetics SA. will be featured as part of the IGC and Alsthom exhibits at EXPO MT 10. At the same time, Alsthom and IGC will present individual exhibits of each company’s magnet technology capabilities which extend into areas of high energy physics and related applications. Part of IGC’s exhibit will feature permanent magnet technology products which are now available through IGC’s recently acquired Field Effects., Inc., subsidiary, located in Acton. Massachusetts. The IGC exhibit will also feature

532

Cryogenics

1987

Leading the Field in Applied Superconductivity l

hlultifilament;~ry NbTi C’oncluctors

l

l

MRI

l

l

Magnet Systems (IL35 T IO :- ?.(I T)

hlultifilatllctltarv

NI,.)Sn C‘ontluctcxs

~lrlltilil;lmcrltnr~ Nb\Sn Research hfqnets (up to 10.0 T)

Rescnrch into kligh-Tcmpcraturc Supcrcwductors

And Now Offering Advanced Products and Systems to Expand the Range of Devices and Applications Cryogenic Refrigerators: l

Open and Closed Cycle

Detector coolers, crypumpc, superconductive magnet environment coolers and rewndcnscrs for complctc climinalion of tie losses)

(both shield

Permanent Magnets l

A full rnnpc of dipole wd qudrupolc unique, low-cost pcwnctry

mapncts and n new offering for hlRl

with a

tcdinol~g~

NhlR Research Systems for Spectroscop~/lmaging l

Modular

in design and opcrntinp up to 5.0 T

MAGSTREAMTbl Separators: l

For mincralq and pow&r analysts

A Major Technology Breakthrough

prowssing.

INTERXIAGNETICS P.O. Bnx St%

Vol 27 September

Guildcrland. \I’

13lR-l (l-X\)

rccyclinp, quality control. and laboratory

GENERAL ILS.

CORPORATION 67tt?os

-r-El.: (SIRJ56-S-856) FAX: (5 tEL456-GflZfl)

TRANSITION

iEq

Exhibition

preview

COUPLINGS

g --~f %_ -@=y!=J?-- =- .> 5 for

CRYOGENIC HEAT

HIGH VACUUM TRANSFER l

bonded

Metallurgically

to:

Ferrous Metals

4 RAILROAD

AVENUE,

GLEN

(516)

HEAD,

NEW

YORK

11545

671~4822

NOW A PRODUCT OF new multifilamentary Nb_,Sn high field research magnets designed to operate at field strengths up to 16.0 T. These magnet offerings are part of IGC’s commitment to stay at the forefront of superconductive magnet and materials technology, and at the same time, expand the company’s magnet range to include permanent magnet technology capability. (lntermagnetics General Corporation, PO Box 566, Guildcrland, NY 12084, USA).

ALTEC

Bi-Braze

BI - Braze” manufactures metallurglcally bonded transitions consistIng of cylindrical sections of wrought aluminium and stainless steel bonded together to form vacuum/pressure tight couplings, the ends of which arc welded to slniilar metals in systems operating at cryogenic temperatures as low as 1.5 K and high vacuum/elevated pressures. Bi-Braze” bi-metallic transitlons will withstand thermal shock, bake-out and years of ther-

ALTEC

INTERNATIONAL, INC Lacrosse,

mal cycling to supercritical helium temperatures. Bi-Braze” transitions arc used in scientific, industrial, aerospace, cryogenic and vacuum equipment for air separation, LNG Ilquefactlon, superconduction, infrared and other systems requiring vaccum tight joints between dissimilar metals capable of operation at temperatures approaching absolute zero. Bi-Braze” was recently acquired by ALTEC International, Inc. of La Crosse, Wisconsin, a world leader in the design and manufacture of

Wisconsin

large brazed aluminium plate-fin heat exchangers for cryogenic applications. ALTEC and Bi- Braze” will be co-hosting the Bi-Braze” stand at EXPO MT 10, featuring the full Bi-Braze” line of standard pipe, tubular and special configuration transitions used in a wide variety of cryogenic and vacuum applications. These exhibits include aluminium to stainless steel, aluminium to titanium and titanium to stainless steel transition pieces.(BiBraze Corporation, 4 Railroad Avenue, Glen Head, NY 11545, USA)

Cryogenics

1987

Vol 27 September

533

gg

Tenth International Conference on Magntzt Technology Boston. hlaswchusetts. USA 21-25 StqXendw- 19S7

Exhibition Cryogenic

preview:

(Cryogenic

Consultants

Limited)

Cryogenic is one of the major European companies specializing in applications of superconductivity. Represented by their New York subsidiary, CCL Systems, the company will be displaying a range of with new products toget her examples of their custom designed superconducting magnet systems. The PS12OC computer interfaced magnet controller will be introduced at MT 10. Much more than simply a power supply, the PS12OC is the first fully interactive control system for all aspects of superconducting magnet operation at the highest level of flexibility and sophistication. All functions, including ramp rate, set current, persistent mode switch operation, magnet voltage limit and set points are all accessible via RS232 or IEEE interfaces. The controller can be configured to display either current or field (Tesla). Incorporating a high quality ultra stable current source, the PS12OC is suitable for energizing and controlling all superconducting magnets. Another new product from Cryogenic is the T450 temperature sensor, a 450 R (at room temperature) sensor. rhodium iron resistance The increased sensitivity of the sensor as compared with existing 27 0 sensors make the new device ideal for most applications throughout the cryogenic temperature range. It is particularly appropriate for multisensor instrumentation of larger Superconducting magnet and refrigerated systems. The T450 is a thin film on sapphire chip which is extremely rugged and stable and may

534

Cryogenics

1987

EXPO

MT-l

0

be operated with a range of temerature indicators and controllers available from Cryogenic. High T, superconductivity has created a need for more sensitive and higher field SQUID susceptometers. In response to this need. Cryogenic arc offering two new instruments, the S600 and the SlOO. Both instruments offer controlled 1.8 320 K sample tempcratures and incorporate their reliable and sensitive thin film SQUID scnsor type SOS5 The S600 is available as a fully automated standard 0 5T system, or higher fields, to 8 or 12 T. can be provided as an option. It is the ideal system for flux pinning experiments on high T, superconductors and it can also be configured for short sample measurements on the same materials. The SIOO susceptomcter is optimized for ultimate sensitivity at lower fields and is the perfect instrument for susceptibility studies on small samples. Superconducting magnets are of course the main product of this innovative company, and several examples of their achievements in this area will be presented photographically at the Cryogenic MT 10 stand. These include: high field solenoids 11 17 T, 5 10 T split pair magnets, NMR magnets for up to 600 MHz, closed cycle refrigerated magnets for mineral separation and nuclear physics applications, and research magnets combing high fields and 0.3 K temperatures from their range of helium 3 inserts. For information on Cryogenic’s standard products and custom SUperconducting magnets, contact their engineering staff at the London factory, telephone (01) 743

Vol 27 September

PSl 2oc

rrlilgflct Corllrollw

from

Cryogoruc

6049. In the US and Canada, contact CCL Systems, New York, telcphone (914) 986 4090. (Cryogenic (Cryogenic Consultants Limited), Metrostore Building, 231 The Vale, London W3 7Q3, UK)

Magnet Measuring Workshop (MMW

5)

A Magnet Measuring Workshop will be held at Brookhaven National Laboratory (BNL) from 28 to 30 September, immediately following MT 10. Many of those attending MT 10 are expected to also come to the workshop. This workshop will be the fifth in the series of informal meetings for the exchange of information about new activities and experience in the area of magnetic field measurements. As with previous workshops, arrangements are as informal as possible. A detailed agenda will be arranged at the opening session and there will be no written proceedings. A preliminary agenda is shown here, based on material discussed at previous workshops and

Exhibition

preview:

on items known to be of interest to those who are involved in mcasuring superconducting magnets for accelerators. AddItional suggestlons for the agenda can be made prior to or at the time of the workshop

Preliminary

agenda

Monday, 28 September: Welcome, arrangement of dctailcd agerid;l Rcv~cw of SSC workshop on mog rictic measurements

Other

exhibitors

As well as those companies detailed on the previous pages the following organlzatlons will he taking part in the exhibition (correct as known on 2 July 1987): Alsthom 3, avenue des 3 chenes, Belfort Cedex, France

90018

Ansaldo Componenti SpA Via Pacinotti 20, 16151 Geneva. Italy BBC Brown Boven, Inc. Werk Oerllkon, Postfach CH -8950 Zurich, Switzerland Babcock & WIICOX Naval Nuclear Fuel Box 785, Lynchburg, USA F. W. Bell, Inc. 6120 Hanging Orlando, FL 32807, Bruker Instruments. Manning Park, MA 01821, USA

8242,

Division, PO VA 24505.

Moss USA Inc. Blllerica.

Road,

EXPO

MT-I

0

Existing, new and planned measuring equipment (for example, rotating coil for SSC. RHIC, HERA dlpolcs) Tuesday, 29 September: New measuring techniques (for example, harmonic measurements with a multi-clement NMR device) Magnetic field sensors (of special interest, dipole angle with respect to gravity) Tour of BNL Magnet Facilltlcs Wednesday,

Measurement

30 September:

Brush Wellman 17876 St Clair Avenue, OH 44110, USA

Cleveland,

Delco- Remy Division of General Motors, 2401 Columbus Avenue, PO Box 2439, PLT 18 109. Anderson, IN 46018. 9986, USA

For further information, contact P. Wanderer at BNL. (Brookhaven National Laboratory, Associated Universities, Inc., Bldg 902B. Upton, N7 11973, USA)

Meyer Tool & Manufacturing 9221 S. Kilpatrick Avenue, Oak Lawn, IL 60453, USA

Outokumpu Metals USA Six Park Lane Blvd, Suite Dearborn, Ml 48126, USA

Inc.

420,

Scanditronix, Inc. 106 Western Avenue, PO Box 987, Essex, MA 01929, USA

Eriez Magnetics Ashury Road at Airport Erie, PA 16514, USA

Sentec S.A. 31 Avenue Ernest Pictet, Geneva 13. Switzerland

GA Technologies, Inc. Inc. PO Box 85608, San Diego, CA 92138, USA General Dynamics Space Systems MZ-92-7100, PO Box 85990, San Diego, CA 92138, USA IMI Titanium Limited PO Box 704, Witton, B6 7UR. UK

Electronic aids for magnetic field ADC, measurement (position, DVM. integrators) Computer control, etc. (of particular interest, data bases) Standardization and interlahoratory comparison (BNL/DESY/ Fermilah ‘LBL Intercomparison on SSC HERA dipoles)

Birmingham

L?dI La Metalli lndustriale Borgo Pinti, 99, 50121 Italy

Spa Flrenze.

1211

Shin-Etsu Chemical Co., Limited 611 West 6th Street, Suite 2710, Los Angeles, CA 90017, USA Walker Scientific, Inc. 10 Rockdale Street, MA 01606, USA

Worcester,

Wang NMR 7074A Commerce Circle, Pleasanton, CA 94566, USA

Cryogenics

1987

Vol 27 September

535