- Email: [email protected]
Exhibition preview
EXHIBITION
prevmw Intermagnetics General The recent activities of the company are outlined to demonstrate the types of projects they are happy to handle. Every US Government sponsored p r o g r a m m e for fusion research, magnetohydrodynamics, high energy physics and isotope separation has been supplied with the company's NbTi superconductive wire. Currently the IGM team are involved in supplying wire for large scale superconducting magnets for the mirror fusion test facility at Lawrence Livermore National Laboratory and Isobelle at Brookhaven National Laboratory. Other a c t i v i t i e s include contributions to power transmission, propulsion systems, materials separation, energy storage and NMR.
the company will be available to discuss applications and to offer technical assistance. (Janis Research, 22 Spencer Street, Stonham, Massachusetts 02180. USA) Lakeshore Cryotronics Lakeshore's latest resistancethermometer/temperature controller will be introduced at this exhibition. The unit is designed for use with platinum, germanium or carbon glass sensors. Other items on display include: silicon diodes, calibrated or uncalibrated, for use at 1.4 K to 3.80 K; germanium, with a repeatability better than 0.5 mK and resistances from 50 to 2500~ ; carbon glass which is monotonic between 1-300 K. and exhibits an extremely low and
predictable magnetic field dependence; and a complete line of gallium-arsenide diodes, platinum and rhodium-iron RTD's, capacitance sensors and a standards lab for calibrations between 0.5 - - 380 K. Also of interest are the DRC - 80 thermometer, the DRC80C therm o m e t e r c o n t r o l l e r and the DRC84C DRC-80 uses silicon diode sensors in standard or custom c u r v e configurations. It has dual sensor input, 0.1 K resolution, optional 1EEE or BCD interface and is easy to operate. DRC80C thermometer/controller adds digitally directed analog heater control to the 80. The diode sensors are interchangeable, optional ten sensor input is available and gain and reset are adjustable on the front panel or through interfaces.
The company are now applying their skills and experience to NMR whole body imaging. IGC has recently designed and manufactured niobium-titanium wire that is an important component in NMR magnets and other company's see NMR imaging as a major market opportunity. The firm is now building 1.5 T and 0.5 T whole body imaging magnets as well as a 3 T 0.25 m bore model for animal imaging research. Two models are in use for imaging and spectroscopy of hydrogen-I, phosphorus-31 and sodium-23, the first to be delivered in the latter half of 1982. (Intermagnetics General Corporation, PO Box 566, Guilderland, New York, 12084, USA) Janis Research A range of supervaritemp cryostats will be on view at the Janis display. The equipment includes superconducting magnet cryostats and related equipment. Personnel from
CRYOGEN ICS . DECEMBER 1982
Silicon diode sensorscomprising the DT500seriesfrom LakeshoreCryotronics
675
HleiTION preview DRC-84C covers 1.4 - - 8 0 0 K, by adding platinum RTD capability to the DRC80C. Set point display can be read directly in Kelvin or Celsius. (Lakeshore Cryotronics Inc., 64 East Walnut Street, Westerville, Ohio 43081, USA)
American Magnetics Model magnets and instruments along with pictures will be shown at this display to outline the company's major activities. AMI design and construct superconducting magnets, magnet systems, helium vapour cooled current leads, linear helium level sensors and other useful instruments. The company specializes in the design of pocket size to room size magnets and standard solenoids for a number of applications including NMR, Mossbauer, magnetization, magnetooptical spin flip polarization, nuclear demagnetization, superconducting motors, plasma physics, fusion, Faraday rotators, bubble chambers and energy storage.
The selection guide for superconducting magnets, magnet systems and cryogenic accessories will also be on view. (American Magnetics Inc., PO Box 2561, Oak Ridge, Tennesse 37830, USA) Oxford Airco The Oxford Airco Showcase illustrates the new association between Airco Superconductors and Oxford Instruments group. Both superconducting materials and NMR imaging magnets, which are the principle activity of the New Jersey operation are shown. The NMR imaging magnets, which are for medical applications, are primarily superconducting although the exhibits show resistive imaging magnets, which are also made by the Oxford Instruments Group. The Oxford Airco booth is located adjacent to the Oxford Instruments, North America booth which illustrates the other product lines made in the United Kingdom. Supercon-
An NMR imaging magnet for medical applications from Oxford Airco
ducting materials which have been the typical products of Airco Superconductors are displayed. These include multifilamentary niobium t i t a n i u m and m u l t i f i l a m e n t a r y niobium tin wires. New conductors designed especially for NMR applications are also shown. In addition to the small wires, a considerable amount of the display is devoted to large conductors made by cabling, braiding, and wrapping techniques for large coil applications primarily used in fusion and high energy physics. (Oxford Airco, 600 Milik Street, Carteret, New Jersey 07008, USA)
Teledyne Wah Chang Columbian titanium superconducting alloys and the MJR process for niobium 3 tin superconductors will be featured at this display.
Putting the finishing touches to an American Magnetics supemonducting magnet
676
A series of colour photographs will illustrate the various processes in the manufacture of CbTi (forge, extrusion, swage and drawing operations). The alloy is produced and supplied from billets to preci-
CRYOGEN ICS. DECEMBER 1982
IEXHIBITION
est is the LR 400 four wire, autobalance ac resistance bridge with eight ranges from .02 to 200 K full scale. It has four and a half digit display with BCD output for a computer, and a 41/= digit set resistance for setting a reference temperature or expanded display reading about a fixed resistance. Both cryogenic and high temperature applications are covered using platinum, germanium, carbon and thermistor resistance sensors. Other equipment on view include a manual balance resistance bridge, temperature controllers and liquid nitrogen level sensors. (Linear Research Inc., 5231 Cushman Place, Suite 21, San Diego, CA 92110, USA) Columbian alloy rod ready for shipment
sion ground rod for use by superconductor cable manufacturers. The M JR (Mcdonald Jelly Roll) display comprises a series of mounts at various stages of niobium 3 tin M JR process. These metallographic mounts are highly polished enabling the viewer to identify the intricacy of the process. (Teledyne Wah Chang, PO Box 460, Albany, Oregon 97321,
USA)
General Dynamics Superconducting magnet systems, design, test and manufacture is the theme of this display. Complete magnets and magnet construction will be illustrated by a series of photographs. Of particular interest at this showcase is the TV cassette s h o w i n g fabrication, w i n d i n g assembly and shipping of four different types of magnet and a preprototype magnet produced by the company over the last years. The four magnets featured are: large coil
CRYOGENICS . DECEMBER 1982
Thor Research Corporation programme magnet, elmo bumpy torus magnet, a cell and solenoids for the mirror fusion test facility. (General Dynamics, Convair Division, PO Box 80847, San Diego, California 92138, USA)
Photographs and hardware demonstrate the company s actavlt.es in the design and manufacture of a range of cryostats and superconducting magnet systems. Complimenting this equipment is an electronic instrument package for temperature ,
~
.
.
.
Spaulding Fibre Co Highlighted at this showcase is the company's materials and fabrication capabilities. The materials are designed for use in corrosive or high radiation environments. Of particular interest is Grade G10CR and 11CR which is shown in a variety of applications. (Spaulding Fibre Company Inc., 1 American Drive, Buffalo New York 14225, USA)
Linear research A range of useful measurement and control equipment will be on display at this showcase. Of particular inter-
Assembling a magnet system at Thor Research Corporation
677
Ip'"v'"wl indication and control, cryogenic level indication and control and superconducting magnet power supplies.
per conductors; standard types of magnet wire; strands and cables; and flat end tubular braids. Most of the manufacturing processes are shown in a picture display and narrated slide presentation. (New England Electric Wire, 365 Main Street, Lisbon, New Hampshire 03585, USA)
In addition, Thor will display the CRYOCAL cryogenic thermometer and instrumentation range including Germanium, Silicon, Carbon and Platinum temperature sensors, the new CS 1000B constant current source, and the T 2000 'computer age' precision cryogenic temperature controller. The T 2000 will be demonstrated under mini-computer control using the IEEE-488 interface. Also featured is the new T 1500 cryogen ic tem perature indicator which has been introduced to satisfy a growing demand in both research and industrial applications. (Thor Research Corporation, PO Box 475 Pinole CA 94564, USA)
Vacuumschmelze Two types of material and wire will be shown by Vacuumschmelze: Vacryflux 5001 and Vacryflux NS. Vacryflux 5001 is a NbTi based alloy SC material which is available as single core wire and as multifilamentary conductors in a variety of types and dimensions. Vacryflux NS is a Nb3Sn based compound SC material available as all bronze multifilament conductor and as copper-tantalum stabilized SC wire. The company claim that the special features of the material are its e x a c t l y defined r e p r o d u c i b l e physical properties and excellent mechanical and electrical properties. VAC are participating in the EURATOM contribution for the LCT-project by developing and producing a special superconductor for one of the six magnets. The project
678
SHE Corporation
Section showingthe construction of Vacryflux 5001 usedin the LargeCoil Task requires approximately 20 tonnes of this forced flow cooled conductor consisting of 23 rectangular multifilament superconductors, around a steel core and a leak tight conduit. The current carrying capacity is 15 K A at 8 T and 4.2 K. (Vacuumschmelze Gmbh, Postfach 109, D6450, Hanau I, West Germany)
New
England Electric W i r e
Company To illustrate the variety of products available from this company a range of superconducting cable designs will be exhibited. Samples include round, square, rectangular and keystone shapes employing various numbers and sizes of single end superconductors. Different types of wrappings of textiles or tapes, textile braids and most thermo plastic and rubber extrusions will also be shown. Another section of the display covers the company's general product line, including samples of bare, tinned, nickel and silver plated cop-
A new model DCP dc SQUID system will be the main attraction at this display. The system features 'device-A' thin film double junction SQUID sensor that offers the user 100 times reduction in energy noise, compared to previously available SQUID systems. Operating in a flux locked-loop mode over a wide range of operating points, it has a dynamic range in excess of 160 dB. The control electronics are easy to operate and use a computer interface. The model DCP is the first in a series of dc SQUID systems. It supplements model 300 series SQUID systems which have served as the industw standard for several years. In a wide variety of applications ranging from determination of superconducting properties to the search for magnetic monopoles. In addition, new product information will be available on the series 500 dilution refrigerator inserts. The units use sintered silver heat exchange technology. Also of interest is the series 900 variable temperature superconducting susceptometer/magnetometer. Allowing completely automated operation, the series 900 is capable of measuring magnetic samples to 10 ( - 8 ) EMU at any temperature between 2 K and 400 K and fields up to 5 Tesla. (SHE Corporation, 4174 Sorrento Valley Blvd., San Diego, CA 92121, USA)
CRYOG EN ICS. DECEMBE R 1982
prevmw Intermagnetics General The recent activities of the company are outlined to demonstrate the types of projects they are happy to handle. Every US Government sponsored p r o g r a m m e for fusion research, magnetohydrodynamics, high energy physics and isotope separation has been supplied with the company's NbTi superconductive wire. Currently the IGM team are involved in supplying wire for large scale superconducting magnets for the mirror fusion test facility at Lawrence Livermore National Laboratory and Isobelle at Brookhaven National Laboratory. Other a c t i v i t i e s include contributions to power transmission, propulsion systems, materials separation, energy storage and NMR.
the company will be available to discuss applications and to offer technical assistance. (Janis Research, 22 Spencer Street, Stonham, Massachusetts 02180. USA) Lakeshore Cryotronics Lakeshore's latest resistancethermometer/temperature controller will be introduced at this exhibition. The unit is designed for use with platinum, germanium or carbon glass sensors. Other items on display include: silicon diodes, calibrated or uncalibrated, for use at 1.4 K to 3.80 K; germanium, with a repeatability better than 0.5 mK and resistances from 50 to 2500~ ; carbon glass which is monotonic between 1-300 K. and exhibits an extremely low and
predictable magnetic field dependence; and a complete line of gallium-arsenide diodes, platinum and rhodium-iron RTD's, capacitance sensors and a standards lab for calibrations between 0.5 - - 380 K. Also of interest are the DRC - 80 thermometer, the DRC80C therm o m e t e r c o n t r o l l e r and the DRC84C DRC-80 uses silicon diode sensors in standard or custom c u r v e configurations. It has dual sensor input, 0.1 K resolution, optional 1EEE or BCD interface and is easy to operate. DRC80C thermometer/controller adds digitally directed analog heater control to the 80. The diode sensors are interchangeable, optional ten sensor input is available and gain and reset are adjustable on the front panel or through interfaces.
The company are now applying their skills and experience to NMR whole body imaging. IGC has recently designed and manufactured niobium-titanium wire that is an important component in NMR magnets and other company's see NMR imaging as a major market opportunity. The firm is now building 1.5 T and 0.5 T whole body imaging magnets as well as a 3 T 0.25 m bore model for animal imaging research. Two models are in use for imaging and spectroscopy of hydrogen-I, phosphorus-31 and sodium-23, the first to be delivered in the latter half of 1982. (Intermagnetics General Corporation, PO Box 566, Guilderland, New York, 12084, USA) Janis Research A range of supervaritemp cryostats will be on view at the Janis display. The equipment includes superconducting magnet cryostats and related equipment. Personnel from
CRYOGEN ICS . DECEMBER 1982
Silicon diode sensorscomprising the DT500seriesfrom LakeshoreCryotronics
675
HleiTION preview DRC-84C covers 1.4 - - 8 0 0 K, by adding platinum RTD capability to the DRC80C. Set point display can be read directly in Kelvin or Celsius. (Lakeshore Cryotronics Inc., 64 East Walnut Street, Westerville, Ohio 43081, USA)
American Magnetics Model magnets and instruments along with pictures will be shown at this display to outline the company's major activities. AMI design and construct superconducting magnets, magnet systems, helium vapour cooled current leads, linear helium level sensors and other useful instruments. The company specializes in the design of pocket size to room size magnets and standard solenoids for a number of applications including NMR, Mossbauer, magnetization, magnetooptical spin flip polarization, nuclear demagnetization, superconducting motors, plasma physics, fusion, Faraday rotators, bubble chambers and energy storage.
The selection guide for superconducting magnets, magnet systems and cryogenic accessories will also be on view. (American Magnetics Inc., PO Box 2561, Oak Ridge, Tennesse 37830, USA) Oxford Airco The Oxford Airco Showcase illustrates the new association between Airco Superconductors and Oxford Instruments group. Both superconducting materials and NMR imaging magnets, which are the principle activity of the New Jersey operation are shown. The NMR imaging magnets, which are for medical applications, are primarily superconducting although the exhibits show resistive imaging magnets, which are also made by the Oxford Instruments Group. The Oxford Airco booth is located adjacent to the Oxford Instruments, North America booth which illustrates the other product lines made in the United Kingdom. Supercon-
An NMR imaging magnet for medical applications from Oxford Airco
ducting materials which have been the typical products of Airco Superconductors are displayed. These include multifilamentary niobium t i t a n i u m and m u l t i f i l a m e n t a r y niobium tin wires. New conductors designed especially for NMR applications are also shown. In addition to the small wires, a considerable amount of the display is devoted to large conductors made by cabling, braiding, and wrapping techniques for large coil applications primarily used in fusion and high energy physics. (Oxford Airco, 600 Milik Street, Carteret, New Jersey 07008, USA)
Teledyne Wah Chang Columbian titanium superconducting alloys and the MJR process for niobium 3 tin superconductors will be featured at this display.
Putting the finishing touches to an American Magnetics supemonducting magnet
676
A series of colour photographs will illustrate the various processes in the manufacture of CbTi (forge, extrusion, swage and drawing operations). The alloy is produced and supplied from billets to preci-
CRYOGEN ICS. DECEMBER 1982
IEXHIBITION
est is the LR 400 four wire, autobalance ac resistance bridge with eight ranges from .02 to 200 K full scale. It has four and a half digit display with BCD output for a computer, and a 41/= digit set resistance for setting a reference temperature or expanded display reading about a fixed resistance. Both cryogenic and high temperature applications are covered using platinum, germanium, carbon and thermistor resistance sensors. Other equipment on view include a manual balance resistance bridge, temperature controllers and liquid nitrogen level sensors. (Linear Research Inc., 5231 Cushman Place, Suite 21, San Diego, CA 92110, USA) Columbian alloy rod ready for shipment
sion ground rod for use by superconductor cable manufacturers. The M JR (Mcdonald Jelly Roll) display comprises a series of mounts at various stages of niobium 3 tin M JR process. These metallographic mounts are highly polished enabling the viewer to identify the intricacy of the process. (Teledyne Wah Chang, PO Box 460, Albany, Oregon 97321,
USA)
General Dynamics Superconducting magnet systems, design, test and manufacture is the theme of this display. Complete magnets and magnet construction will be illustrated by a series of photographs. Of particular interest at this showcase is the TV cassette s h o w i n g fabrication, w i n d i n g assembly and shipping of four different types of magnet and a preprototype magnet produced by the company over the last years. The four magnets featured are: large coil
CRYOGENICS . DECEMBER 1982
Thor Research Corporation programme magnet, elmo bumpy torus magnet, a cell and solenoids for the mirror fusion test facility. (General Dynamics, Convair Division, PO Box 80847, San Diego, California 92138, USA)
Photographs and hardware demonstrate the company s actavlt.es in the design and manufacture of a range of cryostats and superconducting magnet systems. Complimenting this equipment is an electronic instrument package for temperature ,
~
.
.
.
Spaulding Fibre Co Highlighted at this showcase is the company's materials and fabrication capabilities. The materials are designed for use in corrosive or high radiation environments. Of particular interest is Grade G10CR and 11CR which is shown in a variety of applications. (Spaulding Fibre Company Inc., 1 American Drive, Buffalo New York 14225, USA)
Linear research A range of useful measurement and control equipment will be on display at this showcase. Of particular inter-
Assembling a magnet system at Thor Research Corporation
677
Ip'"v'"wl indication and control, cryogenic level indication and control and superconducting magnet power supplies.
per conductors; standard types of magnet wire; strands and cables; and flat end tubular braids. Most of the manufacturing processes are shown in a picture display and narrated slide presentation. (New England Electric Wire, 365 Main Street, Lisbon, New Hampshire 03585, USA)
In addition, Thor will display the CRYOCAL cryogenic thermometer and instrumentation range including Germanium, Silicon, Carbon and Platinum temperature sensors, the new CS 1000B constant current source, and the T 2000 'computer age' precision cryogenic temperature controller. The T 2000 will be demonstrated under mini-computer control using the IEEE-488 interface. Also featured is the new T 1500 cryogen ic tem perature indicator which has been introduced to satisfy a growing demand in both research and industrial applications. (Thor Research Corporation, PO Box 475 Pinole CA 94564, USA)
Vacuumschmelze Two types of material and wire will be shown by Vacuumschmelze: Vacryflux 5001 and Vacryflux NS. Vacryflux 5001 is a NbTi based alloy SC material which is available as single core wire and as multifilamentary conductors in a variety of types and dimensions. Vacryflux NS is a Nb3Sn based compound SC material available as all bronze multifilament conductor and as copper-tantalum stabilized SC wire. The company claim that the special features of the material are its e x a c t l y defined r e p r o d u c i b l e physical properties and excellent mechanical and electrical properties. VAC are participating in the EURATOM contribution for the LCT-project by developing and producing a special superconductor for one of the six magnets. The project
678
SHE Corporation
Section showingthe construction of Vacryflux 5001 usedin the LargeCoil Task requires approximately 20 tonnes of this forced flow cooled conductor consisting of 23 rectangular multifilament superconductors, around a steel core and a leak tight conduit. The current carrying capacity is 15 K A at 8 T and 4.2 K. (Vacuumschmelze Gmbh, Postfach 109, D6450, Hanau I, West Germany)
New
England Electric W i r e
Company To illustrate the variety of products available from this company a range of superconducting cable designs will be exhibited. Samples include round, square, rectangular and keystone shapes employing various numbers and sizes of single end superconductors. Different types of wrappings of textiles or tapes, textile braids and most thermo plastic and rubber extrusions will also be shown. Another section of the display covers the company's general product line, including samples of bare, tinned, nickel and silver plated cop-
A new model DCP dc SQUID system will be the main attraction at this display. The system features 'device-A' thin film double junction SQUID sensor that offers the user 100 times reduction in energy noise, compared to previously available SQUID systems. Operating in a flux locked-loop mode over a wide range of operating points, it has a dynamic range in excess of 160 dB. The control electronics are easy to operate and use a computer interface. The model DCP is the first in a series of dc SQUID systems. It supplements model 300 series SQUID systems which have served as the industw standard for several years. In a wide variety of applications ranging from determination of superconducting properties to the search for magnetic monopoles. In addition, new product information will be available on the series 500 dilution refrigerator inserts. The units use sintered silver heat exchange technology. Also of interest is the series 900 variable temperature superconducting susceptometer/magnetometer. Allowing completely automated operation, the series 900 is capable of measuring magnetic samples to 10 ( - 8 ) EMU at any temperature between 2 K and 400 K and fields up to 5 Tesla. (SHE Corporation, 4174 Sorrento Valley Blvd., San Diego, CA 92121, USA)
CRYOG EN ICS. DECEMBE R 1982