2T Projected Field HTS Magnet - GMW · 2T Projected Field HTS Magnet ... (at 1mm above the top...

TECHNICAL INFORMATION

2T Projected Field HTS Magnet

Author: Dr. Taotao Huang Document Ref: PVF2T001

Email: [email protected] Initial Issue Date: 19/06/2014

© HTS-110 Limited of 17

Document #: HTS019 Review: November 2014 Owner: OM

Contents

1 Project Description ............................................................................ 3 1.1 Magnet ...................................................................................... 3 1.2 Specification ............................................................................... 3 1.3 Magnet Layout & Performance .......................................................... 4

1.3.1 Magnetic ............................................................................... 4 1.3.2 Fringe Field ........................................................................... 5

1.4 Power Supply ............................................................................... 6 1.5 Cryocooler .................................................................................. 6 1.6 Magnet Field Control Software .......................................................... 6 1.7 Magnet System Supervisor ............................................................... 7 1.8 Yoke ......................................................................................... 7

2 Infrastructure requirements (expected).................................................... 8 3 Pre-delivery Tests .............................................................................. 9 4 Project Timeline ............................................................................. 10 5 Technical Information ....................................................................... 11

5.1 Magnet System Supervisor (MSS) ...................................................... 11 5.2 Key MSS Interfaces ...................................................................... 11 5.3 Power Supply Data Sheet ............................................................... 12 5.4 Cryocooler Data Sheet .................................................................. 13 5.5 Key Magnet Interfaces .................................................................. 14 5.6 Key Compressor Interfaces ............................................................. 14 5.7 Outline drawing .......................................................................... 15

6 Terms and Conditions of sale .............................................................. 16

Please Note

All designs and/or information embodied in this document are copyright © of HTS-110 and shall not be provided to third parties. Designs and information may be based on techniques protected by patents owned, be subject of patent applications by HTS-110, or be subject to other forms of Intellectual Property protection. Use of these designs or information by the recipient (or other parties associated or not associated with the recipient) is subject to agreement of licensing and/or other commercial arrangements between said parties and HTS-110. Where fees have been paid (or other considerations made) by recipient for a design study, preparation of samples, testing of samples or other work by HTS-110 personnel, acceptance of such payments by HTS-110 does not confer title or any rights to use designs and/or information embodied herein or otherwise supplied by HTS-110.



1 Project Description

1.1 Magnet

This HTS magnet system is designed to generate a maximum 2.6T field at 1mm above the top surface of the magnet and a maximum 2.3T field at 5mm above the top surface of the magnet.

The system is cryogen-free and cooled by means of a cryocooler and an associated compressor. The system will be provided with KEPCO power supply which will allow the field to be set at any desired level or ramped continuously as required. The power supply is provided with interfaces which allow it to be operated via digital communications from a PC, or via an analogue input voltage.

1.2 Specification

Description Value

Peak Field (at 1mm above the top surface of the magnet) 2.6T

Peak Field (at 5mm above the top surface of the magnet) 2.3T

Field homogeneity over Ø10mm area at 5mm above the top surface 0.5%

Maximum operating current (A) 200

Maximum ramp voltage (V) 1

Peak inductance (approx.) (H) ~0.2

Ramping time (min) 1

Cool-down time (hour) 20

Mass - magnet and cryocooler (kg) ~55

Mass – compressor (kg) 75



1.3 Magnet Layout & Performance

Figure 1 Magnet layout

1.3.1 Magnetic

The magnet will generate a maximum 2.6T field at 1mm above the top surface of the magnet and a maximum 2.3T field at 5mm above the top surface of the magnet. Figure 2 shows the magnetic field profile above the pole in the axial direction. Figure 3 shows the magnetic field profile at 5mm above the pole tip in the radial direction.

Figure 2 Field profile above the pole in the axial direction

Iron pole



Figure 3 Field profile at 5mm above the pole in the radial direction

1.3.2 Fringe Field

Figure 4 Fringe field

5 Gauss and 50 Gauss lines of the magnet are shown in Figure 4.



1.4 Power Supply

KEPCO BOP power supplies are normally used with HTS-110 magnets. These are 4-quadrant supplies offering smooth sweeps through a zero field (no switching). This magnet is driven by two KEPCO BOP 6-125MG units which are connected in parallel to provide up to 250 A @ 6V. The power supplies have communication interfaces for remote operation and are connected to the Magnet System Supervisor for safety shut-down.

1.5 Cryocooler

The magnet coils are kept at operating temperature using a cryocooler and associated compressor. Specifications of this cooler are included in the Technical Information Section.

1.6 Magnet Field Control Software

The relationship between field and current is determined when the magnet is tested at HTS-110. The power supply can be controlled from a PC on which the client can run its own programs to control the magnet field.



1.7 Magnet System Supervisor

All HTS-110 magnets are supplied with an in-house magnet system supervisor (MSS). The MSS monitors temperature at several points within each coil pack as well as voltage across the coils. Given the high thermal stability of HTS magnets, abnormal operating condition can be readily detected and acted on before a quench occurs. If a pre-quench condition is detected a shut-down command is sent to the power supply and the stored energy dumped through a resistor based dump circuit.

The dump circuit is sized to ensure complete energy dump within required time from the sequence trigger. Approximate decay time in case of dump is in the range 1-5 seconds.

1.8 Yoke

An aluminium cryostat integrated with returning yoke forms the mechanical chassis for the system. This outer yoke is manufactured from low carbon steel (AISI 1006) with a nickel coating for corrosion resistance.



2 Infrastructure requirements (expected)

For installation an oil-free vacuum pump (not supplied by HTS-110) is required. It is also recommended that a vacuum pump is available on site so that the magnet vacuum can be reconditioned from time to time.

Cryocooler & Compressor 220 VAC, 3 Phase, 50/60 Hertz – steady state consumption 3.7kW, water cooled

Cooling Water 5.7 – 9.5 litre per minute @ 21°C max

Magnet System Supervisor

220-240 VAC,50HZ, 1ph 3A (Max)

Magnet Power Supply 176-264 VAC, 47-63 Hz, 1ph, 9.5 A (Max)



3 Pre-delivery Tests

1. Vacuum integrity

2. Cool-down time

3. Static monitor tests

a. Disable signal correctly switches off the power supply

b. Power-supply disabled when voltage limits exceeded

c. Power-supply disabled when temperature limits exceeded

d. Power supply disabled if magnet monitor cable is removed/monitor switched off

4. High current monitor/dump-circuit test - Power supply disabled and magnet safely ramps

down

5. Fringe field - Radial and axial 5 gauss line

6. B vs I excitation curves for magnet

7. Field maps if required

8. Single non-linear cycle at fastest stable rate.

-Cycle time and maximum temperature excursion recorded.



4 Project Timeline

Delivery for magnets is usually 7-8 months from receipt of order. Detailed delivery information will be provided when the details of the intended contract have been determined.

Phase Elapsed time Outcome

1 Set system and testing requirements

2 weeks System requirements document created, reviewed and signed off by client and HTS-110

2 Magnetic design/analysis

3 weeks

Magnet defined from the magnetic standpoint, all 2D and 3D analysis completed, all analytical work completed

2.1 Review & Sign off

3 Mechanical design initial layout

3 weeks Outside system dimensions locked, all interface points locked


4 Detail design 5 weeks Set of assembly and detail drawings for the system produced


5 Manufacturing 8 weeks All components produced

6 Assembly 7 weeks The system is assembled and ready for testing

7 Testing 2 weeks Testing performed, the test report issued to client


8 Shipping (air) 2 weeks Client receives the system

9 Installation and commissioning

1 weeks

The system is installed and commissioned at client’s premises by HTS-110 staff

10 Installation report

The table above represents the main stages and review points in the project. The project schedule is based on estimated elapsed time for each project phase. Not all stages may be required in each project.



5 Technical Information

5.1 Magnet System Supervisor (MSS)

The Magnetic System Supervisor (MSS) is designed to monitor the conditions of the HTS magnet and automatically disable the power supply if the magnet begins to operate abnormally. The MSS can control the power supply attached to the magnet system via the auxiliary communication port using a standard RS-232 cable to create a fully autonomous system.

The MSS fits inside 19” Rack, it is 1U tall, 10” deep and weighs 3kg. The MSS requires 47/63Hz 100-240V, 0.4A max, single-phase power.

Features

Five dedicated temperature channels: for simultaneously measuring up to five cryogenic

temperature sensors.

Two dedicated voltage channels: for simultaneously measuring up to two fully

differential voltages.

PC communication output: for remote control/monitoring of the system via a computer.

Interlock relay output: for disabling the power supply in the event of a quench.

Aux relay output: for switched control output. (optional)

Status lamp: a multi-colour led for visual status update.

5.2 Key MSS Interfaces

Data line x <10’ (from magnet)

Safety interlock x <10’ (to power supply)

Data logging port (to PC) – usage optional

AC in



5.3 Power Supply Data Sheet

Detailed input characteristics:



5.4 Cryocooler Data Sheet



5.5 Key Magnet Interfaces

5.6 Key Compressor Interfaces

helium flex lines (to magnet)

cooling water lines

cold head motor cord (to magnet)

3 phase AC in

helium flex lines (to compressor)

cold head motor cord (to compressor)

2X5m magnet current leads (to power supply)

Data line x <10’ (to MSS)

Vacuum line (to vacuum pump –

not supplied)



5.7 Outline drawing



6 Terms and Conditions of sale

DEFINITIONS – In these Terms and Conditions of Sale,

“HTS-110” means HTS-110 Ltd and any parents or subsidiaries thereof;

“Buyer” means the person or company with whom this contract is made; and

“Products” means the products and services provided by HTS-110.

GENERAL – Stenographic and clerical errors are subject to correction. All orders or contracts are subject to acceptance by HTS-110 at its general office in 69 Gracefield Road, Lower Hutt, New Zealand, or the location identified with the corporate signature on the quotation, regardless if taken elsewhere by a salesperson or selling agent.

PAYMENT – Unless other terms are expressly agreed upon and noted in an HTS-110 invoice form. Buyer with approved credit as provided below shall pay the net purchase price of all goods shipped within thirty (30) days from date of delivery. Amounts past due are subject to a service charge of 1.5% per month or portion thereof.

CREDIT – Accounts are subject to credit approval by the HTS-110 Credit Department and HTS-110 may at any time decline to make any delivery or perform any work except on receipt of payment in cash or upon security satisfactory to such department.

PRICES – The prices herein quoted are on the Products as specified and are subject to change without notice, with HTS-110’s right to bill at prices in effect at the time of shipment. If changes are made in specifications, delivery, or other quoted terms, HTS-110 reserves the right to adjust prices, if necessary to cover increased cost plus handling or service costs.

SUBSIDIARIES AND AFFILIATES – This contract may be performed, and all rights hereunder against Buyer may be enforced, in whole or in party, by HTS-110, its parent corporation or any one or more companies affiliated with HTS-110.

TAXES – Prices are exclusive of taxes, and all taxes arising hereunder are the responsibility of Buyer. Any taxes which HTS-110 may be required to pay or collect, under any existing or future law, upon or with respect to the sale, purchase, delivery, storage, processing, use or consumption of Products shall be for the account of Buyer, who shall promptly pay the amount thereof to HTS-110 upon demand.

DELIVERY – The terms and conditions of delivery shall be interpreted in accordance with INCOTERMS 2010 (International Commercial Terms) and its supplements published by the International Chamber of Commerce, unless otherwise specified in the HTS-110 quotation.

TITLE AND RISK –Products shall be delivered ex Works. Risk of loss shall pass when the Products are delivered ex Works to a common carrier. Title in the Product will pass when full payment relating to that Product is received by HTS-110.

IP RIGHTS – HTS-110’s transfer of title to Products shall not be construed to transfer to Buyer any intellectual property rights and, except that necessarily implied by law by the sale of the Products, shall not include a licence, for example, to any HTS-110 intellectual property rights directed to HTS wire, coils, leads, fault current limiters, superconducting magnetic energy storage systems, or rotating machinery.

CHANGES – Proposed changes in the specifications, quantities, method of shipment schedule or place of delivery of Products must be provided to HTS-110 in writing and may be accepted by HTS-110 in its sole discretion. Should such changes increase the cost or the time of performance, HTS-110 reserves the right for a period of thirty (30) calendar days from the acceptance of the change by HTS-110 to obtain an equitable price adjustment from the Buyer.

INSPECTION – If, upon delivery of Products covered hereby, such Products appear not to conform to this contract, Buyer shall notify HTS-110 of such conditions in writing within thirty (30) calendar days from receipt thereof and afford HTS-110 a reasonable opportunity to inspect the goods. No goods shall be returned without HTS-110’s consent.

LIMITED WARRANTY – HTS-110 warrants that Products sold by HTS-110 are free from defects in material and workmanship under normal use and service for a period twelve (12) months from the date of delivery. HTS-110’s sole obligation and Buyer’s exclusive remedy under this warranty shall be for HTS-110, as its sole choice, to repair or replace Products proven to be defective within the stated warranty period, or to accept a return of the Products and provide a refund of amounts paid to HTS-110 for the returned Products. Repair or



replacement of parts under this warranty shall be done on an ex Works, HTS-110 factory basis. Title and risk of loss or damage of Products replaced under warranty passes to Buyer in accordance with the terms above or such other terms as agreed between HTS-110 and Buyer. If HTS-110 determines that Products for which Buyer has requested warranty service are not eligible for warranty service for any reason, Buyer shall pay or reimburse HTS-110 for all costs of investigating and responding to such request at HTS-110’s then prevailing time and materials rates. The warranty for any required or replaced Products shall be the balance of the 12-month warranty period.

Exclusions from Warranty – This warranty shall not apply to: Products that have been repaired or altered other than by HTS-110 in any way so as, in HTS-110’s judgement, to affect the reliability; Products that have been subject to misuse, negligence, or accident, or operated manual instructions and/or recommendations have not been followed; material defects caused by normal wear; or any item that is experimental, developmental or supplied for evaluation purposes.

The foregoing limited warranty is exclusive and in lieu of all other warranties by HTS-110, expressed or implied, oral or written, including but not limited to any warranty of merchantability, fitness for a particular purpose or non-infringement.

FORCE MAJEURE – “Force Majeure” means causes beyond the reasonable control of HTS-110 or its suppliers or manufacturers, preventing or interfering with the delivery by HTS-110, including natural disaster, war (declared or undeclared), strikes, lockouts, fire, acts of terrorism, accidents, restraints affecting shipping or credit, non-arrival or delay of carriers, short or reduced supply of fuel or raw materials or excessive costs thereof, or of production, acts of any governmental authorities, or any other similar contingency affecting HTS-110 or its suppliers or manufacturers. Should Force Majeure prevent the total or partial performance under the order, the party claiming Force Majeure shall inform the other party substantiating the occurrence of and the nature of the contingency. HTS-110 is not liable for any default or delay caused by Force Majeure and may, at its option, deliver ratably with reference to all its customers or cancel any delivery not made.

CANCELLATION – Orders placed cannot be cancelled by Buyer, nor can delivery of Products completed or in process be deferred or extended beyond the original delivery date specified, except with HTS-110’s consent and upon terms which indemnify HTS-110 against loss.

INFORMATION – All information including, but not limited to, software, data, drawings, designs, specifications, photographs and sketches forwarded by HTS-110 to Buyer shall be treated as confidential by Buyer and shall be used by Buyer solely for the purpose for which it is furnished. Such information shall not be reproduced, transmitted, disclosed or used otherwise, in whole or in part, without written authorisation from HTS-110.

LIMITATIONS OF LIABILITY – The total liability of HTS-110 (including HTS-110 suppliers or manufacturers) on any claim, whether in contract, tort (including negligence), breach of warranty or otherwise, arising out of, connected with, or resulting from the manufacture, sale, storage, delivery, resale, repair, replacement or use of any Products shall not exceed the purchase order value. HTS-110’s liability on all such claims shall expire four (4) years after HTS-110’s delivery of the Products giving rise to the claim(s).

In no event shall HTS-110 (including HTS-110suppliers or manufacturers) be liable to buyer or any third party for any special, incidental, consequential, exemplary, or other indirect damages, or for loss of profits or revenues’, loss of use of the products or any associated product, cost of capital, claims of customers for service interruptions, and costs incurred in connection with procuring substitute goods.

GOVERNING LAW - This contract is governed by the laws of New Zealand.

2T Projected Field HTS Magnet - GMW · 2T Projected Field HTS Magnet ... (at 1mm above the top...

Documents

Transcript of 2T Projected Field HTS Magnet - GMW · 2T Projected Field HTS Magnet ... (at 1mm above the top...