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53

ZTKS0178 / Z31970 / Rev.: 03

Troubleshooting

6.3

Troubleshooting Work

6.3.1

After a Quench

Quench while in persistent mode:

1.

Wait until the quench valves are closed and no helium evaporates out of the quench
valves.

2.

Wait until there is no helium vapor visible in the room or the ceiling to make sure
there is sufficient oxygen in the room.

3.

If equipped with switch the Atmospheric Pressure Device OFF.

4.

Check the globes in the quench valves for their correct position.

5.

Only at magnet systems with 3 helium turrets: check the bursting disc at the helium
flow system. If destroyed close the socket with the supplied plug to prevent air from
entering the helium flow system or vessel.

6.

Remove probe and shim system to prevent icing of the shim system.

7.

Check the nitrogen turrets for icing.

8.

Start the refill with liquid helium as soon as possible after the quench (within one
hour after the quench; refer to the supplied Refilling Procedure).

9.

Contact Bruker Service immediately.

Figure 6.1:

Quench Picture

A quench is the very fast de-energizing of
the magnet by loss of its superconductivity.
The stored magnetic energy is converted
into heat, which promotes rapid evapora-
tion of large quantities of helium.
After an appearance of a quench contact
Bruker Service immediately.

WARNING

Cryogenic Agents

)

Quench

(see

)

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Содержание Ascend 750'89

Страница 1: ...Version Innovation with Integrity NMR Spectroscopy 750 89 Ascend 03 User Manual ...

Страница 2: ...demarks of their respective holders This manual was written by Peter van Bommel September 2012 Bruker Corporation Faellanden Switzerland ZTKS0178 Z31970 Rev 03 For further technical assistance on the NMR magnet system please do not hesitate to contact your nearest BRUKER dealer or contact us directly at BRUKER Corporation Industriestrasse 26 CH 8117 Faellanden Switzerland Phone 41 44 825 91 11 Fax...

Страница 3: ...3 ZTKS0178 Z31970 Rev 03 0 Contact 9 1 Introduction 11 2 Safety 13 3 Transportation 29 4 Assembling 35 5 Operation 37 6 Troubleshooting 39 7 Maintenance 55 8 Disassembling 57 A Appendix 59 ...

Страница 4: ...4 ZTKS0178 Z31970 Rev 03 ...

Страница 5: ...2 Intended Use 16 2 4 3 Safety Devices 17 2 4 4 Spare Parts 17 2 4 5 Signs and Labels 18 2 4 6 Technical Risks 18 2 5 Personal Protective Equipment 24 2 6 Description of Signs and Labels 25 2 7 Safety Devices 26 2 8 Behavior in Danger and Emergency Situations 28 2 9 Fire Department Notification 28 3 Transportation 29 3 1 Safety 29 3 2 Packaging 29 3 2 1 Disposal 30 3 3 Transport Inspection 30 3 4 ...

Страница 6: ...izing and Shimming 46 6 2 5 During Operation of the Magnet Stand 48 6 2 6 During Standard Operation 50 6 2 7 During De energizing and Warming up 52 6 3 Troubleshooting Work 53 6 3 1 After a Quench 53 7 Maintenance 55 7 1 Safety 55 7 2 Cleaning 56 7 3 Maintenance Timetable 56 8 Disassembling 57 8 1 Safety 57 A Appendix 59 A 1 Warning Signs 61 A 2 Figures 63 A 3 Tables 65 A 4 Glossary Abbreviations ...

Страница 7: ...7 ZTKS0178 Z31970 Rev 03 ...

Страница 8: ...8 ZTKS0178 Z31970 Rev 03 π ...

Страница 9: ...Industriestrasse 26 CH 8117 Faellanden Switzerland Phone 41 44 825 91 11 Fax 41 44 825 96 96 http www bruker com E mail service bruker ch Please refer to the Model No Serial No and Internal Order No in all correspondence regarding the NMR system or components thereof ...

Страница 10: ...10 ZTKS0178 Z31970 Rev 03 Contact ...

Страница 11: ...te of the technology The manufacturer assumes no liability for damages resulting from non compliance with the instructions and all applicable documentation use for purposes not intended not sufficiently approved persons arbitrary changes or modifications and use of not approved spare parts or accessories 1 3 Customer Service Technical support is provided by Bruker Service via telephone or e mail F...

Страница 12: ...ble optionally The nitrogen turrets 4 connected with the nitrogen flow system 6 and the heat exchangers 5 are the interface to the nitrogen vessel The nitrogen fill in turret is marked with a green label The helium turrets 8 9 connected with the helium flow system 7 are the interface of the helium vessel and the magnet coil The helium fill in turret 9 is marked with a yellow label The current lead...

Страница 13: ...onnel As a result of professional training by Bruker Service Personnel experience and knowledge of applicable regulations these persons are qualified to perform the specific tasks on the magnet system and its components assigned to them in this manual Approved Customer Personnel are qualified to identify possible hazards and risks associated with the tasks assigned to them and to perform all possi...

Страница 14: ...nstruction plates The customer has to ensure the intended use of the magnet system The customer has to inform the local fire brigade about the special risks of the magnet system and how to react in the event of an incident The customer must clearly define the responsibilities for operation and maintenance The customer must ensure that all employees working with the magnet system have read and unde...

Страница 15: ...s a hazardous situation which if not prevented will result in death or serious injury WARNING Indicates a hazardous situation which if not prevented could result in death or serious injury CAUTION Indicates a hazardous situation which if not prevented may result in moderate or minor injury NOTICE Hazard which could result in property damage ...

Страница 16: ...s Work must only be carried out by approved persons with applicable qualifications The necessary qualifications are specified in the beginning of the relevant chapter In case of doubt contact Bruker Service Contact information see page 9 of this document WARNING Risk of damage to life and limb by incorrect use of the magnet system Incorrect use of the magnet system can lead to life threatening sit...

Страница 17: ...y devices Do not remove safety devices Check the operational reliability of the safety devices before working on the magnet system WARNING Risk of injury and property damage from using incorrect or defective spare parts and accessories Incorrect or defective spare parts can cause serious injuries They may cause damaging malfunctioning and the destruction of the magnet system Thus Only use original...

Страница 18: ...o health Duration of exposure 8 h day above the limit of 200 mT can cause damage to health Ferromagnetic tools in the magnetic field are significantly hazardous Disks and electronic devices may be damaged Thus Mark the magnetic field of more than 0 5 mT 5 Gauss before start up Keep people with active medical implants away from the 0 5 mT 5 Gauss area The permanent workplace of employees must be ou...

Страница 19: ... agents are extremely cold Contact with liquid or gaseous cryogenic agents will lead to cold burns Contact with the eyes may cause blindness Refer to Warning Low Temperature on page 21 Thus Only use cryogenic agents in well ventilated rooms In case of doubt ask Bruker Service Wear an oxygen monitor on the body during service and maintenance work Prevent any skin contact with liquid or gaseous cryo...

Страница 20: ...stat and further equipment The helium or the nitrogen vessel of the cryostat may get sealed off due to ice formation inside the helium or the nitrogen turrets in case of non compliance with the instruction given in this manual This may lead to overpressure and damage of the helium or the nitrogen vessel Manipulations of components with gas under pressure may lead to injury and property damage Thus...

Страница 21: ...ure sensitive components such as O rings from contact with liquid cryogenic agents WARNING Risk of injury from spontaneous ignition and explosion caused by liquid oxygen Pure oxygen condenses on extremely cold metal pieces Together with oil it may ignite spontaneously In case of fire the pure oxygen may cause an explosion Thus Do not smoke near the magnet system Do not use open flames near the mag...

Страница 22: ...stem on your own WARNING Risk of damage to life and limb caused from heavy weights Lifting heavy weights is life threatening due to falling or moving parts Thus Do not stay or work under a lifted magnet system All lifting equipment in use must be approved to carry the weight Do not use damaged lifting equipment Do not use lifting equipment without updated check tag Lifting only with approved quali...

Страница 23: ...e the boxes in an upright position Do not tilt the boxes Prevent crossing thresholds even if they are only a few millimeters high Clean the transportation way before moving the box Unpack shortly before assembling The cryostat or further equipment must be protected from rain and other bad weather conditions during transportation Exclusively move the cryostat in its original box Do not remove the t...

Страница 24: ...act with extremely cold liquids or surfaces and for protection from injury caused by rough edges Protective Clothes Used to protect the body from injury caused by contact with extremely cold liquids or surfaces and for protection from wounds Safety Shoes Used to protect the feet from injury from falling of heavy objects An anti slip sole protects from injury caused by slipping and falling on slipp...

Страница 25: ... in the identified area of 0 5 mT 5 Gauss and are not allowed to enter these areas Prohibition sign No watches or electronic devices Watches and electronic devices may be damaged in the identified area of 0 5 mT 5 Gauss Prohibition sign No credit cards or other magnetic memory Credit cards and magnetic memory may be damaged in the identified area of 0 5 mT 5 Gauss Prohibition sign Do not touch Do ...

Страница 26: ...gnet system is equipped with the following safety devices Figure 2 1 Safety Devices of the Cryostat with 3 Helium Turrets 1 Drop off Plate 2 One way Valve of the nitrogen vessel 3 Safety Valve of the nitrogen vessel 4 One way Valve of the helium vessel 5 Quench Valves 6 Bursting Disc ...

Страница 27: ...1 is a safety device of the RT vessel If the vacuum breaks the drop off plate will open In case of an accidental overpressure in the RT vessel the drop off plate will release the pressure smoothly Bursting Disc The bursting disc 6 is another safety device of the helium vessel only at cryostats with 3 helium turrets It opens with a defined pressure In case of an accidental overpressure in the heliu...

Страница 28: ...d Burns Help the injured persons to lie down comfortably in a warm room Loosen all clothing which could prevent blood circulation in the injured area Pour large quantities of warm water over the affected parts Cover the wound with dry and sterile gauze In case of contact of liquid cryogenic agents with the eyes rinse thoroughly with clean water Call for medical assistance 2 9 Fire Department Notif...

Страница 29: ...ructions in this chapter and to inform these persons before 3 2 Packaging WARNING Heavy Weights see page 22 CAUTION Transportation see page 23 Figure 3 1 Packaging without surrounding panels The cryostat is supplied in a wooden box on a pallet It is secured inside with straps against tilting and moving Accessories such as the flow systems level sensors and bore tubes are in the side compartment of...

Страница 30: ...rs Shock Watch Tilt Watch on the boxes show if the boxes were kicked or tilted during transportation Checks Shock Watch Follow instructions on the label Tilt Watch Follow instructions on the label In case of damage Accept delivery with reservation Make a documentation of all observable damage and add it to the transportation documents Start complaint process Contact Bruker Service before installat...

Страница 31: ...nt side 1 Check the route of transport for the minimal height and width 2 Check sufficient floor capacity on the route of transport In case of doubt ask a stress analyst 3 Check sufficient carrying capacity while using an elevator 4 Position the forks between the bars of the box as shown in the figure Make sure the side towards the operator is the one with the labels on it Figure 3 3 Transportatio...

Страница 32: ...e marked eyelets as attachment points for the lifting equipment 2 Use all eyelets for the lifting equipment Figure 3 5 Instruction Label for Lifting Equipment 3 Follow the instructions on the label on top of the cryostat This label gives important information about correct attachment and transportation 4 Check for correct fastening of the lifting equipment before lifting the cryostat 5 Make sure t...

Страница 33: ...xes in a closed dry and dust free room Store the boxes upright Do not tilt the boxes Do not unpack the supplied boxes Prevent mechanical vibrations to the boxes Storage temperature 5 40 C Storage humidity less than 50 23 C 3 7 Disposal For disposal after the life cycle please contact Bruker Service for further information For contact information see page 9 of this document ...

Страница 34: ...34 ZTKS0178 Z31970 Rev 03 Transportation ...

Страница 35: ...35 ZTKS0178 Z31970 Rev 03 4 Assembling 4 1 Safety Approved Persons Bruker Service only ...

Страница 36: ...36 ZTKS0178 Z31970 Rev 03 Assembling ...

Страница 37: ...31970 Rev 03 5 Operation 5 1 Safety Approved Persons Bruker Service Approved Customer Personnel WARNING Magnetic Field see page 18 Cryogenic Agents see page 19 Electricity see page 19 Gas under Pressure see page 20 ...

Страница 38: ...d with a magnet stand with pneumatic isolators Set the magnet stand into operation by switching the pneumatic controller to UP position Figure 5 2 Stop the Magnet Stand For any work at the magnet system like maintenance or refill of cryogenic agents stop the magnet stand by switching the pneumatic controller to DOWN position ...

Страница 39: ...e immediately For contact information see page 9 of this manual 6 1 Safety Approved Persons Bruker Service Approved Customer Personnel Personal protective equipment Protective goggles Protective gloves Protective clothes Safety shoes WARNING Magnetic Fields see page 18 Cryogenic Agents see page 19 Electricity see page 19 Gas under Pressure see page 20 Spontaneous Ignition and Explosion see page 21...

Страница 40: ...ation 2 Remark the extent of damage in the trans portation documents 3 Start complaint process Approved Customer Personnel Indicator Possible reason Solution By Ceiling height too low for assembling on magnet stand Site does not meet the required conditions Choose another site that meets the required conditions Bruker Service Ceiling height too low for inserting the Helium Level Sensor Site does n...

Страница 41: ...ng line Check pumping unit and pumping line A vacuum less than 10 6 mbar must be reached with a closed sealing plug Replace if necessary Bruker Service Room temperature bore tube has scratches or dust on the sealing surfaces Check sealing surfaces on the room temperature bore tube No scratches and no dust should be visible Bruker Service Moisture in the RT vessel Pump and flush the RT vessel sever...

Страница 42: ...tinues too quickly Transfer pressure too high Stop cooling Adjust correct transfer pressure Bruker Service Vacuum in RT vessel does not reach 5 x 10 5 mbar in 48 hours O rings may be leaky Check and clean O rings and slots replace O rings if necessary of the Vacuum Valve of the drop off plate of the reduction and sealing flanges of the bottom plate a Bruker Service O rings may be frozen due to con...

Страница 43: ...l liquid nitrogen using the precooling tube 3 Check with the dipstick to be sure that the helium vessel is completely empty no liquid nitrogen or frozen nitrogen Bruker Service After some intervals of flushing it is not possible to reach a vacuum in the range of 1 mbar The globes in the quench valves are not fitting correctly in the O rings and thus the quench valves are leaky 1 Stop pumping 2 Rem...

Страница 44: ... dewar Bruker Service The transfer pressure in the transportation dewar is too low Increase the transfer pressure Bruker Service The transportation dewar is leaky no transfer pressure built up Check the transportation dewar for leakage Re tighten all connections Bruker Service The siphon or the helium transfer line are blocked with ice Check the siphon and helium transfer line for blockages remove...

Страница 45: ...ach 100 after cooling down Empty transpor tation dewar helium transfer stopped Refill or replace transportation dewar Bruker Service The Helium Level Sensor is disturbed by the transfer line s extension piece 1 Stop the liquid helium transfer 2 Remove the transfer line 3 Measure the helium level after some minutes without the transfer line Bruker Service After cooling down the helium boil off is h...

Страница 46: ...ervice Connector or cables defective Clean connectors or replace cables if necessary Bruker Service Setting of sense voltage fails The main coil heater switch is OFF The main coil switch is not opened Switch the main coil heater to ON and check the main coil heater current to be adjusted correctly Bruker Service The main coil heater current is not correct The main coil switch is not opened Adjust ...

Страница 47: ...ating Replace the Power Supply Bruker Service The main coil switch can not be closed on field The helium level is too low for energiz ing The main coil switch is not covered with liquid helium Never try to energize the magnet with less than the minimum level during ener gizing in the helium vessel Bruker Service The Power Supply is defective The main current is oscillating Replace the Power Supply...

Страница 48: ...in DOWN position Switch pneumatic controller to UP position Approved Customer Personnel Magnet system has direct mechanical contact with the floor via accessories or cables Identify and eliminate contact point Arrange cables in loose S or U shapes Approved Customer Personnel If the problem is still not solved contact Bruker Service Approved Customer Personnel Magnet system has physical contact to ...

Страница 49: ...eled correctly Stop the pneumatic isolators Check the leveling of the cryostat Bruker Service Defective leveling valve Replace leveling valve or isolator Bruker Service Defective mem brane of an isolator Replace leveling valve or isolator Bruker Service Magnet system achieves working position jerkily Piston is not centric or touching its casing Align magnet stand Bruker Service Audible loss of air...

Страница 50: ... ice Blow in warm helium gas carefully through an applicable tube Do not insert it more than 600 mm from the top of the helium turrets Bruker Service The helium boil off is too high The Helium Level Sensor is permanently on service mode or used often Switch off Helium Level Sensor Reduce frequency of helium level measurement during measuring of the helium level an amount of helium boils off due to...

Страница 51: ...proved Customer Personnel RT vessel is wet and cold Vacuum reduced Contact Bruker Service immediately Approved Customer Personnel Not correct helium level warning out of MICS Helium Level Sensor defective Contact Bruker Service immediately Approved Customer Personnel Helium level at constant level no change during days Helium Level Sensor defective Contact Bruker Service immediately Approved Custo...

Страница 52: ...ect the control cable to the current lead and to the Power Supply correctly Bruker Service The switch Main Coil OFF Shim Coil is not on the Shim Coil position Switch Main Coil OFF Shim Coil on the Shim Coil position Bruker Service High helium flow after breaking vacuum Remaining cryogenic agents in the vessels Remove liquid cryogenic agents Bruker Service Vacuum still remains after 12 hours Vacuum...

Страница 53: ...tem If destroyed close the socket with the supplied plug to prevent air from entering the helium flow system or vessel 6 Remove probe and shim system to prevent icing of the shim system 7 Check the nitrogen turrets for icing 8 Start the refill with liquid helium as soon as possible after the quench within one hour after the quench refer to the supplied Refilling Procedure 9 Contact Bruker Service ...

Страница 54: ...54 ZTKS0178 Z31970 Rev 03 Troubleshooting i If the quench occurs unattended or helium transfer was not possible within one hour after the quench it is recommended to warm up the system to 90 K ...

Страница 55: ...e page 9 of this document 7 1 Safety Approved Persons Bruker Service Approved Customer Personnel Personal protective equipment Protective goggles Protective gloves Safety shoes WARNING Magnetic Field see page 18 Cryogenic Agents see page 19 Electricity see page 19 Gas under Pressure see page 20 Low Temperatures see page 21 Spontaneous Ignition and Explosion see page 21 ...

Страница 56: ...sary according to the supplied Refilling Procedure respecting the warn ings and instructions given there Record the filling session Deviation from estimated consumption may be used for identification of troubles In this case contact Bruker Service Approved Customer Personnel weekly Cryostat Check the nitrogen level Refill liquid nitrogen if necessary according to the supplied Refilling Procedure r...

Страница 57: ...57 ZTKS0178 Z31970 Rev 03 8 Disassembling 8 1 Safety Approved Persons Bruker Service only ...

Страница 58: ...58 ZTKS0178 Z31970 Rev 03 Disassembling ...

Страница 59: ...59 ZTKS0178 Z31970 Rev 03 A Appendix Warning Signs Figures Tables Glossary Abbreviations Technical Data Index ...

Страница 60: ...60 ZTKS0178 Z31970 Rev 03 Appendix ...

Страница 61: ...Gas under Pressure 20 Heavy Weights 22 Intended Use 16 Key Word and Symbol 15 Low Temperatures 21 Magnetic Field 18 Persons 16 Quench 20 Safety Devices 17 Signs and Labels 18 Slippage 21 Spare Parts 17 Spontaneous Ignition and Explosion 21 Caution Incorrect Transportation 23 Key Word and Symbol 15 Notice Key Word and Symbol 15 ...

Страница 62: ...62 ZTKS0178 Z31970 Rev 03 Appendix ...

Страница 63: ... Magnet Stand 38 Figure 6 1 Quench Picture 53 Figure A 1 Dimension Cryostat Front View 70 Figure A 2 Dimension Cryostat Top View 72 Figure A 3 Nitrogen Level Graph 74 Figure A 4 Helium Level Graph 75 Figure A 5 Nitrogen Level Sensor 76 Figure A 6 Helium Level Sensor 77 Figure A 7 Characteristic Curve PT 100 78 Figure A 8 Characteristic Curve IBT 79 Figure A 9 Fringe Field Plot 81 Figure A 10 High ...

Страница 64: ...64 ZTKS0178 Z31970 Rev 03 Appendix ...

Страница 65: ... Table A 6 Helium Level Sensor 77 Table A 7 Characteristic Values PT 100 78 Table A 8 Characteristic Values IBT 79 Table A 9 Specification of the Magnet 80 Table A 10 Fringe Field Values 81 Table A 11 Resistance at Room Temperature 89 Table A 12 Heater Currents 90 Table A 13 Energizing Assignment and Currents 90 Table A 14 Cycling Assignment recommended only for 500 Mhz and more 91 Table A 15 Ener...

Страница 66: ...66 ZTKS0178 Z31970 Rev 03 Appendix ...

Страница 67: ...gnet inside the cryostat is not energized Dewar Any kind of package used for transporting cryogenic agents like liquid helium or nitrogen Pressure Cylinder Any kind of package used for transporting gaseous agents with a pressure up to 200 bar Magnet System The collective of all parts necessary for the intended use The superconducting magnet inside the cryostat is energized Abbreviations Descriptio...

Страница 68: ...68 ZTKS0178 Z31970 Rev 03 Appendix ...

Страница 69: ...ate Address of the Manufacturer Magnet System Identifier Type Identification Number Magnet Identifier Serial Number Year of Construction Cryostat Identifier Specification Helium Vessel Specification Nitrogen Vessel Specification Vacuum Chamber Weight total empty full Value Unit Minimum surrounding temperature 7 C Maximum surrounding temperature 38 C Maximum relative humidity up to 31 C 80 Maximum ...

Страница 70: ...70 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Dimensions Cryostat Front view Figure A 1 Dimension Cryostat Front View ...

Страница 71: ...tom Plate 1364 mm H1 Height Cryostat bottom plate to top flange 1666 mm H2 Height Cryostat minimum height for transportation 1925 mm H3 Height Cryostat bottom plate to flow system 2082 mm S Height Magnet Stand floor to bottom plate 950 mm M1 Distance magnetic Center to bottom flange calculated 566 0 mm M2 Distance magnetic center to top flange calculated 1100 0 mm Table A 2 Dimension Cryostat Fron...

Страница 72: ...89 Ascend Top view Figure A 2 Dimension Cryostat Top View Dimensions Cryostat Value Unit W1 1920 mm W2 1756 mm D3 1 1 Keep at least an additional free space of 1 5 m around the magnet system for service 2180 mm Table A 3 Dimensions Cryostat Top View ...

Страница 73: ...lume 391 l Nitrogen refill volume 309 l Nitrogen evaporation rate 460 ml h Nitrogen hold time1 28 days Helium vessel total volume 511 l Helium refill volume 303 l Helium evaporation rate 70 ml h Helium hold time1 1 Maximum time intervall between two fillings 180 days Helium refill volume after Quench cool down and refill 700 l Table A 4 Cryogenic Agents ...

Страница 74: ...0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Nitrogen Level Graph Figure A 3 Nitrogen Level Graph 0 1620 0 mm 0 liters 50 100 150 200 250 300 350 390 5 1343 4 320 0 top of N2 vessel minimum allowed level ...

Страница 75: ...75 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Helium Level Graph Figure A 4 Helium Level Graph ...

Страница 76: ...rret 6 lights display the nitrogen level Nitrogen Level Sensor Material No Value Unit Level Sensor Type Z122408 7 1441 1160 Diameter 7 mm Overall length 1441 mm Active length 1160 mm Table A 5 Nitrogen Level Sensor Figure A 5 Nitrogen Level Sensor Nitrogen Level at more than 90 70 90 50 70 30 50 10 30 Schedule Refill less than 10 Refill immediately ...

Страница 77: ...or Material No Value Unit Level Sensor Type Z58103 1500 874 Overall length 1500 mm Active length 874 mm Calibration 0 Calibration resistor Z53168 violet 177 Ω Calibration 100 Calibration resistor Z28628 black 15 Ω Table A 6 Helium Level Sensor Figure A 6 Helium Level Sensor 1 Pin Side 2 Solder Side 3 Pin connector 4 Active length 5 Sensor tube 6 Superconductor ...

Страница 78: ...the magnets during cooling and warming up of the magnet system PT 100 i Measure the resistance with a maximum current of 1 mA Temperature Unit Resistance Unit Room Temperature 293 K 107 8 Ω 273 K 100 0 Ω 250 K 91 0 Ω 200 K 71 1 Ω 150 K 50 9 Ω 100 K 30 0 Ω Liquid Nitrogen 77 K 20 1 Ω Table A 7 Characteristic Values PT 100 Figure A 7 Characteristic Curve PT 100 ...

Страница 79: ...Resistance with a maximum current of 0 1 mA Temperature Unit Resistance Unit Room Temperature 300 K 220 Ω Liquid Nitrogen 77 K 265 Ω 40 K 300 Ω 20 K 350 Ω 10 K 420 Ω 8 K 450 Ω 6 K 500 Ω 5 K 540 Ω Liquid Helium 4 2 K 575 Ω Table A 8 Characteristic Values IBT Figure A 8 Characteristic Curve IBT ...

Страница 80: ... energized and de energized Persistent Mode In the persistent mode the electricity is flowing exclusively within the magnet The circuit has no connection to the outside The magnetic field cannot be switched off Technical Data Magnet Value Unit Proton frequency 750 MHz Central field 17 62 T Coil inductance 120 H Magnetic energy 4102 kJ Magnetic center from bottom flange design value 566 0 mm Maximu...

Страница 81: ...Unit R max Unit Z max Unit 200 mT 0 51 m 0 98 m 5 0 mT 0 90 m 1 86 m 3 0 mT 1 00 m 2 04 m 1 0 mT 1 27 m 2 47 m 0 5 mT 1 50 m 2 80 m 0 2 mT 1 87 m 3 30 m 0 1 mT 2 19 m 3 74 m 0 05 mT 2 57 m 4 24 m max magnetic field B0 at access point 692 mT max field gradient dB dz at access point 5 88 T m Table A 10 Fringe Field Values ...

Страница 82: ...82 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend High Current Lead Figure A 10 High Current Lead 2 pins ...

Страница 83: ...83 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Current Lead Figure A 11 Current Lead 55 pins ...

Страница 84: ...84 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Wiring Diagram Magnet Figure A 12 Wiring Diagram Magnet ...

Страница 85: ...85 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Wiring Diagram Magnet Control and Shims Figure A 13 Wiring Diagram Magnet Control and Shims ...

Страница 86: ...86 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Wiring Diagram Magnet Diagnostic and Temperature Sensors Figure A 14 Wiring Diagram Magnet Diagnostic and Temperature Sensors ...

Страница 87: ...he high current shorting plug is plugged after removal of the high current lead After inserting the high current shorting plug the current flows through the high current shorting plug and no longer through the high current lead and the power supply Figure A 15 High Current Shorting Plug ...

Страница 88: ...scend Shorting Plug The shorting plug is plugged after removal of the current lead After inserting the shorting plug the current flows through the shorting plug and no longer through the current lead and the power supply Figure A 16 Shorting Plug 55 pins ...

Страница 89: ...19 PIN Con CONTROL Z Heater Ω From To PIN C D E F PIN B G J K 10 PIN Con SHIM 10 PIN Con SHIM Shim Coils Ω From To PIN T High current Con 19 PIN Con CONTROL High Current to Sense Ω From To High current Con High current Con Main Coil Ω From To PIN U High current Con 19 PIN Con CONTROL High Current to Sense Ω From To PIN T PIN U 19 PIN Con CONTROL 19 PIN Con CONTROL Sense Sense Ω From To PIN C PIN S...

Страница 90: ...y ON Heater Currents Value Unit Main heater current A Shim heater current A Table A 12 Heater Currents Energizing Currents A Sense voltage mV Remarks Bruker Test Site 0 to to to to to Overshoot 0 _ _ of final current to Overshoot 50 10 Minutes break at overshoot current Overshoot to Final Current 50 Total energizing time min Rate of current ramp down with magnet in persistent mode A min 20 Table A...

Страница 91: ...nts Value Unit Time between energizing and cycling h Time between cycling and shimming h Current rate A h Z Shim current A Z2 Shim current A Z3 Shim current A X Shim current A Y Shim current A XZ Shim current A YZ Shim current A XY Shim current A X2 Y2 Shim current A Frequency change due to cycling kHz Date and Signature Table A 14 Cycling Assignment recommended only for 500 Mhz and more ...

Страница 92: ... Site 1 Value Customer Site 2 Unit Magnet main current A Z Shim current A Z2 Shim current A Z3 Shim current A X Shim current A Y Shim current A XZ Shim current A YZ Shim current A XY Shim current A X2 Y2 Shim current A Magnetic center from bottom flange measured mm Magnetic center from top flange measured mm Date and Signature Table A 15 Energizing Currents ...

Страница 93: ...nergizing Assignment and Currents _ _ _ _ _ _ _ _ _ _ _ Deenergizing Currents A Sense voltage mV Remarks Bruker Test Site to 205 400 205 to 190 1000 190 to 0 2000 through external diodes Total deenergizing time min Table A 16 Deenergizing Assignment and Currents ...

Страница 94: ...94 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend This page is intentionally left blank ...

Страница 95: ...95 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Nitrogen Refill Report Nitrogen level before refill Nitrogen level after refill Refill Volume l Date Time Signature ...

Страница 96: ...96 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Nitrogen Refill Report Nitrogen level before refill Nitrogen level after refill Refill Volume l Date Time Signature ...

Страница 97: ...97 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Helium Refill Report Helium level before refill Helium level after refill Refill Volume l Date Time Signature ...

Страница 98: ...98 ZTKS0178 Z31970 Rev 03 Technical Data MS 750 89 Ascend Helium Refill Report Helium level before refill Helium level after refill Refill Volume l Date Time Signature ...

Страница 99: ...omplaint Process 30 Cryogenic Agents 18 19 Cryostat 12 26 D Disturbances 48 Drop off Plate 27 E Electricity 19 Emergency 28 Emergency Exit 25 F Fire Department 28 First Aid for Cold Burns 28 I Identification Plate 69 Intended Use 16 L Liability 11 Low Temperatures 21 M Magnetic Field 18 O One way Valves 27 ...

Страница 100: ...ve Clothes 24 Protective Gloves 24 Protective Goggles 24 Q Quench 20 53 Quench Valve 27 R Rescue Equipment 28 S Safety Devices 26 Safety Shoes 24 Safety Valve 27 Shock Watch 30 Slippage 21 Spontaneous Ignition 21 T Tilt Watch 30 Tilting 22 Transportation 23 W Warranty 11 ...

Страница 101: ...according to the specific form of the Corporate Guide Line and the definition from the Bruker documentation group and a new order of content 01 April 2011 Update including nitrogen level sensor 02 July 2012 Update magnet design 03 September 2012 Update and released fringe field data and related directives ...

Страница 102: ...r you the opportunity to collaborate with us on new developments Our ongoing efforts and substantial investment in research and development demonstrate our long term commitment to technological innovation on behalf of our customers With 50 years of experience in meeting the needs of the scientific community across a range of specialist disciplines Bruker has built a sound rapport with professional...

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