Item No.*9: 14T Cryogen Free System for measurement of physical properties:

Transcription

1 Item No.*9: 14T Cryogen Free System for measurement of physical properties: Specifications: Scope: Supply and installation of completely integrated and fully automated 14 Tesla cryogen free magnet system for measurement of physical properties as a function of temperature and magnetic field and is fully compatible with various measurement probes of Heat Capacity, vibrating sample magnetometer, Electrical Transport, AC magnetic susceptibility, Thermal Transport, dilution refrigerator, He-3 option etc. The system should operate over a wide temperature range of 1.8K to 400K and in magnetic fields up to 14 Tesla (140 koe). I. Basic Cryogen free magnet System (Low temperature and high magnetic fields): Both superconducting magnet and cryostat assembly should be cooled by single pulse tube type (two stage) closed cycle refrigerator (CCR) of appropriate cooling capacity of cold head and compressor. Cryostat Cooling Technology: Cryostat assembly which will include sample chamber and radiation shields and other assembly must be cooled by counter flow heat exchange mechanism for efficient cooling and efficient use of cooling resources. It should be equipped with double cold gas flow control systems, one for primary gas flow (max. flow rate ~ sccm) and a secondary fine flow (max rate ~1000 sccm) of gas/liquid to achieve quick and good temperature control. It should be continuous low-temperature operation. All the operations must be full automated without user intervention System should not use the inefficient mechanism of externally located helium reservoir and circulation mechanism and needle valve to control flow of gas, which results in very poor temperature control. The system should enable cooling of samples from highest temperature to the lowest at the highest specified cooling rate at any given magnetic field (up to 14T) without affecting the system performance or heating of magnet or resulting in a magnet quench. Same thing should hold good for heating the samples as well. Similarly one should be able to ramp the magnetic field to any value in the field loops of 0 to +14T to 0 to -14T to +14T at any sample temperature from 1.8K 400K. Any Liquid Helium and/or cold Helium gas flow into sample chamber or to any other parts within the system, and all low temperature operations must be handled

2 in fully automated way through electronic and computer controls. The system should NOT have any manual control in the entire operation of the system. The system should be equipped with number of thermometers at different stages/locations to monitor their temperatures through the main operating software. The system should have a built-in Cryo-pump that should be capable of pumping down to 10-4 torr. No external vacuum system need to be used to pump out sample chamber/or any other parts during sample changes or at other occasions in the normal operation routine. The main operating software should control and monitor the entire operation of the cryo magnet system and capable of running standard measurements. Various measurement probes when added, the main software should have either built-in capability or should be fully compatible with additional software and electronic modules that may be added as part of particular measurement probe. The system should have capability either built-in or should have full compatibility both in terms of hardware and software for the following measurement probes, irrespective of whether they are purchased now with the system or added at a later stage. The measurement options are (i) vibrating sample magnetometer, (ii) heat capacity, (iii) electrical transport, (iv) thermal transport, (v) ac susceptibility, (vi) dilution refrigerator and (vii) He-3 insert. The system should meet the following magnetic field and temperature parameters: Magnetic Field: a) Vertical Magnetic Field: 0 ±14 Tesla (continuously variable) with mt resolution b) Field uniformity of ±0.1% over sample space c) Highly stable bipolar power supply d) Magnet must be protected from quenches e) The magnet should have Oscillating mode so as reduce remnant magnetic field as small as possible. Low Temperatures: a) Temperature range: K with milli Kelvin stability and accuracy b) Fastest time to cool from 300K to 2K : 40 minutes or better c) Temperature Stability: ±0.1% for T < 10K and ±0.2% for T > 10K d) Temperature control modes: Fast Settle, No Overshoot, and Sweep mode Closed Cycle Refrigerator:

3 A two stage pulse-tube type closed cycle refrigerator of suitable wattage at 4K and appropriate compressor should be supplied. The cold head must be properly integrated into the base system. High pressure helium gas hoses of standard length must be provided for CCR. Optionally quote for shorter CCR gas hoses (shorter length should not affect CCR performance) Electrical Supply Wiring: Our electrical Supply is 230 V, 50 Hz for single phase & V for 3 phase supply. All units must be wired accordingly. Water Chiller and Uninterrupted Power Supply (UPS) In case of water cooled compressor, a good quality and reliable water chiller of appropriate capacity, compact in size, must be supplied. Specify make and model no. in your quotation. A highly reliable UPS that takes into account of all the power requirements (including any probes that may be added in future). A minimum of 40kVA UPS with at least ½ hour back up must be provided. Specify make and model no. in your quotation. II. Measurement Probes (The base system described above must have full compatibility with the following measurement systems, irrespective of whether some are procured now with system or added as upgradation at any later date) 1. Heat capacity measurement system: Relaxation technique, two-tau model fit analyses, corrections of back grounds from sample platform, adhesives, etc., through sophisticated software routines that is fully integrated to the main system software. Heat Capacity range : 10 J/K to 100 mj/k with a resolution of 10 2K Temperature Range: 1.9K 400K Measurement Accuracy: <5% over 2K 300K, ~2% typical Sample Mass: mg (~20 mg typical) Possibility of He-3 option for 0.4K 350K temperature range 2. DC Resistance measurement: Four wire dc resistance measurement over 1.8K to 400K

4 Absolute Accuracy: 0.03% typical for R < 100 and 0.2 % overall with relative accuracy ±1n. Simultaneous measurement of R on 3 samples; easy mounting of samples Current : 5nA 5mA with 10nA step size Resistance range: up to 4M or better 3. Horizontal Sample rotator: To measure angular dependence of resistivity, Hall Effect, I-V Characteristics, etc., in an axis perpendicular to vertical magnetic field. Should have easily mountable/dismountable PCB sample loading platform with gold pads for electrical connections. It should be capable of mounting 2 samples and should have thermometer to closely monitor sample temperature. Angular range : -10 to 370 with a step size of 0.05 ; Angular speed ~ 10 /sec Quote separately for high precision rotation option with step: and speed 1 /sec. Should have all necessary hardware and software to incorporate into the base system for the above mentioned measurements. 4. Electrical Transport measurement Probe: 4-wire & 2-wire resistivity and simultaneous Hall effect measurement, I-V characteristics and differential resistance measurement (dv/di vs. I or dv/di vs V) Should provide at least two independent channels for Van der Paw and four-wire resistance measurements. Should have two built-in independent sources and meters so that two measurement channels are truly independent. In addition to standard mode (4-wire resistance up 10M ), there should be high impedance mode - 2-wire resistance measurement up to 5GΩ Current Source: DC & AC, 10nA to 100 ma continuous Resistance range: - 10M (4-wire typical) with 0.1% - 0.2% (0.03% for R < 100 ) absolute accuracy and 10n relative accuracy; up to 2 G (2-wire typical) 5. AC Susceptibility: A.C. Susceptibility including for Higher Harmonics Frequency Range: 10 Hz 10 khz or more

5 AC Field Amplitude: 2 moe to 15 Oe AC Sensitivity: 2x10-8 emu Higher harmonics details Temp. range : 1.8K 350K or better Sample size : ~ 5mm dia x 10mm length 6. Thermal transport system Should be able to measure the thermal conductivity, thermopower, and resistivity and thermoelectric figure of merit Temp. Range: 1.8K to 390 K. Thermal conductivity accuracy : ±5% (or ±2 W/K for T< 15K, ±20 W/K for 15 <T< 200K, ± 0.5 mw/k for 200K < T < 300 K, ±1 mw/k for T > 300K) Seebeck coefficient Accuracy: ±5% in S or ±0.5 V/K in S or ±2 V for V Resistance : specifications of AC transport with max I ~ 200mA 7. Multifunction Attachment: A multifunction probe insert to customize user defined experiments must be provided. It should be wired and mounted with thermometers. Details of wiring, connector and physical dimensions must be provided to enable the user design his own measurement system. 8. He-3 Attachment Should be compatible with heat capacity, resistivity and ac transport measurement systems. Fully automated and compact system that can be loaded into the main system very easily. Other than connecting cables, no other connections/plumbing lines (gas/liquid/vacuum) need to be made. Temp Range: 0.4 K 350K with a fast cool down of 2-3 hrs from 300K to 0.5K Fully controllable through software. 9. Dilution refrigerator Fully automated continuously circulating He3/He4 valve less dilution refrigerator to be installed into the sample space of above mentioned Cryo magnet system. Temp range 50 mk to 4 K. Space for user experiments: Around 20 x 25 mm should be available.

6 Optional Accessories and Spares: 1. Standard samples for calibration for all relevant probes must be provided 2. All sample handling kits/consumables also should provided 3. Wherever, consumable sample holders/mounts (such as PCB mounts, capsules, etc.) or other items, to handle samples while loading into a measurement probe must be quoted separately for enough quantity. 4. Quote separately for all optional items/accessories/probes which are not explicitly specified above. 5. If any pressure cell (operating pressure 10 kbar) is available, should also be quoted separately. The pressure cell should be supplied with all necessary components for integrating with a measurement probe(s). 6. Essential spares for pumps, control electronics, gas handling manifold, connecting lines, cables, O-rings and electrical fuses must be provided. 7. Quote separately for essential Cryogenic consumables like GE-7031 Varnish, Apiezon N, M & H Grease, Duco cement, low thermal solder, Kapton tape, and other critical parts. Additional requirements: 1. A list of users where similar equipment has been sold or under operation may be provided. 2. Windows based computer with preinstalled software for control of all necessary parts and probes for automated data acquisition. The operating system and all software for control and data acquisition should also be supplied in CD separately. 3. Dispatch and delivery of all the items to the work place in Mumbai, India should be made by the supplier. 4. Installation and commissioning should be done by the supplier s trained engineer(s) of all the items at the work place in Mumbai, India. 5. Free warranty and service for all the items for one year after the commissioning of the equipment are necessary. 6. Cost for an extended warranty and service for next two years (after one year free service as mentioned in #5) should also be quoted separately.

7 Terms and Conditions 1. Tender in sealed cover duly superscribed "Tender No.. dt. due on..for.. item.. " complete with all details, otherwise tender may not be opened/considered. If you are interested to quote more than one items, you shall submit the quotations in sealed cover separately. (*) items as mentioned in the Tender No. 03/ dt must be quoted in two parts (Part A-Technical and Part B-Financial). The two parts show separate sealed covers. 2. Price should be quoted CIP / CIF Mumbai & Insurance up to Indore separately (As per INCOTERMS 2010). In case of local firms they should quote for delivery in premises of this office. 3. Director, UGC-DAE CSR, Indore, reserves the rights of accepting in full or part /not accepting the tenders without assigning any reasons. 4. The acceptance of tender, will rest with the Director, UGC-DAE CSR, Indore, who does not bind himself to accept the lowest tender and reserves to himself the authority to reject any or all of the tenders received without assignment of any reason. 5. Delivery period must be mentioned. 6. The tender shall remain open for acceptance for a period of 90 days from the date of receipt. 7. The decision of the Director, UGC-DAE CSR, Indore, shall be final in all the cases. 8. Director, UGC-DAE CSR, Indore, shall not be liable for postal delays. The incomplete tenders or the tenders received after due date will not be considered. 9. Quote your offer along with literatures/catalogues, if any. 10. We are exempted from the excise duty. The excise duty exemption certificate is issued by Department of Science & Industrial Research (DSIR), Govt. of India, New Delhi under Notification No. 10/97-Central Excise dt. 1 March Our Registration No. is TU/V/RG-CDE(98)/2011 dt. September 13, 2011 & valid up to Price should be quoted exclusive of Customs Duty. This institution will take care of Customs Duty. 12. Sales Tax / VAT must be quoted separately. 13. No claim for any tax or duty, not stipulated in the tender will be admitted at any stage. 14. The tenderer should furnish the users list where similar equipment has been supplied recently. 15. Special care should be taken to write the rates in figures as well as in words. No overwriting be done on the rates and units. Arbitration: in connection with the present contract shall be finally settled under the Rules of conciliation and arbitration of 16 the International Chamber of Commerce should be replaced by between both parties in connection with the CONTRACT which cannot be settled amicably shall be exclusively & finally settled by Arbitration under the rules of conciliation and arbitration of the International Chamber of Commerce, Mumbai by one or more Arbitrators appointed in accordance with the said Rules. No deviation from the stipulated terms and conditions will be allowed. Tenders should be unconditional The equipment should be warranted for 12 months from the date of commissioning / installation. 19. It will be obligatory on the part of the tenderer to sign on your offer. 20. Subject to Indore Jurisdiction. 21. For Imported goods, the payment will be made through Letter of Credit or after receipt of goods by sight draft. No advance payment will be made. 22. For Indigenous goods no advance payment will be made. 23. The Performance bank guarantee must be provided till the warranty period. 24. The last date for submission of the tender documents is up to hrs. Tender will be opened on at hrs. Tenderer (s) / authorized representative(s) may attend on the opening of the tender bids.