Amendment_0002_to_RFQ_SB1341-16-RQ-0190_final.pdf

Amendment 0002 to RFQ SB1341-16-RQ-0190

Amendment 0002 to Request for Quotation (RFQ) SB1341-16-RQ-0190

Amendment 0002 to RFQ SB1341-16-RQ-0190 incorporates changes to the required specifications listed in Attachment A – NIST SSD Cryogen-Free Optical Cryostat System of

RFQ SB1341-16-RQ-0190.

1. The changes to the specifications are as follows:

Contract Line Item (CLIN) 0001: The Contractor shall provide all parts, labor, and material for a quantity of one (1), Cryogen-Free Low Temperature Optical Measurement System, meeting or exceeding the following minimum technical requirements:

1. Refrigerator:

a. base temperature < 4 K

b. > 0.1 W of cooling power at 4.2 K

c. > 4 W of cooling power at the first stage (temperature < 60 K)

d. temperature-control for refrigerator

2. Compressor:

a. electrical: 200 V 3-phase or 120 V single phase, 60 Hz

b. power consumption < 20 kW

c. if water cooled, then < 25 L/min cooling water required

d. < 3 kW of power dissipated into the surrounding air

e. Noise < 70 dB at distance of 0.5 m

3. Optical Cryostat:

a. Sample volume > 175 mm in diameter and > 70 mm high

b. Sample cold plate > 150 mm in diameter, with grid of threaded holes for mounting measurement fixtures. Sample cold plate must have base temperature < 5 K.

c. Includes electrical feedthroughs containing at least 50 pins, in addition to manufacturer-supplied thermometers and heaters

d. Cold shield which can reach a base temperature < 5 K included around sample volume

e. At least two optical port with diameter of approximately 50 mm at outside of cryostat and diameter > 25 mm at the innermost port. Must have fittings to allow user to mount own windows or filters at the optical ports.

f. Includes multi-turn valve to evacuate vacuum space and safety pressure release valve for vacuum space

4. Cooldown time for the measurement volume from 300 K to 5 K shall be < 16 hours.

5. Temperature stability of the measurement cold plate shall be < 250 mK. (Stronger consideration shall be given to a contractor who provides the lowest temperature stability)

6. The amplitude of vibrations at the measurement cold plate shall be < 30 µm.

(Stronger consideration shall be given to a contractor who provides the lowest amplitude of vibrations)

7. Control electronics necessary for operation of the system (e.g., temperature control) shall be included. All necessary accessories for operation (e.g., flexible cables from

Amendment 0002 to RFQ SB1341-16-RQ-0190 compressor to cryo-cooler) shall be included. Any software necessary for operation shall be included.

CLIN 0002: Option Line Item – Upgrade of System to reach temperature no more than

500 mK at Sample Stage.

2. The amended Attachment A – NIST SSD Cryogen-Free Optical Cryostat System is attached to this amendment.

3. The response date to this solicitation is hereby extended to 1:00 p.m. Eastern, Friday April 1, 2016.

END AMENDMENT 0002