MODIFICATION
66 -- Top-Loading Helium-3 Cryostat
- Notice Date
- 6/23/2003
- Notice Type
- Modification
- Contracting Office
- Department of Commerce, National Institute of Standards and Technology (NIST), Acquisition and Logistics Division, 100 Bureau Drive, Building 301, Room B129, Mail Stop 3571, Gaithersburg, MD, 20899-3571
- ZIP Code
- 20899-3571
- Solicitation Number
- Reference-Number-03-856-3263
- Response Due
- 7/24/2003
- Point of Contact
- Lisa Sawyer, Contract Specialist, Phone 301-975-3840, Fax 301-975-2541,
- E-Mail Address
-
lisa.sawyer@nist.gov
- Description
- The purpose of this solicitation modification is to extend the response date to 07/24/03 by 3:00pm and to supply Questions & Answers - Part 1 pertaining to the solicitation. Ref#03-856-3263. All other information remains the same. ****Questions & Answers Part 1****** 1)Question: From the write up received in the solicitation, there is not enough information to determine the envelope that the cryostat is inserted into, and were wondering if there are any drawings that would add clarity to the requirement? Answer: The solicitation is for a complete cryogenic system that will mount onto a tilt/translate goniometer with the described bolt pattern. NIST is not requesting a helium-3 insert to be placed in a helium-4 cryostat or storage dewar (which would not meet the specification forbidding liquid cryogens in the beam line). NIST did not provide specifications for the available space above the goniometer mount because typical offerings generally fit without problem on our targeted spectrometers. However, as a guide the entire cryostat shall not exceed a diameter of 10 inches in the neutron beam path. Above the neutron beam path, the cryostat shall be less than 24 inches in diameter. The overall height shall be expected to be less than 6 feet in a running configuration, and NIST has ample overhead clearance for removing cryostat inserts etc. None of these numbers are meant to be taken as inviolable requirements, but are merely given as guidelines. 2)Question: I understand that the sample cannot be in He-3 liquid but must be in either vacuum and (static) exchange gas. Please confirm? Answer: Yes, the sample shall be either vacuum or static exchange gas. This is addressed in the performance specifications and in the neutron scattering requirements. Liquid helium-3 produces too large a neutron scattering background signature, and is to be kept outside the beam area. 3)Question: If this is the case, the base temperature of the sample may not be able to reach below 300 mK per our past experience, and we just have quote whatever performance specs we feel comfortable with. Is that acceptable? Answer: Vendors are advised to quote the performance specifications that you are comfortable with. 4) Question: The solicitation document states that minimum sample space diameter should be 50mm. Samples for neutron scattering experiments are typically less than this so we just want to make certain of this specification? Answer: The specification of 50mm is correct. Although samples are generally much smaller than this, many of our sample cans, which go between different types of sample environment equipment, require this diameter. NIST does understand that this increases the required sample well diameter in the case of inserts with vacuum cans. 5) Question: The solicitation does not specify any wiring down to the sample region. Does NIST have any specific requirements in this regard that the vendor should know about? Are there any instrumentation wiring requirements to the sample stage? Answer: There is no specification or requirement for user wiring down to the sample position. There are no specific requirements for such user wiring, though provision for or inclusion of such may be seen as an added benefit above and beyond the base specifications. The only relevant requirement beyond the ordinary cryogenic concerns is that the wiring would not extend into the neutron beam area. THIS IS A COMBINED SYNOPSIS/SOLICITATION FOR COMMERCIAL ITEMS PREPARED IN ACCORDANCE WITH THE FORMAT IN FAR SUBPART 12.6-STREAMLINED PROCEDURES FOR EVALUATION AND SOLICITATION FOR COMMERCIAL ITEMS-AS SUPPLEMENTED WITH ADDITIONAL INFORMATION INCLUDED IN THIS NOTICE. THIS ANNOUNCEMENT CONSTITUTES THE ONLY SOLICITATION; QUOTATIONS ARE BEING REQUESTED, AND A WRITTEN SOLICITATION DOCUMENT WILL NOT BE ISSUED. This solicitation is a Request for Quotation (RFQ). The solicitation document and incorporated provisions and clauses are those in effect through Federal Acquisition Circular 01-13. ***The associated North American Industrial Classification System (NAICS) code for this procurement is 339111 with a small business size standard of 500 employees. All interested offerors may submit a quote. *** The National Institute of Standards and Technology (NIST), has a requirement for one (1) Top-loading helium-3 cryostat with the following contract options: option to purchase up to two essentially identical systems over the next two years, (2) contractor shall provide the option for NIST to purchase spare or replacement parts, as necessary, over the next two (2) years, (3) provide the option to purchase an extended warranty. All interested parties are invited to submit a quote for the following line items: LINE ITEM 0001: Quantity one (1) each - Top-loading helium-3 cryostat in accordance with the following requirements and specifications; the entire system shall include the cryostat with top-loading sample capability, temperature controller, liquid helium cryogen level sensor and indicator (if applicable), connecting hoses and cables. The system shall not include a vacuum pump for open-loop cooling with helium-4, as NIST shall provide this pump. NIST shall approve drawings before manufacture and shall be given a copy of line drawings (not all manufacturing drawings) for the system. Two (2) copies of the operating manual shall be included with every system. The offered system shall be based on either a liquid helium cryostat or a closed-cycle cryogen-free system. NOTE: THIS NOTICE WAS NOT POSTED TO FEDBIZOPPS.GOV ON THE DATE INDICATED IN THE NOTICE ITSELF (23-JUN-2003). IT ACTUALLY APPEARED OR REAPPEARED ON THE FEDBIZOPPS SYSTEM ON 26-AUG-2003. PLEASE CONTACT fbo.support@gsa.gov REGARDING THIS ISSUE.
- Web Link
-
Link to FedBizOpps document.
(http://www.eps.gov/spg/DOC/NIST/AcAsD/Reference-Number-03-856-3263/listing.html)
- Place of Performance
- Address: 100 Bureau Drive, Gaithersburg, MD
- Zip Code: 20899
- Zip Code: 20899
- Record
- SN00413186-F 20030828/030827084135 (fbodaily.com)
- Source
-
FedBizOpps.gov Link to This Notice
(may not be valid after Archive Date)
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