Pulse cable

SLAC National Accelerator Laboratory is operated by Stanford University for the Department of Energy.  As a management and operating contractor, subcontracts awarded by the Laboratory are not Federal procurements, and are not directly subject to the Federal Acquisition Regulations in 48 CFR. Nonetheless, certain Federal laws, Executive Orders, and regulations may affect our DOE approved purchasing system, as required by statute, regulation, or contract terms and conditions.

SLAC National Accelerator Laboratory is operated by Stanford University for the Department of Energy. As a management and operating contractor, subcontracts awarded by the Laboratory are not Federal procurements, and are not directly subject to the Federal Acquisition Regulations in 48 CFR. Nonetheless, certain Federal laws, Executive Orders, and regulations may affect our DOE approved purchasing system, as required by statute, regulation, or contract terms and conditions

This is a formal request for quotation from Procurement as requirement has been assigned to me as a buyer.

**Please do not contact the requester regarding the item(s) in this request while we are in the process of bidding to maintain the integrity of this solicitation.

Please review the quote and provide your best and final offer for both price and lead-time.

Kindly also have the quotation revised to today’s date and address the quote to my attention.

The follow has been attached for you to complete and review:

1. (BAA) Buy American Act Certification
2. Representations & Certifications Rider
3. Confirm Attached SLAC terms are accepted: FP Commercial Supplies-Services T&Cs (August 2023)
4. SOW

Required item(s) listed below:

Qty: 1000 meters – high power triaxile pulse cable 

Quote is for product only; no on-site services permitted.

Source selection will be based on Lowest Price and Technically Acceptable Method (LPTA).

Technical evaluation criteria are as follows:

The cable shall meet the following requirements:

Electrical:

1. Characteristic Impedance: 14 ohm (nominal).

B. Pulse Duration:

3.7 μS (maximum at the 70% amplitude levels).

C. Pulse Rise Time:

0.5 μS (measured between 5% and 95% amplitude levels).

 D. Pulse Fall Time:

0.5 μS (measured between 95% and 5% amplitude levels).

E. Pulse Flat Top Duration: 2.8 μS (measured between 100% amplitude levels).

F. Pulse Voltage:

22.8 kV, nominal (measured between 110% amplitude levels).

G. Current

(1) Peak Pulse Current:

(2) Equivalent RMS Current: 3500 amperes (measured at 100% amplitude levels).

130 amperes maximum.

H. Pulse Repetition Rate

60 to 360 pulses per second.

I. Attenuation: 2 db max. (at 10MHz) per 100 feet.

J. Conductor DC Resistance: Maximum per 100 feet: Inner conductor 0.027 ohms at 20ºC First shield 0.027 ohms at 20ºC

Second shield 0.029 ohms at 20ºC

K. Voltage Withstanding Test Voltage:

100 kV DC. (inner conductor to first shield).

20kV DC. (first shield to second shield).

L. Insulation Resistance (Center Conductor to First Shield):

Shall be better than 2000 megohms per 1000 feet.

M. Corona Starting Voltage:

18kV RMS 60Hz (inner conductor to first shield).

N. The load may frequently develop faults. The fault characteristics may be as follows:

(1) Peak current when load appears as short: 6000 amperes, maximum for 3.7μS.

(2) Peak Voltage when load appears as an open circuit: 50kV, maximum for 100ms.

(3) The maximum number of faults for either or a combination of above faults: 15 per 30 seconds: 10,000 per year

Mechanical:

The cable shall meet the following requirements:

A. The cable materials and general location of the conductors and dielectric shall be in accordance with Figure 1.

B.  The cable shall have a minimum bend radius of 14 inches.

Identification and Marking:

1. The cable identification shall be marked on the jacket of the cable at least every three feet and shall not permanently ident, deform or otherwise damage the jacket or outer conductor.

B.

Identification shall contain the following minimum marking:

(1) Manufacturer’s name

(2) Manufacturer's serial number

Environmental Conditions

The pulse cable shall meet the requirements of the specification in the following environment:

A. Ambient temperature: 0-65ºC

B. Cooling: Natural air convection

C. Humidity (RH):

50% (maximum) at 65ºC

80% (maximum) at 25ºC

D. Barometric Pressure: 28 to 31 inches of mercury

Standards and Calibration

All subcontractor’s measuring and control equipment used during the performance of acceptance type testing shall bear evidence stating the date of calibration, next calibration date and laboratory that performed the calibration.

Calibrating laboratories must be able to furnish certified records upon request stating that their standards are traceable to the National Bureau of Standards. Certification is not required for equipment standards not yet established by the National Bureau Standards.

The subcontractor shall record all pertinent inspection data and observations on an inspection sheet affixed with the Subcontractor’s (or his representative’s) signature.

The Subcontractor shall, as minimum, subject the cable to the following inspections and tests: (Note: Unless otherwise specified, 100% of the cable shall be tested. A separate test report shall be prepared for each length).

A.

Visual and Mechanical Examination: The cable shall be examined to verify that the design, construction, physical dimensions, marking and workmanship are in accordance with the applicable requirements of the specification.

B.

DC Resistance: The DC resistance of the cable conductors shall be determined by means of a suitable bridge circuit. The requirements of paragraph 3.1.J shall be met.

C.

Dielectric Strength: The cable shall be subjected to the test voltage specified in paragraph 3.1.K of this specification. In each case, the test voltage shall be applied for a minimum time of thirty (30) minutes. The applied voltage shall be increased gradually until the required test voltage is reached or until breakdown occurs. The applied voltage shall be increased as uniformly as possible so that 100 percent of the test voltage is reached in not less than 10 seconds and not more than 60 seconds. This test may be performed before jacketing. Any cable that fails shall be cut for a length of 3 feet on each side of the failure. The remaining length shall then be again subjected to this test for 30 minutes.

D.

Insulation Resistance: The cable shall be tested per paragraph 4.8.5 of MIL-DTL-17J. The requirements of paragraph 3.1 of this specification shall be met.

E.

Corona: A test sample 12 feet in length shall be cut from each length of cable manufactured and tested per applicable method described in paragraph 4.8.6 of MIL-DTL-17J. The following additional conditions shall apply: A minimum of one complete turn (360º) of the cable test sample shall be wrapped around a 28 inch diameter mandrel for this test. The cable shall meet the requirements of paragraph 3.1.M of this specification.

F.

Characteristic Impedance: The cable characteristic impedance shall be tested per paragraph 4.8.7 of MIL-DTL-17J and shall meet the requirements of paragraph 3.1.A of this specification.

G.

Bending Torque: The torque required to bend a cable to the minimum bend radius shall not exceed 35 foot lbs, at 25ºC.

Preservation and Packaging –

The cable shall be adequately protected against damage which may occur during shipping by common carrier and against possible deterioration that could be occur during prolonged storage. Reels shall be cleared.

Please provide a price and lead time quotation by COB 12/20/2025. (15 days)

Send quote to AnthonyC@SLAC.stanford.edu.

The bid closing date for this requirement is 12/20/2025.

Is there any room for additional discount such as for Academic, ICPT, GSA, or Government Institutions?

If possible, please provide a link to your webpage for published price list to substantiate for the prices quoted.

• Buy American Act Certification (BAA) applies to awards that are over $10,000.
• Representations & Certifications Rider is required. Once completed the Reps and Certs is valid for one year until renewal. If you have already completed one within the year please disregard. Otherwise, please complete and return.
• All subcontractors are required to register in the System for Award Management (www.sam.gov).
• The resulting purchase order will be issued on a fixed price basis. SLAC National Accelerator Laboratory Terms and Conditions for Fixed Price Commercial Supplies and Services (Rev. August 2023) will be made a part of the resulting order.
• Payment Terms will be NET-30
• Freight terms will be FOB Destination Prepaid and Add
• For foreign vendors: Shipment will be made CIP SLAC, Menlo Park, and Duty Unpaid

You are requested to mark and identify proprietary/confidential information provided in response to the solicitation.

Contact me directly with any questions.

Kind regards,

Anthony Chin

Procurement Commodities Team

contact@example.gov

SLAC National Accelerator Laboratory

2575 Sand Hill Road

Menlo Park, CA 94025