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VKS-8262P1-Spec

DESCRIPTION:

Pulsed Klystron Amplifier, 5.0 megawatt Peak, 45 kW Average, 2856 MHz, with Integral Cavities, Waveguide Output and Coaxial Input; Electromagnetically Focused, and Liquid Cooled

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產(chǎn)品詳情

PRELIMINARY PRODUCT SPECIFICATION

KLYSTRON TYPE VKS-8262P1

DESCRIPTION: Pulsed Klystron Amplifier, 5.0 megawatt Peak, 45 kW Average, 2856 MHz, with
Integral Cavities, Waveguide Output and Coaxial Input; Electromagnetically Focused, and Liquid Cooled

ABSOLUTE RATINGS (Notes 1 and 2)

Parameters:	Ef	If (Surge)	eb	epx	ik	pd	Pi	tk
Units:	Vac	A	kv	kv	adc	w	kW	minutes
Maximum:	8.0	54	135	30	102	500	120	- - -
Minimum:	- - -	- - -	- - -	- - -	- - -	- - -	- - -	15
Notes:	3, 4	- - -	5, 6, 7	- - -	8	9	- - -	- - -

Coolant		Coolant Flow
Parameters:	Inlet Pressure	Collector	Body	Window/Waveguide
Units:	psig	gpm	gpm	gpm
Maximum:	120	- - -	- - -	- - -
Minimum:	- - -	15	1.5	2
Notes:	- - -	10	10	10

	Coolant	Load	Hydrostatic	Output Waveguide
Parameters:	Inlet Temp.	VSWR	Pressure	Pressurization
Units:	°C	- - -	psig	psig
Maximum:	50	1.2:1	150	35
Minimum:	10	- - -	- - -	25
Notes:	- - -	12	- - -	13

Parameters:	tp (k)	tp (rf)	Du (rf)	Frequency	Magnet Current
Units:	μsec	μsec	- - -	MHz	Adc
Maximum:	18	16.3	0.010	2858	40
Minimum:	- - -	- - -	- - -	2854	- - -
Notes:	11	- - -	- - -	14	- - -

DESIGN CHARACTERISTICS

Outline Drawing: 501566	Cooling: Liquid; Notes 3 and 10
Tuning: Fixed	Ground: Klystron Body
Mounting Position: Vertical, gun down	Ion Pump: Note 16
Dimensions and Base: Special; see Outline Drawing 501566, latest revision	Operation: Cathode Pulsed
RF Input Connector: Mates with Type N Coaxial Plug UG-21 E/U, or equivalent	Cathode: Impregnated Tungsten, Unipotential
RF Output Connector: Mates with WR-284 Waveguide Flange, Plain; Note 15	Focusing: CPI Electromagnet (Solenoid) VYW-8262; Note 17
	X-ray Shielding: Note 18

GENERAL

Unless otherwise required as a line item in the purchase order or contract, only Quality Conformance Inspection, Part 1 (normal production testing) shall be performed.

Requirement	Conditions	Symbol	Min	Max	Units
Marking	See Outline Drawing 501566, latest revision	- - -	- - -	- - -	- - -
Packaging	CPI Standard Commercial Transport	- - -	- - -	- - -	- - -

QUALIFICATION TESTING (To be performed only when specified in the Purchase Order or Contract)

Test	Conditions	Symbol	Min	Max	Units
Weight	Klystron	- - -	- - -	250	lb
Shock and Vibration	Note 19	- - -	- - -	- - -	- - -
Load VSWR	Note 12	- - -	- - -	- - -	- - -
Capacitance	Anode to Cathode; Note 20	Cka	- - -	35	pF

QUALITY CONFORMANCE INSPECTION, PART 1 (100% Production Testing)

Test	Conditions	Symbol	Min	Max	Units
Vacuum Check	No Operating Voltages for 24 Hours VacIon ? Pump Reading t = 120 seconds	- - -	- - -	1	μA
Hydrostatic Pressure, Body and Collector	No Operating Voltages P = 150 psig water t = 15 minutes	- - -	No visible leaks and no damage		- - -
Heater Current	Ef = NPV; Note 3	If	20	28	A
Emission	Cathode Current; Note 21	Δik/ik	- - -	2	%
Beam Current	Eb = NPV Power Output, except Pd = 0	ib	- - -	92	a
Pressure Drop, Collector	Water Flow = 15 gpm	ΔPres	- - -	50	psi
Pressure Drop, Window/Waveguide	Water Flow = 2 gpm	ΔPres	- - -	50	psi
Body Coolant Flow	ΔPres = 50 psi	Fb	1.5	- - -	gpm
Power Output (1)	Ef = NPV Imag = NPV eb = 125 kv, max. F0 = 2856 MHz; Note 22 Pd = 200 W (max.);Note 23 Load VSWR = 1.20:1(max.) tp (rf) = 16.3 μsec Du (rf) = 0.009; Note 24	po	5.0	- - -	Mw

QUALITY CONFORMANCE INSPECTION, PART 1 (Continued)

Test	Conditions	Symbol	Min	Max	Units
Power Output (2)	Ef = NPV Imag = NPV eb = 125 kv, max. F0 = 2856 MHz; Note 22 Pd = 200 W (max.);Note 23 Load VSWR = 1.20:1(max.) tp (rf) = 16.3 μsec Du (rf) = 0.009; Note 24	po	4.0	- - -	Mw
Power Output (3)	Ef = NPV Imag = NPV eb = 125 kv, max. F0 = 2856 MHz; Note 22 Pd = 200 W (max.);Note 23 Load VSWR = 1.20:1(max.) tp (rf) = 16.3 μsec Du (rf) = 0.009; Note 24	po	3.0	- - -	Mw
Dimensions	See Outline Drawing 501566, latest revision	- - -	- - -	- - -	- - -
Pressurization	35 psig; Note 25	- - -	No Leakage		- - -
X-radiation	Power Output (1); 3 feet from klystron (Note 18)	XR	- - -	3	mR/hr

NOTES

Note 1: The absolute ratings are limiting values that are not to be exceeded under any service conditions, or the serviceability of any individual unit may be impaired. Design values for systems should include a safety factor to maintain operation within ratings under voltage
and environmental variations. A single rating may be the limitation, and simultaneous
operation at another rating may not be possible. The Life Warranty is predicated on product
operation under the specified test conditions given in this Product Specification.
Note 2: All voltages except the heater voltage are referenced to the cathode.

Note 3: It is recommended that a current-regulated power supply be used when applying heater power to a klystron. The power-supply current should be set to NPV and the heater voltage allowed to rise to that value. Once the heater voltage NPV is reached, it shall be maintained for at least 15 minutes prior to the application of beam voltage. Body coolant flow must be operating whenever heater power is applied for an extended period of time. Interlocks in the liquid-coolant system shall prevent the application of heater voltage unless the liquid-coolant flow in the body is at or above the specified minimum flow rate. The electron gun must be immersed in oil or air cooled at an air-flow rate sufficient to maintain the gun base plate at a temperature below 60°C whenever heater power is applied. If a dc heater supply is utilized,the positive terminal of the supply must be connected to the heater-cathode terminal.
Note 4: Interlocks shall be provided to prevent application of beam voltage unless the heater voltage is within ±5 percent of NPV and has been applied for the period of time specified in Note 3.
Note 5: The electron gun insulators shall be operated in an insulating oil such as Univolt 35 or equivalent.
Note 6: Interlocks shall be provided to prevent the application of beam voltage greater than
5 percent above the nameplate value and prevent the absolute ratings from being exceeded.
Note 7: Maximum operating voltage for each klystron shall be limited to its nameplate value as specified in the accompanying Test Performance Sheet(s).
Note 8: Interlocks shall be provided to prevent the cathode (beam) current from exceeding values greater than 10 percent above normal operating values and prevent the Absolute Ratings from being exceeded.
Note 9:

a. The klystron shall not be damaged when operated at maximum rated rf drive when the beam voltage is removed.
b. The klystron shall not be damaged when operated at operating beam voltage when rf
drive is removed.
Note 10: Distilled water (minimum resistivity of 1 megohm-cm) shall be used along with a filter in the cooling system to limit particle size to 100 microns.
Note 11: The beam voltage pulse width maximum is 18 microseconds at the 70-percent level.
Note 12: The load VSWR must not exceed 1.2:1 in the operating range for rated performance. A VSWR up to 1.5:1 will not cause damage to the klystron.

Note 13: The klystron may be operated at rated output power provided the output waveguide is pressurized to at least 25 psig with a high-dielectric gas such as nitrogen, dry air, or sulfur hexafluoride.
Note 14: The frequency is set at the factory and is specified as 2856 MHz.

Note 15: A flexible length of waveguide must be provided between the klystron output flange and load or output waveguide system to prevent excessive forces from being applied to the output flange.
Note 16: One 2- l/ s VacIon pump shall be an integral part of each klystron. This ion pump shall operate at an open-circuit voltage of +3500 Vdc ± 300 Vdc from a high-impedance power supply capable of delivering 1.5 milliamperes. For normal klystron operation, the ion-pump current shall be less than 10 μAdc.
Note 17: Interlocks shall be provided to prevent application of beam voltage unless solenoid coil currents are within ±5 percent of the specified values and all coolants are at normal flow. The magnet current must be set to the value on the klystron Test Performance Sheet.
Note 18: It is the responsibility of the klystron manufacturer to provide sufficient X-ray shielding to reduce radiation to 3 mR/hr at a distance of 3 feet from the surface of any integral part of the klystron above the plane of the bottom of the focusing-solenoid base plate, except for a cone-shaped region whose axis is colinear with the output waveguide axis when the klystron is operated in the proper focusing solenoid at the rated operating conditions for the Power Output test conditions (except for the interface areas normal to the axis of the coolant fittings and the output waveguide flange, which shall be the responsibility of the equipment
manufacturer. It is the responsibility of the equipment manufacturer to provide X-ray shielding for the radiation below the plane of the bottom of the focusing-solenoid base plate. It is also the responsibility of the equipment manufacturer to provide any additional X-ray shielding necessary to meet all required safety standards when the klystron is operated in the manufacturer's equipment. The klystron manufacturer shall have no responsibility for excess radiation or radiation leakage arising from alterations to the klystron and/or the focusing solenoid or from operation beyond the specified operating parameters necessary to achieve the Power Output test condition.
Note 19: The klystron shall be capable of withstanding transportation over rough roads by truck when suitably crated.
Note 20: The anode-to-cathode capacitance shall be measured in air without heater and cathodevoltage leads connected.
Note 21: The filament voltage is decreased from NPV to 5 percent less than NPV, and the cathode emission is allowed to stabilize. The percent change in the peak cathode current shall not exceed the value specified.
Note 22: When operating under power-output conditions, power output shall be measured at 2856 MHz. Power output shall be within the limits specified. Drive power shall be 200 watts
or less under all conditions. The beam voltage and drive power shall be recorded.
Note 23: Drive power is defined as the power incident at the rf input coupler of the klystron.
Note 24: Power-output test conditions may use combinations of tp (video), tp (rf), and pulse repetition rate (prr) other than these specified to accomplish the required duty cycle for factory testing.
Note 25: The rf output transmission line is pressurized to 35 psig for 15 minutes. At the end of 15 minutes, the pressure must be between 30 psig minimum and 35 psig maximum.