Cavity Body for Accelerating Cavities

Product Specifications

Technical details and manufacturing context for Cavity Body

Definition

The cavity body is the primary structural component of an accelerating cavity, typically a precisely machined metallic enclosure that defines the resonant electromagnetic field geometry. It serves as the vacuum vessel and electromagnetic resonator, providing the necessary boundary conditions for standing wave patterns that transfer energy to charged particles. Within accelerating cavities, the cavity body's interior surface geometry directly determines the operating frequency, field distribution, and shunt impedance of the cavity. The cavity body is manufactured from materials such as high-purity copper, niobium (for superconducting cavities), or stainless steel, selected for their electrical conductivity, thermal properties, and vacuum compatibility. Key parameters include operating temperature (-40–85 °C), cavity volume (0.5–2.0 L), wall thickness (5–10 mm), surface roughness (0.8–1.6 μm Ra per ISO 4287), flatness (0.05–0.1 mm per ISO 1101), RF frequency range (500–3000 MHz), quality factor (10,000–30,000), material grade (OFHC Cu per ASTM B170), weight (10–50 kg), IP rating (IP54–IP65 per IEC 60529), and leak rate (1e-9–1e-10 Pa·m³/s per ISO 21360). These values are reference ranges and must be verified for the specific model and application. The cavity body is a component used in particle accelerators and related equipment within the computer, electronic, and optical product manufacturing industry. It is essential for establishing the resonant electromagnetic environment that accelerates charged particles. Proper selection and verification of the cavity body involve confirming that its dimensions, materials, and performance characteristics meet the requirements of the intended accelerator system. Maintenance signals include changes in RF performance, vacuum leaks, or physical damage. Failure boundaries are defined by material degradation, loss of vacuum integrity, or deviation from specified tolerances.

Working Principle

The cavity body acts as a resonant electromagnetic cavity where standing waves are established at specific frequencies. When RF power is coupled into the cavity, electromagnetic fields oscillate within the precisely shaped interior volume. Charged particles passing through the cavity experience acceleration from the longitudinal electric field components. The body's geometry and material properties determine the resonant frequency, quality factor (Q), and field uniformity.

Common Materials

High-purity copper, Niobium (for superconducting cavities), Stainless steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Temperature	-40–85 °C	Exceeding range may cause material degradation
Cavity Volume	0.5–2.0 L	Determines RF field capacity
Wall Thickness	5–10 mm	Affects mechanical strength and thermal conductivity
Surface Roughness	0.8–1.6 μm Ra	Critical for RF performanceISO 4287
Flatness	0.05–0.1 mm	Ensures proper sealingISO 1101
RF Frequency Range	500–3000 MHz	Design target for cavity resonance
Quality Factor (Q)	10000–30000	Higher Q reduces power loss
Material Grade	OFHC Cu	High conductivity and vacuum compatibilityASTM B170
Weight	10–50 kg	Affects handling and mounting
IP Rating	IP54–IP65	Protects against dust and water ingressIEC 60529
Leak Rate	1e-9–1e-10 Pa·m³/s	Required for vacuum operationISO 21360

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Beam Pipe Ports Part
Provide entry and exit points for particle beams

Material: Same as cavity body material
Coupling Ports Part
Allow RF power input/output and field monitoring

Material: Same as cavity body material
Tuning Mechanisms
Enable frequency adjustment and field stabilization

Material: Stainless steel or specialized alloys
Cavity Structure
The precisely shaped body itself: its interior volume sets the resonant frequency and Q.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Accelerating Cavities

View system integration details

Resonator Cavity

View system integration details

Manufacturers of Cavity Body

Manufacturer profiles associated with Cavity Body.

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Frequently Asked Questions

What materials are commonly used for cavity bodies?

Common materials include high-purity copper, niobium for superconducting cavities, and stainless steel. The choice depends on the application's requirements for conductivity, thermal performance, and vacuum compatibility.

What is the typical operating pressure range?

Always verify the exact range for your specific model.

How does surface roughness affect performance?

Surface roughness influences RF performance. The reference range is 0.8–1.6 μm Ra (ISO 4287). Smoother surfaces generally reduce losses, but the required value depends on the application.

What standards are relevant for verification?

Relevant standards include ISO 4287 for surface roughness, ISO 1101 for flatness, ASTM B170 for material grade, IEC 60529 for IP rating, and ISO 21360 for leak rate. These are references for procurement and verification, not proof of certification.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 10 bar (operating), 15 bar (burst)
other spec:	Vacuum rating: ≤10^-6 mbar, RF power handling: ≤50 MW, Flow rate: 0-100 L/min (coolant)
temperature:	-40°C to 150°C (operating), -196°C to 200°C (extreme)

Cavity Body

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards