Allectra has introduced the new KAP301 range of exclusive radiation-resistant high-temperature Kapton insulated wires. These wires are an alternative for the 311-KAPM-RAD range and deliver higher voltages.
At present, they are available in the form of multistrand wires with diameters of 0.6 mm (301-KAPM-060), 0.35 mm (301-KAPM-035), and 0.25 mm (301-KAPM-025), as well as coaxial wires, twisted pair cables, and thermocouple wires, type K and N.
Diamond Light Source, UK has successfully tested these wires under an electron beam to examine their vacuum compatibility during radiation exposure and will now use them in vacuum.
Specifications
| . |
. |
| Vacuum |
UHV (<10-10 mbar) |
| Radiation resistance |
109 Rad = 107 Gy |
| Temperature range |
4 K...300 °C |
| Construction |
Wrapped Wire insulation, Kapton |
| Conductor |
Silver-plated copper, multistrand
0.25 mm: 7 x 0.08 mm ø (same for Coax)
0.35 mm: 7 x 0.12 mm ø
0.6 mm: 19 x 0.127 mm ø
0.25 mm: thermocouple wires |
| OD (Typical values) |
0.25 mm conductor: 0.47 mm
0.35 mm conductor: 0.58 mm
0.6 mm conductor: 0.74 mm
0.9 mm coaxial 0.25 mm core wire
0.95 mm thermocouple wires (K/N) |
| Minimum bend radius |
7.5 x diameter (long term) |
| Voltage rating |
7.5 KV DC in vacuum |
| Disruptive voltage |
>14 KV DC |
These cables are available on spools with 5 m/10 m/50 m/100 m, or custom lengths.
27 GHz SMA Feedthrough for UHV Applications
242-SMAD27G-C16 (and other flange sizes)
Allectra currently provides a double-sided SMA feedthrough that has an extended frequency range of up to 27 GHz for UHV. These “Super-SMA” versions are an economical substitute to the SMA-K or 2.92 mm types, if frequencies more than 27 GHz are not required. The stainless steel housing comes with gold-plated center contact. Up to four of these feedthroughs can be fixed to a DN40CF flange. The smallest mounting flange is 16 CF.
Specifications
| . |
. |
| Type |
Super-SMA with extended frequency range |
| Impedance |
50 Ohm |
| Frequency range |
0–27 GHz |
| Standing wave ratio (VSWR) |
Maximum of 1.25 at 27 GHz |
| Insertion loss |
typ. 0.15 x √f (GHz) db |
| Maximum voltage |
500 V |
| Temperature |
-55 °C to 180 °C (CF flanges) |
| Vacuum leak rate |
<5 x 10-10 mbar l/second (He) |
| Materials |
Glass, Stainless Steel, BeCu, PTFE, FeNi |
| Plating |
Inner contact gold plated |
| Seal |
Welded all-metal seal |