Magic Nipple0 pages

Magical Nipple
To improve the Gauge Performance
Features
1. Reduce outgassing from bare BA gauge
1/8 of SS nipple
2. Improvement in ultimate pressure
Closer to true pressure measurement
MNEX
3. Filament power, save 1/3
Lower emissivity wall
4. Low beryllium copper alloy
0.2% Be high conductivity copper
5. Passivated Cu surface
No degradation at atmosphere
6. NiP plating on edge & outside
• Insert and fix the BA or Extractor gauge
Available 300℃ baking temperature
into the Magical Nipple
7. Cu gasket sealing
• Attach the Magic Nipple with gauge on the
Similar thermal expansion to stainless steel
vacuum chamber
MNBA

• Realized the low outgassing from a gauge

Nipple material vs Outgassing speed * (measured by VacLab)
Outgassing speed

Magic Nipple

Stainless steel Nipple

MNBA (BA gauge) 1/4
**
MNEX (EX gauge) (1/8)

2.1×10-11 Pa・m3/s

8.9×10-11 Pa・m3/s

4.5×10-12 Pa・m3/s

3.9×10-11 Pa・m3/s

* 200℃ 2 hours baking and measured after 18 hours pumping (Throughput method)
** ESD noise affect to the BA gauge outgassing speed reduction limit to 1/4
(Outgassing reduction performance is same as EX gauge)
Reference: JVST.A11(1993)432, JVST.A22(2004)181
IDφ39mm

ICF70 flange
IDφ39mm
Height 70mm
Height 40mm

MNBA

MNEX

Outgassing performance will not be improved except on bare Ion gauge!

Made & sold by VacLab Inc.