Parameters of

 

Inductive Pick-Up (IPU) and Active Hybrid Circuit (AHC )

 

 

IPU

Electrical centre position error

< 0.1 mm

Range of linearity to 50 mm

5 mm

Transformer load RS / turn number n

7 W / 30

LS /LD inductances / ferrite mr

5 mH / 70 nH / 100

Primary winding resistance RP

4 mW

Primary parasitic resistance RC

0.5 mW

Transresistance VS /IB

0.1 W

IPU electrode high cut-off frequency

300 MHz

IPU S low cut-off frequency

150 Hz

IPU D low cut-off (without the slope)

10 kHz

Titanium coating end-to-end resistance

10 W (i.e. 15 W/)

Coupling imp. ZC @ 1.5 / 3 GHz

9 + j2 / 10  j0.5 W

Beam pipe / electrode inner diameter

40 mm / 49 mm

Length with bellows / body diameter

168 mm / 130 mm

IPU

+

AHC

Position sensitivity

10 mm D/S

Overall S signal bandwidth

300 Hz  250 MHz

Overall D bandwidth (without slope)

800 Hz  150 MHz

D equivalent noise @ IB 3A / 0.3A

< 5 mmRMS / < 50 mmRMS

S equivalent noise, low / high gain

< 3 mARMS / < 3 mARMS

S signal amplifier gain low / high

5 / 25 dB

D signal amplifier gain low / high

15 / 35 dB

AHC CMMR @ 1 / 100 MHz

> 60 dB / > 50 dB

 

Calibration current pulse

300 mA 0.1 %, 150 ms

 

 

(c) M.Gasior, AB/BDI/PI. Last updated: 16/07/03.