Data Sheet
Contents
1. Storage Temperature 55C to 105C Recommended noncondensing relative humidity Temperature a maor e max 10mT case must never exceed value Physical Dimensions approx 485mmx92mmx310mm o e e Typical performance charts Amplification a u 100 1000 10000 Freq kHz Gain flatness versus frequency amplitudes are averaged over all output channels A B C D 4 www stahl electronics com phone 49 6242 504882 fax 49 6242 504884 QUAD 1 10 Rotating Wall Drive User Manual Rev 2 1 25 PhaseAB e PhaseBC s PhaseCD 15 vy PhaseDA Phase Deviation from 90 degree 100 1000 10000 Frequency kHz Phase error vs frequency Graph shows deviation from the nominal 90 shift between output channels load on each channel 150pF 1MOhm measurement device oscilloscope TDS 210 Tektronix 1 10 1 08 A B B C 1 06 C D 1 04 D A amp fl 4 4 a f s S S t z Tal gt saa aval ee 1 00 nal K ge Pai 0 98 Amplitude Ratio kg a f z ja ne gt I ra u a 0 96 0 94 0 92 0 90 100 1000 10000 Freq KHz Amplitude mismatch vs frequency graph shows voltage ratios between output channels load on each channel 150pF 1MOhm measurement device oscilloscope TDS 210 Tektronix Device Variety Currently there are two2. f www stahl electronics com phone 49 6242 504882 fax 49 6242 504884 QUAD 1 10 Rotating Wall Drive User Manual Rev 2 1 This linear operation represents a considerable advantage over other ways of creating a rotating wall drive like using several individual function generators There is freedom to apply any signal in the nominal frequency and amplitude range in a direct way without changing the device configuration or reprogramming Also complex spectra like SWIFT functions sweeps artificial noise and multi tone signals may be applied Four output buffers drive the outputs at the rear side following the internal phase shift network and allow interfacing to an ion trap A 50 Ohm termination at the output lines is not recommended As an additional feature a common DC Offset Input rear side for DC Bias allows floating the 4 outputs up to 150 V on an additional DC level LED indicators on the front plate show the presence of a suitable input signal and the corresponding output voltage level gt ee ee ee E se i Fig 3 Graphical illustration of electric dipole quadrupole creation For an electric dipole connect the lines A B C D as shown in the left picture for a quadrupole as shown in the right picture Please observe the correct order while connecting the cables Shading in the pictures above illustrates the momentary electric potential dark low light high Elements on front and rear plate Fr
3. main members of the QUAD 1 X series device family Quad 1 5 Frequency Range 100kHz 5MHz Output Amplitude up to 20Vpp at low frequencies aso 1 5b Frequency Range 100kHz 5MHz Output Amplitude 20Vpp entire frequency range Quad 1 10 Quad 1 10 Frequency Range 80kHz 10MHz Output Amplitude 10Vpp entire frequency range Literature 1 X P Huang F Anderegg et al Phys Rev Lett 78 875 1997 2 E M Hollmann et al Phys Plasmas 7 2776 2000 3 Funakoshi et al Phys Rev A 76 012713 2007 5 www stahl electronics com phone 49 6242 504882 fax 49 6242 504884
4. ont Side Power Switch Input LED bargraph rotating phase indicator amp Power On LED indicating output amplitudes Fig 4 1 Front plate zoi Rotating Wall Drive QUAD 1 10 eocccces Precision Phase Shifter DC Offset Input Ventilation Fan 4 Outputs 90 shifted Mains Switch Fig 4 2 Rear plate 3 www stahl electronics com phone 49 6242 504882 fax 49 6242 504884 QUAD 1 10 Rotating Wall Drive User Manual Rev 2 1 Specifications Ext Power Supply AC input 230V ac 50HZ The power entry module is Typical Power Consumption 35W EMI RFI filtered Input BNC connector Input Impedance 60 Ohm Voltage Range Coupling Mode Frequency Range 80 kHz 10 MHz Outputs BNC connectors Functionality 4 Outputs 90 Phase Shifted Voltage Range 0 10Vpp nominally output load 150pF each channel max 12V pp overrange Amplitude mismatch f 80 kHz 10 MHz between outputs typ lt 0 25dB Phase mismatch max 5 between outputs typ 2 5 Input Output Voltage Gain nominally 5x 14 0dB f 80 kHz 10 MHz each Gain flatness channel 150pF loaded over freq range typ 0 5dB Nominal Freq Range 80kHz 10MHz output load 150pF each channel Rotating Phase min signal level typ 10MV pp f 80 kHz 10 MHz Indicator Wideband Output 1 7MV ms bandwidth 1kHz 6OMHz Noise any channel Ext DC Offset range 150Vpbc remark the applied external offset DC voltage is internally added to the ac output voltages
5. quency or function generator like SRS D5345 or comparable DC Offset lon Trap for electrode bias supply DC Fig 1 Ion trap setup including a QUAD 1 10 rotating wall drive Functional Principle and Block Diagram The following picture displays the internal structure After passing through an input amplifier which performs a frequency response correction an analog precision phase shift hybrid network creates 4 individual output lines having 90 of phase shift and equal amplitude In principle any signal at the input which lies within the nominal frequency and voltage range 80kHz to 1OMHz 0 2V p is suited for this application and will experience a 4 fold 90 phase shift The internal analog phase shift network acts as a linear device in the electrodynamical sense and does not rely on non linear effects or mixing processes For complex input signals having many frequency components in the spectrum all components will be phase shifted individually without interfering with other spectral components 10Vpp 80kHz 170MHz 90 Phase Shifted 2Vpp 80kHz 10MHz Precision ee s __ gt Phase Shift Hybride E Network Input Amplifier Down Scaling Heterodyning Micro Controller 7 Rotating Phase Indicator Output Level Indicator HUW UU monmnnooonne DC Offset for electrode bias supply DC Fig 2 Internal structure of the QUAD 1 10 device
6. us Stahl electronics com QUAD 1 10 Rotating Wall Drive for lon Compression in Traps 20 Jan 2009 Data Sheet Rev 2 2 Electronics for Science and Research Kellerweg 23 D 67582 Mettenheim Germany www stahl electronics com QUAD 1 10 Rotating Wall Drive User Manual Rev 2 1 General Information and Overview The QUAD 1 10 rotating wall drive is designed to create a rotating dipole or quadrupole electrical field inside a Penning Ion Trap The resulting electrodynamical rotating wall enables fast compression of big ion clouds see refs 1 2 3 after loaded into the trap The QUAD 1 10 represents a tool to handle a wide range of ions plasma rotation frequencies with respect to this novel application As indicated in the picture below an input signal for instance a sinusoidal wave will be converted into an amplified 4 channel signal All 4 channels have a phase relation of 90 and equal amplitude In case a 4 segmented ring electrode is connected a rotating dipole field is created whereas an 8 segmented ring will provide a rotating quadrupolar field The nominal frequency range in which a proper 90 phase shift from output to output is provided covers about 80kHz to 1OMHz at a nominal output amplitude range of OV to 10V The signal input is 50 Ohm compatible whereas the outputs do not require a 50 Ohm termination Quad 1 10 radial compression precision phase shift network fre
Download Pdf Manuals
Related Search