This device consists of three identical precision high-voltage power amplifiers for the symmetrical supply of a 3D quadrupole trap.

The connected trap is supplied by a combination of a 40× amplified AC voltage and a 4× amplified DC or low-frequency voltage. The AC voltage is used for storing electrically charged objects in the trap, the DC or low-frequency voltage is designed for gravity compensation of heavy objects and for electrical cooling.

Typical applications: Power supply of electrodynamic quadrupole traps for storing micro- and nanoparticles or heavy ions, for precise measurements of specific charge or for electrical cooling of stored particles

#Technical Data

Characteristics

• Precise high-voltage amplifier for electrodynamical quadrupole traps
• DC accuracy
• Extremely low temperature coefficient of amplification
• High bandwidth
• Low noise
• Temporarily short-circuit–proof

Input

• Input voltage: ±10 V max.
• Input impedance: 47 kΩ

Output

• Function:
  • V_Top = -40V_AC - 4V_DC
  • V_Mid = +40V_AC - 4V_M
  • V_Bot = -40V_AC + 4V_DC
• Output voltage: ±400 V min. (> 800 Vpp)
• Output current: ±50 mA max.
• Bandwidth:
  • AC input (±10%): 3.5 Hz –  >1 MHz
  • DC input (-3 dB): DC – 100 kHz
• Power bandwidth: > 100 kHz (200 kHz typ.)
• Output offset voltage: < 100 µV
• Drift of the output voltage: < 1 µV/K
• Noise (DC-10 MHz): 3 mV_eff (typ.)
• Accuracy of the amplification at low frequencies: < 200 ppm (100 ppm typ.)
• Temperature coefficient of the amplification at low frequencies: < 10 ppm/K (5 ppm/K typ.)

Monitor Output

• Attenuation: 1:40 of the output voltage
• Output current: ±20 mA max.
• Output offset voltage: < 100 µV
• Drift of the output voltage: < 25 µV/K (5 µV/K typ.)
• Accuracy of the attenuation at low frequencies: < 0.2% (0.1% typ.)
• Temperature coefficient of the attenuation at low frequencies: < 50 ppm/K (25 ppm/K typ.)
• Bandwidth (±10%): DC –  >1 MHz

Power Supply

• Rated voltage: 230 V or 115 V ±10%
• Rated frequency: 50/60 Hz

General

• 19" case
• Dimensions:
  • 2 U 19" plug-in case for mounting in a 19" cabinet (height: 88 mm, width: 483 mm)
  • Depth with heat sink without handles: 265 mm
• Weight: 6.8 kg

#Download

User Manual

#Additional Information

Shipment Contents

• Quadrupole power supply unit QPS400-3 in 19" case
• Line cord (universal IEC mains lead, length 1.8 m)
• Output cables (3 pcs. 93 Ω coaxial cable with 93 Ω BNC jacks, length 1.2 m each)
• Ground wire (flexible wire 1 mm² with 4 mm cable eyes, length 2 m)
• Material for mounting in a 19" cabinet (4 pcs. M6 screws with washers and cage nuts)
• User manual (see below)

Accessories