Abstract Space-based search coil (SC) magnetometers connected to preamplifiers have been used investigate magnetic field vectors of plasma waves from 100 mHz 10 kHz for understanding magnetospheric dynamics. However, flicker noise below several Hz typical degrades the equivalent induction (NEMI) SCs and affects probing Hz. In this study, we developed a chopper-stabilized preamplifier using appl...

Introduction: Highly parallel array coils constructed on curving formers [1-3] often contain relatively high inter-element inductive coupling. This is especially bad in flexible arrays where geometric decoupling from overlap or shared impedances is not possible for all positions of the flexing former. While preamplifier decoupling [4] is extremely useful in these situations, it is often insuffi...

We present two cryogenic Application Specific Integrated circuits (ASIC's) realized with a GaAs MESFET process. A single-channel differential or double-channel singleended voltage sensitive preamplifier for 4.2 K operation, to be used with bolometric detectors, was realized and tested. A very simple structure working as a unity gain buffer or as a transconductance amplifier, or even as a shapin...

H. K. Soltveit, J. Stachel, J. Wessels,P. Glässel, V. Catanescu, and I. Rusanov Physikalisches Institut, Heidelberg University The second prototype preamplifier-shaper for the ALICE-TPC Front-end Electronics has been tested at the University of Heidelberg and gone through an extensive full scale system test at CERN. In this report we briefly review the results of the performance of the second p...

We use seven-core Yb-doped large-mode-area (LMA) photonic crystal fiber (PCF) to demonstrate phase-locked amplification of 0.7 W, 1 MHz, 1.9 ps laser pulses delivered by an LMA-PCF-laser-LMA-PCF-preamplifier system. Compression of the 24 W output of the multicore LMA-PCF amplifier with a grating compressor yields 110 fs pulses with a peak power up to 150 MW.