Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 60: Cryogenic Detectors and Sensors, Refrigeration and Thermometry
TT 60.1: Vortrag
Mittwoch, 20. März 2024, 16:00–16:15, H 3025
MOCCA: a 4k-pixel molecule camera for the position and energy resolved detection of neutral molecule fragments — •Abdullah Özkara1, Christian Enss1, Andreas Fleischmann1, Lisa Gamer2, Loredana Gastaldo1, Daniel Hengstler1, Christopher Jakob2, Daniel Kreuzberger1, Ansgar Lowack1, Oldřich Novotny2, Andreas Reifenberger1, Dennis Schulz1, and Andreas Wolf2 — 1Heidelberg University — 2Max Planck Institute for Nuclear Physics, Heidelberg
The MOCCA detector is a 4k-pixel high-resolution molecule camera based on metallic magnetic calorimeters and read out with SQUIDs that is able to detect neutral molecule fragments with keV kinetic energies. It will be deployed at the Cryogenic Storage Ring CSR at the Max Planck Institute for Nuclear Physics in Heidelberg, a storage ring built to prepare and store molecular ions in their rotational and vibrational ground states, enabling studies on electron-ion interactions. To reconstruct the reaction kinematics, MOCCA measures the energy and position of the molecule fragments incidenting on the detector, even with multiple particles hitting the detector simultaneously.
We present an improved read-out scheme which uses a logarithmic decay time spacing. This makes it possible to use only 32 SQUID channels for the read-out of 4094 pixels of the detector. In addition, we compare the simulations of this read-out scheme to previous measurements.
Keywords: Metallic Magnetic Calorimeters; Low Temperature Detector