Regensburg 2019 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 63: Poster Session: Cryogenic Particle Detectors and Cryotechnique
TT 63.6: Poster
Donnerstag, 4. April 2019, 15:00–18:30, Poster D
MOCCA: a 4k-pixel molecule camera for the position and energy resolved detection of neutral molecule fragments — •Dennis Schulz1, Steffen Allgeier1, Christian Enss1, Andreas Fleischmann1, Lisa Gamer1, Loredana Gastaldo1, Julia Hauer1, Sebastian Kempf1, Sebastian Spaniol2, Oldřich Novotný2, 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 low-energy neutral molecule fragments. 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 incident particles on the detector, even with multiple particles hitting the detector simultaneously. Using different read-out techniques, MOCCAs 4096 pixel can be read out by using only 32 SQUID channels in total.
We present the most recent data from measurements of the MOCCA detector at 10 mK with a 6 keV photon source, demonstrating low cross-talk between rows and columns of the detector, the read-out principle and the energy resolution measured to be below 200 eV.