{'fraction_non_alphanumeric': 0.02616279069767442, 'fraction_numerical': 0.01065891472868217, 'mean_word_length': 4.49468085106383, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
The New Beam Position Measurement System for the Desy Synchrotron

In the DESY synchrotron a new beam position measurement system has been installed to provide a fast, reliable and precise determination of the closed orbit. The Q-value (6.2 ... 6.3) of the synchrotron leads to a minimum of 25 stations to satisfy that requirement. Due to lack of available space in the straight sections, very short pick-up electrodes of permalloy-taped ring cores were chosen for the technical solution. The low average beam current in the synchrotron operating in the single bunch mode, requires a very sensitive system. This led to a narrow-band resonant device tuned to the revolution frequency of 947 ± 60 kHz followed by a "slow scan"-processor. For initial operation the output data are transferred to a printer. Later on a link to a computer will be established to provide a fast display of the measured closed orbit, and data for a process computer orbit correction program. First measurements and results with the new system are reported.