ELOG AIDA

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

AIDA

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Entry time:	Sat Mar 29 12:29:04 2025
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<p> <table width="98%" align="center" cellspacing="1" style="border:1px solid #486090;"> <tbody> <tr> <td cellpadding="3px" style="background-color:#486090; font-weidht:bold; color:white;">Quote:</td></tr> <tr> <td cellpadding="10px" style="background-color:#FFFFB0;"><p>We noticed a peculiar feature in the time-stamp synchronization monitor. The spectra of timestamp difference between pairs of DAQ systems show, for all possible pair combinations, a peak at Delta(ts)= 65535 = 2*15</p> <p>This corresponds to a difference of 2.6 ms (for 25MHz correlation clock). See the attachments taken ~23:00 of Nov 28th.</p> <p>We performed the AIDA system-wide checks (no errors) and a timestamp reset, but the second peak at 65K is still there (we also checked that there is no peak at 265K, at least in a short run period).</p> <p>We also observed a double peak for timestam-differences close to zero, which we interpret as good correlations (attachment 2). Note, however, that this double peak became much supprese around midnight (see attachment 6 and 7).</p> <p>From analysis of ion (BigRIPS) and implant (AIDA) correlations we have some confidence that these two DAQs are synchronized; see entry https://elog.ph.ed.ac.uk/AIDA/492 where we identify an implant for 20% ofions at F11 (and with an implantatin profile that, for example, is consistent with changes to the degrader configuration)</p> <p> </p></td> </tr> </tbody> </table> </p><p> </p> Encoding: HTML ELCode plain Suppress Email notification

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