the CCC and could see that, for an unknown reason, there were a number of parameters that were not
used in the SFTPRO cycle that showed up in the Online check. As a temporary solution, they proposed
that we cloned the cycle so that it could be saved into reference for safety, then we could do a PPM
copy from CNGS knowing we could recover the situation. They are investigating the source of the
problem.
To continue with the FINEMET cavity tests, a 160MeV Flat Cycle was cloned and then set up so as to
have R4 available as well as R2.
At around 01H00 the BT.BHZ10 dropped out and would not be reset, so the operator went to
investigate, but needed the PiPO to rearm the circuit breaker.
The BT2.SMV20 was noted to be in local and have the wrong aqn value compared to the command. The
operator switched back to remote and after a little re-training the septum started to behave once again.
The beams were back by 02H40.
The TOF user was suffering from instability in injected intensity, so Jose worked to stabilize it.
Saturday 5/5/12
During the afternoon the BI3.QNO60 started to drop out and was reluctant to stay on. By 16H30 the
PiPO was on site to take a look and by 19H30 had changed to the spare power supply and R3 was back in
order.
Jose observed that with only R3 beam extracted there was a large reflected signal on BT.UES30 & 40,
which put into question how reliable the ejection trajectory display could be. This would also prevent
the use of the automatic beam steering program.
After the SPS commented upon the intensity fluctuations they had observed for CNGS, Jose increased
the voltage on LI.CBU02 in LINAC2, as he suspected this to be the source of the problem.
Sunday 6/5/12
At 06H45 the Linac Supervisor was called in to investigate the intensity fluctuations from the LINAC, as
LHC would soon be needing to fill. She suspected the matching between the RFQ and Tank 1 of the
Linac, and after an hour she had improved the stability.
The MD beam for the PS on cycle MD_BEAM4PS_PSB had been requested on Friday but was not within
spec when re-loaded, so Abdel re-loaded the cycle and started to bring it back to the required
specification.
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern