lhc-exp-coms@cern.ch - mailing list - Simba
Some telegrams will be re-published over DIP (modes, beam type, energy, safe machine parameters)
A full description and documentation of what is published by the LHC machine for the experiments over DIP can now be found at:
http://wikis.cern.ch/display/expcomm/Home
(See aslo LEADE Twiki) and http://cern.ch/ts-dep-lea-int/dataexchange-DIP.htm
start DIP browser DIP Name Server Status
Data published by LSA database
Machine will publish:
| DIP | Timing | Status | Comment | |
| Beam Mode | OK | OK | Dip pulls from LSA | Published as String. Original source LSA |
| Accelerator Mode | OK | OK | Dip pulls from LSA | Published as string. Original source LSA |
| Fill Number | OK | OK | Dip pulls from Timing | Timing updated by LSA |
| Bunch Configuration | Coming soon | |||
| Handshakes | Exp values grabbed by Kris and published over CMW.. Machine values pushed from LSA database to DIP Experiments publish reply to 1. We need three different publications, one for INJECTION, another for DUMP and another for ADJUST. 2. Within each publication the field "name" should contain the PVSS default called "__DIP_DEFAULT__" 3. The handshake property should be written like "Handshake", i.e. capital H. 4. LHCf and LHCb should have capital f and capital b (but this is already solved). |
|||
| Energy | OK | OK | Generated as SBP, published to timing and then to DIP | In units of xxx MeV |
| INTERLOCK | experiment publishes to dip/LHCf/LHC/Interlock/beam_injection_accept |
|||
| SPS Probe Beam Flag Threshold | ||||
| Safe Machine Parameters |
| Provider | System | Frequency | |
| BI | Luminosity |
1 Hz | |
| BI | Scintillators | ||
| LSA | Luminosity scan results | On change | |
| BI | Beam Intensity, Beam lifetime |
1 Hz | |
| BI | Bunch intensities including statellites | 1 Hz | |
| BI | Beam Loss Monitors - exp local |
1 Hz | See here for BLM naming conventions etc |
| BI | BPM - local |
1 Hz | |
| BI | BPM - IP angle and position | 1 Hz | |
| BI | Abort Gap | 1 Hz | |
| BI | Bunch length - synch light | 1 Hz | |
| BI | Beam size - sync light | 0.1 Hz | |
| EA | Machine radiation monitors | 1 Hz | |
| RP | RAMSES radiation monitors | < 0.1 Hz | |
| LSA | Collimators settings, read positions | On change | |
| LSA | Roman Pot positions | On change | |
| LSA | TDI, TCDQ positons | On change | |
| LSA | Orbit corrector settings | On change | |
| RF | RF - voltage, frequency, bunch length | 1 Hz | |
| RF | bunch length - wall current monitor | 1 Hz | |
| Vacuum | /* Vacuum pressure readings along straight section around IP in */ /* 10**-10 torr averaged over subsections of the straight section */ | < 0.1 Hz | |
| LSA | Optics, beta*, strength settings | ||
| LSA | Beam related Settings: Crossing angle, Separation, Dipole Compensators currents and polarties, Exp magnet currents |
On change | |
| LSA | Run control: fill number, bunch configuration, target energy, target beta* (each experiment), injection accept, | ||