XPOC XPOC external post-operational checks for the LHC beam dump - PowerPoint PPT Presentation

XPOC XPOC external post-operational checks for the LHC beam dump for the LHC beam dump LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 1

XPOC: Goal C G l � Verify that the dump was correctly V if th t th d tl executed � Launch automatically after each dump L h t ti ll ft h d � Acquisition of equipment/ measurement devices � Analysis of dump action and check against refs � Analysis of dump action and check against refs � Interface with LHC sequencer � Interface with Beam Interlock System � Interface with Beam Interlock System � Storage and retrieval on an “event” basis of acquired data of acquired data � Generate alarms LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 2

XPOC: Faults to be detected C l b d d Asynchronous dump Asynchronous dump � � MKD pre-trigger � Missing MKD � MKD tracking error � MKB tracking error MKB tracking error � � Missing MKB (dilution failure) � Missing MKD redundant branch � MKD re-triggering not working correctly � MSD energy tracking error MSD energy tracking error � � Beam emittance too large � Orbit in IR6 out of tolerance � Direct BLM triggered � IR6 access loop broken IR6 access loop broken � � MSD power convertor trip � Over-populated abort gap � TDE over-temperature � TDE over/ under pressure TDE over/ under pressure � � TCDQ-beam position out of tolerance � MKB/ D internal diagnostic not working � Beam instrumentation not working correctly � BETS not working correctly BETS not working correctly � � LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 3

XPOC: Functional architecture C l h LINE BPM ACQUISITION LINE BPMs LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 4

XPOC: Devices providing data C d d MKD/ MKB : Measured MKD/ MKB current waveforms IPOC MKD/ MKB : Measured MKD/ MKB current waveforms, IPOC � � summary, status MSD : Measured currents, FMCM status � BETS : Measured/ reference currents, voltages, etc � BLM : Losses before/ during extraction (± 100 turns) � BPM : Bunch positions before/ during extraction (± 100 turns) � BCT : Circulating/ extracted intensity (± 100 turns) � BTVs : BTV images, projection and status � TCDS/ Q/ TCS : TCDQ up/ down set/ meas positions & status / Q/ Q p/ / p � Abort gap m onitor : Measured abort gap population � LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 5

XPOC: Operational requirement C l � Split into distinct functionalities: � acquisition and storage � automatic process running in a server connected to the timing system � analysis � analysis � automatic process running in a server connected to the timing system g y � retrieval/ viewing � GUIs to view results and to browse through archived dumps LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 6

XPOC: present status C � Acquisition and storage � Acquiring real data from MKDs, MKBs and writing to SDDS storage SDDS storage � Working on acquisition chains for other devices � Updating logging data base requirements � Analysis � Prototypes for BTVDD tested on dummy data � Prototype for MKD used on real data � About to start working on MKB module � “Event browser” GUI “E t b ” GUI � Some components exist (BTVDD display, MKD history… ) LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 7

XPOC: test & results C l � BTVDD analyses Width [ mm] Height [ mm] Length [ mm] Center [ mm] Start of trace [ mm] trace [ mm] Initial 352 318 899 -1 17 Measures 352 319 1001 -1 16 Error [ % ] Error [ % ] 0 0 0 3 0.3 11 11 0 0 0.2 0 2 LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 8

XPOC: test & results C l � MKD LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 9

XPOC: test & results C l � MKD Comparison LBDS Audit, 28/ 01/ 2008 Gallet Eric, AB/ BT 10