WPM & HLS Status and Schedule Franz Peters, Georg Gassner SLAC / MET

1. WPM & HLS Status and ScheduleFranz Peters, Georg Gassner SLAC / MET • Reminder • Hardware • Status • Schedule

2. Reminder Undulator Length = 132 Meter plus… 33 U-Segments need to be stable in a line within a few microns X & Y- Motion of single U - Segments could be larger, eventually… Vertical U-Position = f (Support temperature) = ~ 15 Micron/ºC Unpredictable motions may occur by several reasons, as …

3. Reminder WPM = WirePositionMonitor Conductive wire is stretched (140 m) inside a conductive tube (8 mm) RF Signal (CW) is transmitted along this air isolated “coaxial cable” RF loops inside the tube. Loop currents determines the wire position HLS = HydroLevelingSystem Pipe ½ filled with water. Water surface used as common reference Capacitive sensors measure the distances to this common reference Ultrasonic sensor detects distance of surface to under water plains

4. Reminder WPM & HLS will operate as one AlignmentDiagnosticSystem, ADS WPM measures: X & Y- Positions relative to two stretched wires HLS measures: Y - Positions relative to the water surface Common Task: X & Y Positon monitoring of U-Segments Resolution: < Micrometer Data rate: Every few minutes Operation: Continously, no drifts 1400 mm

5. Left Right Reminder ADS Position sensors at the girders

6. ADS Sensors Left to right: Wire Position Monitor - Four loops with SMA con. Field distribution - 4 Loops around the wire WPM gap view - Gap = 8 x 8 mm Left to right: HLS Capacitive sensor - Shown, down side up HLS Pot & Sensor - Pot with pipe adapter - Bracket to the girder - Sensor on top, ready to go

7. Capacitive sensor Bellows Ultrasonic sensor HLS Hardware Water pipes and pots Water pipe inside girder

8. LTU beam line HLS Sensors Beam dump WPM End station HLS Pipe HLS Hardware Integration of LTU beam line monitors Water refill station Top view LTU beam line Undulator Undulator HLS Sensors Beam dump WPM End station HLS Pipe

9. WPM Hardware Wire tube support system Monitors at a short break section

10. 6 5 4 3 2 1 Monitor cabling WPM Hardware Signal cabling Electronics sub-station Monitor signal cabling Wire position monitor

11. WPM Hardware Wire End Station < Wire terminals < Aluminum supports Anocast stands (Granite + Epoxy) • Wire vibration needs to be minimized! • First harmonic frequency ~ 0.5 Hz • Coupling to the ground is crucial…

12. HLS Status Hardware • Level sensors 100% completed • Tube system 90% completed • Network & cables 80% completed • Sensor calibration 70% completed Software • Interface with sensors completed and tested • Interface with LCLS controls defined and tested • Data exchange between data dump and analysis computer tested • Data analysis theory defined, but not coded

13. WPM Status • Wire tube support system 100% completed • Local computers & ADC Interfaces 100% completed • Monitor signal cable assemblies 100% completed • Wire end stations & terminals 90 % completed • Wire position monitors 90% completed • Wire tubes & tube connections 90% completed • Local electronics stations 80% completed • Signal processing & Data acquisition 70% completed • Software, Application & Analysis 50 % completed

14. ADS Schedule HLS Water tube system comes assembled with girders, installation June to 25/10/08 Installation of sensors and cable connections July to 25/10/08 HLS will be commissioned partly in sections of some girder July to November Commissioning of entire HLS needs time after last girder is placed. WPM Girders has to be in place, before wire tube installation can start June to 25/10/08 Installation of substations and cabling can be done any time July to 25/10/08 Due to stretched wires are needed, commissioning starts November 08 Pre-checks of the system will minimize, but not wipe out time for commissioning. In general Schedule needs to be synchronized with installation of the Undulator Segments

15. End of Presentation