| Paper | Title | Page |
|---|---|---|
| MOPF31 | Overview of Beam Instrumentation Activities for SwissFEL | 119 |
|
||
| SwissFEL will provide users with brilliant X-ray pulses in 2017. A comprehensive suite of diagnostics is needed for the initial commissioning, for changes to the operating point, and for feedbacks. The development of instrumentation for SwissFEL is well underway, and solutions have been identified for most diagnostics systems. I will present here an overview of the instrumentation for SwissFEL, and give details on some recent developments. | ||
|
Poster MOPF31 [4.418 MB] | |
| Export • | reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml) | |
| TUPF07 | FLASH Undulator BPM Commissioning and Beam Characterization Results | 315 |
|
||
|
Recently, the commissioning of FLASH2 has started, a new soft X-ray FEL undulator line at the DESY FLASH facility. In the FLASH2 undulator intersections, the beam positions are measured by 17 cavity beam position monitor (CBPM) pick-ups and electronics* developed for the European XFEL (E-XFEL). In addition four CBPMs are available at FLASH1 for test and development. The new CBPM system enables an unprecedented position and charge resolution at FLASH, thus allowing further analysis and optimization of the FLASH beam quality and overall accelerator performance. Results of first beam measurements as well as correlations with other FLASH diagnostics systems are reported.
* M. Stadler et al., “Low-Q Cavity BPM Electronics for E-XFEL, FLASH-2 and SwissFEL”, this conference. |
||
|
|
Poster TUPF07 [1.112 MB] | |
| Export • | reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml) | |
| WEPD12 | Low-Q Cavity BPM Electronics for E-XFEL, FLASH-II and SwissFEL | 670 |
|
||
| PSI has developed BPM electronics for low-Q cavity BPMs that will be used in the E-XFEL and FLASH-II undulators, as well as in SwissFEL injector, linac and transfer lines. After beam tests at the SwissFEL test injector and FLASH, a pre-series of the electronics has been produced, tested and commissioned at FLASH-II [1]. The design, system features, signal processing techniques, lab-based test and calibration system as well as latest measurement results are reported. | ||
| Export • | reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml) | |
| WEPD13 | Development of the SwissFEL Undulator BPM System | 675 |
|
||
| For SwissFEL, two types of cavity BPMs are used. In the linac, injector and transfer lines, low-Q dual-resonator cavity BPMs with a loaded Q (QL) of ~40 and 3.3GHz mode frequency allow easy separation of the two adjacent bunches with 28ns bunch spacing. For the undulators that receive only single bunches from a beam distribution kicker with 100Hz repetition rate, dual-resonator BPM pickups with higher QL are used. The baseline version for the undulator BPMs is a stainless steel pickup with QL=200 and 3.3GHz frequency. In addition, an alternative version with copper resonators, QL=1000 and 4.8GHz frequency has been investigated. For both pickups, prototypes were built and tested. The status of pickup and electronics development as well as the latest prototype test results are reported. | ||
| Export • | reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml) | |