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Libera Single Pass H
The aim of a single pass phase and position measurement is to resolve the beam position and phase from the information extrapolated from the pulsed or continuous wave structures that are crossing the beam position monitor. Libera Single Pass H makes accurate beam position and phase measurements possible. Together with implemented fast communication protocols (e.g. Gb Ethernet), it represents a reliable and deterministic building block for fast feedback building or feed forward loops and thus enables to achieve higher beam stability.
Product Description
Papers
References
Benefits:
- Analog and real-time digital signal processing and high-level software
- Up to four beam processors in one chassis
- Easy to integrate in any Control System
Data processing:
Libera Single Pass H is a system optimized for processing heavy particles beam signals in linear accelerators’ applications. The beam RF signals are first processed by means of analog signal processing, then the amplitude and phase information is extracted from the digitized signals. A digital processing system extracts then the beam phase and position information. The position and phase data is available in a stream that can be used for monitoring and feedback purposes.
Libera Single Pass H front panel:
The Libera Single Pass H system architecture is based on PCIe implemented on AMC standards. It is a user-friendly network-attached device that has a powerful computational interconnect board (ICB) managing a number of satellite boards.
Libera Single Pass H Capabilities
| General product code | LSPH |
| Number of input channels (measuring) | 20 (4 per module + reference channel) |
| BPM slots | 1 - 4 |
| Supported input frequency range | <700 MHz |
| A/D conversion | 130 MHz/16 bit |
| Cooling | Active (fans) |
| Power supply | 110/220 V, 250 W |
| Timing signals | Electrical (4)/optical |
| Fast data links | RJ-45 &SFP |
| Maximum input signal* | <*10 dBm* |
| Input gain/attenuation | Fixed |
| Temperature drift, typical | <1 μm/°C |
| Position RMS at bunch-by-bunch data rate | / |
| Position RMS at fast 10 kHz data rate | / |
| Position RMS at slow 10 Hz data rate | / |
| Position RMS at 1 MHz data rate | <3 μm, <003° |
| Memory size per module | up to 8 Gbits |
| Dimensions | H: 2 U, W:19" (rack mountable), D: 310mm |
*Can be extended/customized depending on user requirements
Libera Single Pass H Functionalities
| Bunch-by-bunch processing | No |
| Real time data streaming | Optional* |
| Slow data | No |
| Gain control | No |
| Selectable processing window | Yes |
| Processing delay | Yes |
| Multi-chassis synchronization | Trigger based |
| Data time stamping | Trigger-counter |
| Interlock detection and output | Yes |
| Postmortem capability | Yes |
| FFT/FFZ peak | No |
| Single-pass measurement | Yes |
| Additional Digital I/O channels and Analog output | No |
| Closed Orbit Feedback Application | No |
* Requires additional module: GDX module
Libera Single Pass H Performance
| Signal Level [dBFS] | Measured Peak [mV] | Typical position RMS (μm) | Typical phase RMS (°) |
|---|---|---|---|
| 0 | 1000 | 1 | 0.01 |
| -20 | 100 | 3 | 0.01 |
| -40 | 10 | 25 | 0.08 |
| -60 | 1 | 200 | 0.5 |
Libera Single Pass H
Simplified Instrument/Application Development and System Integration Using Libera BASE SW Framework…ICALEPCS11, France
Libera Single Pass H is used at the following labs:
- ADS, CSNS – Institute of High Energy (IHEP), China
- FAIR – Helmholtzzentrum für Schwerionenforschung GmbH-GSI, Germany
- FRIB – Michigan State University/NSCL, USA
- IMP-CAS, ADS, SSC Linac, LEAF, Sichuan– Institute of Modern Physics Chinese Academy of Sciences (IMP-CAS), China
- IPNO – Irène Joliot-Curie (IJCLab), France
- J-PARC – The High Energy Accelerator Research Organization-KEK, Japan
- KOMAC – Korea Atomic Energy Research Institute (KAERI), South Korea
- LANSCE – Los Alamos National Lab (LANL),USA
- SPIRAL 2 – Grand Accelerateur Nationak d’Ions Lourds (GANIL), France
- Tsinghua University – Tsinghua University, China
