ICALEPCS2013 - List of Authors (Jalmuzna, W.)

Paper

Title

Page

WECOCB06

Saving Costs and Increasing Data Throughput in MicroTCA.4 by Hardware Concept Extension and Optimization of Data Transfer Performance

V. Dirksen
DESY, Hamburg, Germany
W. Jałmużna
TUL-DMCS, Łódź, Poland

MicroTCA has found many uses in applications requiring a modular open standard that is smaller and cheaper than AdvancedTCA. Although MTCA.4 has closed the functional gap between ATCA and MicroTCA, the system and slot costs still are key to success, especially for smaller systems. A new hardware concept utilizing the capabilities of the MCH slot in a MTCA.4 system addresses this issue and helps to build more cost efficient solutions without degradation of the performance. At the same time this new hardware concept allows the customer to select from an even larger ecosystem of solutions than what was available so far. This presentation introduces new possibilities of MTCA.4 system configuration and presents first evaluation of the data transfer performance. To optimize performance of the system (in terms of data transfer bandwidth and latency) each configuration requires different approach on firmware/software layer. The presentation shows several concepts of data transfer implementation in PCIe environment and demonstrates their applications in an example uTCA system. Implementations include firmware level interfaces, driver to OS and interfaces to common control systems .
MTCA.4, RTM, more performance, cost saving, PCIexpress, EPICS and DOOCS

Slides WECOCB06 [1.260 MB]

THPPC135

From Pulse to Continuous Wave Operation of TESLA Cryomodules – LLRF System Software Modification and Development

1366

W. Cichalewski, W. Jałmużna, A. Piotrowski, K.P. Przygoda
TUL-DMCS, Łódź, Poland
V. Ayvazyan, J. Branlard, H. Schlarb, J.K. Sekutowicz
DESY, Hamburg, Germany
J. Szewiński
NCBJ, Świerk/Otwock, Poland

Funding: We acknowledge the support from National Science Center (Poland) grant no 5593/B/T02/2010/39
Higher efficiency of TESLA based free electron lasers (FLASH, XFEL) by means of increased quantity of photon bursts can be achieved using continuous wave operation mode. In order to maintain constant beam acceleration in superconducting cavities and keep short pulse to CW operation transition costs reasonably low some substantial modification of accelerator subsystems are necessary. Changes in: RF power source, cryo systems, electron beam source, etc. have to be also accompanied by adjustments in LLRF system. In this paper challenges for well established pulsed mode LLRF system are discussed (in case of CW and LP scenarios). Firmware, software modifications needed for maintaining high performance of cavities field parameters regulation (for 1Hz CW and LP cryo-module operation) are described. Results from studies of vector sum amplitude and phase control in case of resonators high Ql factor settings (Ql~1.5e7) are shown. Proposed modifications implemented in VME and microTCA (MTCA.4) based LLRF system has been tested during studies at CryoModule Test Bench (CMTB) in DESY. Results from this tests together with achieved regulation performance data are also presented and discussed.

Poster THPPC135 [1.310 MB]

Paper	Title	Page
WECOCB06	Saving Costs and Increasing Data Throughput in MicroTCA.4 by Hardware Concept Extension and Optimization of Data Transfer Performance
	V. Dirksen DESY, Hamburg, Germany W. Jałmużna TUL-DMCS, Łódź, Poland
	MicroTCA has found many uses in applications requiring a modular open standard that is smaller and cheaper than AdvancedTCA. Although MTCA.4 has closed the functional gap between ATCA and MicroTCA, the system and slot costs still are key to success, especially for smaller systems. A new hardware concept utilizing the capabilities of the MCH slot in a MTCA.4 system addresses this issue and helps to build more cost efficient solutions without degradation of the performance. At the same time this new hardware concept allows the customer to select from an even larger ecosystem of solutions than what was available so far. This presentation introduces new possibilities of MTCA.4 system configuration and presents first evaluation of the data transfer performance. To optimize performance of the system (in terms of data transfer bandwidth and latency) each configuration requires different approach on firmware/software layer. The presentation shows several concepts of data transfer implementation in PCIe environment and demonstrates their applications in an example uTCA system. Implementations include firmware level interfaces, driver to OS and interfaces to common control systems . MTCA.4, RTM, more performance, cost saving, PCIexpress, EPICS and DOOCS
	Slides WECOCB06 [1.260 MB]

THPPC135	From Pulse to Continuous Wave Operation of TESLA Cryomodules – LLRF System Software Modification and Development	1366
	W. Cichalewski, W. Jałmużna, A. Piotrowski, K.P. Przygoda TUL-DMCS, Łódź, Poland V. Ayvazyan, J. Branlard, H. Schlarb, J.K. Sekutowicz DESY, Hamburg, Germany J. Szewiński NCBJ, Świerk/Otwock, Poland
	Funding: We acknowledge the support from National Science Center (Poland) grant no 5593/B/T02/2010/39 Higher efficiency of TESLA based free electron lasers (FLASH, XFEL) by means of increased quantity of photon bursts can be achieved using continuous wave operation mode. In order to maintain constant beam acceleration in superconducting cavities and keep short pulse to CW operation transition costs reasonably low some substantial modification of accelerator subsystems are necessary. Changes in: RF power source, cryo systems, electron beam source, etc. have to be also accompanied by adjustments in LLRF system. In this paper challenges for well established pulsed mode LLRF system are discussed (in case of CW and LP scenarios). Firmware, software modifications needed for maintaining high performance of cavities field parameters regulation (for 1Hz CW and LP cryo-module operation) are described. Results from studies of vector sum amplitude and phase control in case of resonators high Ql factor settings (Ql~1.5e7) are shown. Proposed modifications implemented in VME and microTCA (MTCA.4) based LLRF system has been tested during studies at CryoModule Test Bench (CMTB) in DESY. Results from this tests together with achieved regulation performance data are also presented and discussed.
	Poster THPPC135 [1.310 MB]