Experience with Single Cavity and Piezo Controls for Short, Long Pulse and CW Operation

Przygoda, Konrad; Ayvazyan, Valeri; Echevarria, Pablo; Rybaniec, Radoslaw; Schlarb, Holger; Schmidt, Christian; Sekutowicz, Jacek

doi:10.18429/JACoW-IPAC2017-THPAB106

Joint Accelerator Conferences Website

The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.

RIS citation export for THPAB106: Experience with Single Cavity and Piezo Controls for Short, Long Pulse and CW Operation

TY - CONF
AU - Przygoda, K.P.
AU - Ayvazyan, V.
AU - Echevarria, P.
AU - Rybaniec, R.
AU - Schlarb, H.
AU - Schmidt, Ch.
AU - Sekutowicz, J.K.
ED - Schaa, Volker RW
ED - Arduini, Gianluigi
ED - Pranke, Juliana
ED - Seidel, Mike
ED - Lindroos, Mats
TI - Experience with Single Cavity and Piezo Controls for Short, Long Pulse and CW Operation
J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017
C1 - Copenhagen, Denmark
T2 - International Particle Accelerator Conference
T3 - 8
LA - english
AB - We present a compact RF control system for SCRF single cavities based on MicroTCA.4 equipped with specialized advanced mezzanine cards (AMCs) and rear transition modules (RTMs). To sense the RF signals from the cavity and to drive the high power source, a DRTM-DWC8VM1 module is used equipped with 8 analog field detectors and one RF vector modulator. Fast cavity frequency tuning is achieved by piezo-actuators attached to the cavity and a RTM piezo-driver module (DRTM-PZT4). Data processing of the RF signals and the real-time control algorithms are implemented on a Virtex-6 FPGA and a Spartan FPGAs within two AMCs (SIS8300-L2V2 and DAMC-FMC20). The compact single cavity control system was tested at Cryo Module Test Bench (CMTB) at DESY. Software and firmware were developed to support all possible modes, the short pulse (SP), the long pulse (LP) and CW operation mode with duty cycles ranging from 1 % to 100%. The SP mode used a high power multi-beam klystron at low QL ~3·10⁶. For the LP mode (up to 50% duty cycle) and the CW mode a 120 kW IOT tube was used at QL up to 1.5·10⁷. Within this paper we present the achieved performance and report on the operation experience on such system.
PB - JACoW
CP - Geneva, Switzerland
SP - 3966
EP - 3968
KW - cavity
KW - feedback
KW - operation
KW - controls
KW - experiment
DA - 2017/05
PY - 2017
SN - 978-3-95450-182-3
DO - 10.18429/JACoW-IPAC2017-THPAB106
UR - http://jacow.org/ipac2017/papers/thpab106.pdf
ER -