WR PTP synchronization of WRS under excessive PTP and LLDP traffic 1. Introduction The White Rabbit (WR) technique is specially developed to provide sub nanose...
MSI/IRQ Latency Measurements with LM32, Etherbone and Saftlib In autumn 2017, the latency of Message Signalled Interrupts (MSI) has been measured involving differ...
Booster Test November 2021 Introduction The so called 'Booster Mode' shall be used to accumulate beam from multiple SIS18 injections into SIS100 at a rate of abo...
Etherbone Performance Measurements Introduction Access to Wishbone (WB) slaves in the FPGA from the host system is a prominent use case for the accelerator contr...
SCU Kernel Task Switching Latency Introduction The hardware group (thx to Stefan!) has investigated task switchting / preemption on the SCU kernel with RT patch ...
Pseudo SRAM Access from lm32 Introduction The W968D6DA provides 256Mbit (32MByte) of Pseudo SRAM (datasheet). It provides 32 bit address width and 16 data lines....
WR ZEN aka SSK Introduction The timing team (TOS) operates a couple of distinct White Rabbit networks. The most important one is a network called production, tha...
Report: Latency and Loss of Timing Messages in the Timing System Introduction Starting in October 2019 the ECA Tap module was added to the gateware of a few dedi...
Saftlib Latency Measurements During the startup of the accelerator in February 2021, issues have been observed with the so called function generator (FG): Occasio...
Torture Report about GMT with Debian on PC and SL6/CentOS 7 on SCU3 Setup A schedule containing three messages is iterated by the Data Master. The messages are s...
Booster Test December 2021 TL;DR For 'booster mode': * timing the beam transfer from UNILAC to SIS18 works with ~98% efficiency, if rf conditioning at UNILAC ...
Irradiation of Fibres at HHD Cave (SIS18 beam dump) Introduction For FAIR, timing sensitive equipment will be installed in the niches of SIS100. It might be poss...
Irradiation of Fibres at SIS18 Introduction For FAIR, timing sensitive equipment will be installed in the niches of SIS100. It might be possible, that fibres to ...