[en] The heat pipe reactor directly extracts heat from the core through the high temperature heat pipe, the system design itself is extremely simplified, and it is more suitable as a technical selection of a small nuclear power source. Fuel economy is an important basis for the selection of reactor technology routes. In order to study the impact of heat pipe reactor design on its fuel cycle economy in detail, a preliminary analysis model of the fuel economy influencing factors of the heat pipe reactor is established in this paper. The eVinci reactor is taken as an example to develop the fuel cycle economy. Exploring and researching on the influencing factors of fuel economy, we obtained the influence trend of the fuel economy such as the overall scheme power scale and core operating temperature. The results show that due to the comprehensive impact of fuel prices, uranium loading, and enrichment, the preferred power scale range for relatively good fuel economy of heat pipe reactors is between about 1 MWt and 5 MWt. Increasing the core operating temperature can greatly improve fuel economy, and economic best power range is extended to high power scale. (authors)

[en] Laser-plasma accelerators are promising candidates to provide a compact source of relativistic electron beams. However, their performance is currently severely limited by the achievable stability in driver laser operation. In this poster we will present our approaches to integrate the recently commissioned 200 TW laser system ANGUS, operated within the LAOLA collaboration of University of Hamburg and DESY, into the accelerator controlls system available at DESY. With its many different amplification stages such a complex system is very easily detuned. To minimize down time and increase the efficiency of maintenance work, a reliable monitoring and logging system is required. We implemented a series of beam pointing, spectrum, energy and other diagnostics into the system and log it with the central DESY archive. Correlations of the different parameters provide valuable insight into the system. We will present first measurements and discuss first analysis.

[en] 1989 has seen an improvement in the average performance of PWRs, BWRs and AGRs relative to 1988, with the load factor average for AGRs showing an encouraging upward trend from the previous year's trough. Once again PWRs have turned in the best average annual load factor. The annual and cumulative load factors to the end of December 1989, for reactors of 150MWe gross and above are tabulated for all countries except the Comecon countries (apart from Hungary) (author)

[en] Full text: A vacuum system to evacuate the 10 MeV RF electron linac assembly to ∼ 5 x10^-8 mbar has been designed, fabricated. At present it is being tested at CDM, BARC. It consists of one 400 l/s capacity turbomolecular pumping unit, two 140 l/s and one 70 l/s capacity sputter ion pumps and gate valves. The entire RF accelerator assembly consists of electron gun, RF linac structure, RF power feed section, beam diagnostic chambers, scan horn, vacuum plumbing lines etc. These components have been fabricated and individually vacuum leak tested up to a ∼ 10^-10 mbar-lit/sec. The total mock up assembly consisting of above sub-assemblies at CDM, BARC has been evacuated. A vacuum of the order of ∼ 3 x 10^-5 mbar with the help of 400 lit/sec turbo molecular pumping unit has been achieved. This paper describes the salient features of the 10 MeV, 10 kW RF linac vacuum system along with the results

[en] This paper describes the status of ICF which output is given in terms of number of emitted neutrons and fusion energy as a function of the estimated input energy from the implosion driver. Results from the highest energy laser experiments are summarised. The theoretical targets and the proposed upgrades of NOVA, GEKKO and OMEGA are also shown. The promised ICF paradise will therefore be approached through a process of interpolation between two known extremes. The objectives of this experiment was to produce more than one MW of fusion power in a controlled way, to demonstrate the technology related to tritium usage tritium injection, its tracking, monitoring/recovery and to establish safe procedures for handling tritium in compliance with the regulatory requirements. (A.B)

No abstract available

[en] The 10 MeV Industrial RF Electron accelerator at EBC, Kharghar, is commissioned and is delivering a beam power of 3 kW. Another similar 9 MeV RF Electron accelerator is operational at ECIL, Hyderabad and will be used for cargo scanning. A 50 keV thermionic pulsed electron gun is used as injector for both these RF linacs. The gun is capable of delivering a maximum current of 1 A. This paper presents the gun testing, the mechanical modifications done in the gun and the grid biasing experiments, to achieve maximum output current from the linac. (author)

[en] The designers of innovative small and medium sized reactors pursue new design and deployment strategies making use of certain advantages provided by smaller reactor size and capacity to achieve reduced design complexity and simplified operation and maintenance requirements, and to provide for incremental capacity increase through multi-module plant clustering. Competitiveness of SMRs (Small and Medium size Reactor) depends on the incorporated strategies to overcome loss of economies of scale but equally it depends on finding appropriate market niches for such reactors. For many less developed countries, these are the features of enhanced proliferation resistance and increased robustness of barriers for sabotage protection that may ensure the progress of nuclear power. For such countries, small reactors without on-site refuelling, designed for infrequent replacement of well-contained fuel cassette(s) in a manner that impedes clandestine diversion of nuclear fuel material, may provide a solution. Based on the outputs of recent IAEA activities for innovative SMRs, the paper provides a summary of the state-of-the-art in approaches to improve SMR competitiveness and incorporate enhanced proliferation resistance and energy security. (author)

[en] The report estimates the future advances of wind power technology. Two trajectories are considered and described: a normal (business as usual) trajectory and a technology trajectory. Two types of plants are considered: 1500 kW turbines on land (roughness class 1.5) in small groups and 2500 kW turbines in large off-shore wind farms. In both cases cost of energy (in DKK/kWh) is estimated to be approximately halved during the next 25 years. For wind turbines in flat terrain cost is estimated to decrease from an average in 1995 of 0.43 DKK/kWh to an average in 2020 of 0.26 DKK/kWh on a normal trajectory and 0.21 DKK/kWh on a technology trajectory. For large off-shore (near coast) wind farms cost is estimated to decrease from an average in 1995 of 0.51 DKK/kWh to an average in 2020 of 0.27 DKK/kWh on a normal trajectory and 0.23 DKK/kWh on a technology trajectory. Increase in the total market volume for wind turbines is estimated as the most important factor for cost reductions. The market is anticipated to follow the most conservative scenario of World Energy Council (180,000 MW by 2020). (au) 17 tabs., 7 ills. 25 refs

No abstract available