A flexible and configurable system to test accelerator magnets

Nogiec, Jerzy; DiMarco, J.; Glass, H.; Sim, J.W.; Trombly-Freytag, K.; Velev, G.; Walbridge, D.G.C.

doi:10.1109/pac.2001.986699

Cited by 4 publications

(7 citation statements)

References 1 publication

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“…From the PPC, data are streamed to on-line analysis code running on a PC workstation [9]. The Java code responsible for analysis, data archival, visualization, and measurement control is based on the EMS framework [10]. Details of the readout system are reported elsewhere [11]- [12].…”

Section: A Daq Systemmentioning

confidence: 99%

Field Quality Measurements of a 2-Tesla Transmission Line Magnet

Velev

Foster

Kashikhin

et al. 2006

IEEE Trans. Appl. Supercond.

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Abstract-A prototype 2-Tesla superconducting transmission line magnet for future hadron colliders was designed, built and tested at Fermilab. The 1.5 m long, combined-function gradientdipole magnet has a vertical pole aperture of 20 mm. To measure the magnetic field quality in such a small magnet aperture, a specialized rotating coil of 15.2 mm diameter, 0.69 m long was fabricated. Using this probe, a program of magnetic field quality measurements was successfully performed. Results of the measurements are presented and discussed.

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Section: A Daq Systemmentioning

confidence: 99%

Field Quality Measurements of a 2-Tesla Transmission Line Magnet

Velev

Foster

Kashikhin

et al. 2006

IEEE Trans. Appl. Supercond.

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“…COS has been developed in the hope to solve fundamental programming problems encountered in scientific computing and more specifically in applied metrology [11,12]. Although this domain looks simple at first glance, it involves nonetheless numerous fields of computer science; from lowlevel tasks like the development of drivers, protocols or state machines, the control of hardware, the acquisition of data, the synchronization of concurrent processes, or the numerical analysis and modeling of huge data sets; to high-level tasks like the interaction with databases or web servers, the management of remote or distributed resources, the visualization of complex data sets or the interpretation of scripts to make the system configurable and controllable by nonprogrammers [13,14,15]. Not to mention that scientific projects commonly have to rely on sparse human resources to develop and maintain for the long term such continuallyevolving-systems (i.e.…”

Section: Contextmentioning

confidence: 99%

The C Object System: Using C as a High-Level Object-Oriented Language

Deniau

2010

Preprint

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The C Object System (COS) is a small C library which implements high-level concepts available in CLOS, OBJECTIVE-C and other object-oriented programming languages: uniform object model (class, metaclass and property-metaclass), generic functions, multi-methods, delegation, properties, exceptions, contracts and closures. COS relies on the programmable capabilities of the C programming language to extend its syntax and to implement the aforementioned concepts as first-class objects. COS aims at satisfying several general principles like simplicity, extensibility, reusability, efficiency and portability which are rarely met in a single programming language. Its design is tuned to provide efficient and portable implementation of message multi-dispatch and message multi-forwarding which are the heart of code extensibility and reusability. With COS features in hand, software should become as flexible and extensible as with scripting languages and as efficient and portable as expected with C programming. Likewise, COS concepts should significantly simplify adaptive and aspect-oriented programming as well as distributed and service-oriented computing.

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“…We compared our DSP measurement system with another Fermilab built system using the same Java EMS framework [14], but based on PDI VME modules (model 5035) made by Metrolab [12]- [15]. This system did not have the ability to work in a continuous mode because of limitations in the PDI module readout; the maximum achieved effective probe rotation speed corresponded to 1.5-1.8 Hz with 64 encoder pulses per revolution.…”

Section: Comparison Between Dsp and Pdi Type Measurement Systemsmentioning

confidence: 99%

A Fast Continuous Magnetic Field Measurement System Based on Digital Signal Processors

Velev

Carcagno

DiMarco

et al. 2006

IEEE Trans. Appl. Supercond.

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Abstract-In order to study dynamic effects in accelerator magnets, such as the decay of the magnetic field during the dwell at injection and the rapid so-called "snapback" during the first few seconds of the resumption of the energy ramp, a fast continuous harmonics measurement system was required. A new magnetic field measurement system, based on the use of digital signal processors (DSP) and Analog to Digital (A/D) converters, was developed and prototyped at Fermilab. This system uses Pentek 6102 16 bit A/D converters and the Pentek 4288 DSP board with the SHARC ADSP-2106 family digital signal processor. It was designed to acquire multiple channels of data with a wide dynamic range of input signals, which are typically generated by a rotating coil probe. Data acquisition is performed under a RTOS, whereas processing and visualization are performed under a host computer.Firmware code was developed for the DSP to perform fast continuous readout of the A/D FIFO memory and integration over specified intervals, synchronized to the probe's rotation in the magnetic field. C, C++ and Java code was written to control the data acquisition devices and to process a continuous stream of data. The paper summarizes the characteristics of the system and presents the results of initial tests and measurements.

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A flexible and configurable system to test accelerator magnets

Cited by 4 publications

References 1 publication

Field Quality Measurements of a 2-Tesla Transmission Line Magnet

Field Quality Measurements of a 2-Tesla Transmission Line Magnet

The C Object System: Using C as a High-Level Object-Oriented Language

A Fast Continuous Magnetic Field Measurement System Based on Digital Signal Processors

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