Conceptual design study and cost estimate for the main coils for a 500 MeV H⁻ cyclotron
Notice bibliographique
Résumé
A study has been conducted for the purpose of developing a design for the TRIUMF main magnet coils which was to result in a minimum capital investment when the costs of the coils and the power supply were added together. Two basic designs were considered, one being the more conventional design employing extruded square hollow conductor, the other making use of rectangular conductor bars. The conventional design was found to be unsuitable for the TRIUMF coils due to lack of space for the large number of water circuits that would be needed in order to prevent excessive temperature rise and destructive shear forces to develop within the coil. In addition, the coils would have to be wound at the site due to their large size, making the fabrication work unduly expensive. The rectangular bar design permits the coils to be divided into segments, thus making it feasible to do the manufacturing work in a coil manufacturer’s plant. Minimum capital investment is achieved if the coils are made in 120-degree segments using extruded aluminum as conductor material. Sixty-degree segments are more expensive than 120-degree segments but offer certain advantages which are not found in the 60-degree segment version. Thus, the magnetic field irregularities produced in the segment junction areas occur in six places, which is preferable to having the field distortion in only three places. The 60-degree segments also provide a desirable flexibility between all magnet sectors permitting individual height adjustment of the magnets. The cost of power supplies with various output characteristics has been estimated. Two preliminary cost estimates were received from two power supply manufacturers. These estimates were based on a power supply with an output current of 16,000 amperes and an output power of 2 megawatts. As a result of the findings, it has been recommended that extruded bar aluminum conductor be employed in the fabrication of the coils and that 60-degree segments be used. The conductors should be insulated from each other and from ground by means of glass-epoxy laminates. It is also proposed that the insulation be reinforced by expoxy potting of the coil segments. The epoxy should be formulated to give maximum radiation resistance, and alumina grains should be used to further enhance this property. Bolted flexible copper connectors have been recommended for use between coil segments. The recommended coil design is shown on various figures and drawings included in the report along with graphs demonstrating power demands, capital investment costs and operating costs for different conductor materials and different number of coil turns. On title page: WMB&A-179-1R1
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».