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Disponibilité du temps de faisceau

Retrouvez toutes les informations concernant l'allocation du temps de faisceau, la durée des "Shifts" et la planification.


Allocation

Chaque année, des arrêts de la machine sont planifiés régulièrement pour la maintenance et l’évolution de l’anneau de stockage et des lignes de lumières.

Le temps de faisceau pour les utilisateurs est disponible 24h sur 24 et 5 jours par semaine, (du mercredi au dimanche), excepté lors des coupures planifiées pour la maintenance de la machine. Le jour dévolu à la machine pour les études et la maintenance est le lundi.

Le mardi est utilisé, pour l'instant, pour les tests de radio-protection et la construction des 6 dernières lignes de lumière.

Pour chaque période d'allocation, un planning du temps de faisceau disponible qui inclut les arrêts dédiés à la maintenance et à l’évolution des lignes de lumière est fourni (cf. calendrier de fonctionnement).

Le temps de faisceau est réparti de la manière suivante :

65 % du temps de faisceau est attribué aux utilisateurs dont les projets sont évalués dans le cadre des comités de programmes

20 % pour la maintenance de la ligne de lumière, l’instrumentation et les développements techniques, et pour la recherche ‘in-house’, confiée à la responsabilité du responsable de ligne qui rend des comptes sur l’utilisation de la ligne à la direction scientifique. Ce pourcentage peut être augmenté jusqu’à 25 % pour les lignes de lumière qui accueille de nombreux chercheurs associés et qui participe à ces opérations.

Une fraction supplémentaire, de 5 % maximum, peut être réservée pour les accès rapides et laissée à la discrétion de la direction scientifique.

10 % maximum du temps de faisceau est destiné aux accès payants.

Pour chaque période, les différents modes de la machine sont indiqués dans le calendrier de fonctionnement (ex. ‘multibunch’, ‘singlebunche’, etc.).

 

Durée des shifts

Le temps de faisceau est alloué par tranche (shifts) de 8 heures à savoir de 8h à 16h00, de 16h00 à minuit et de minuit à 8h00.

En principe, les expériences sont programmées pour démarrer soit à 8h00, à 16h00 ou à minuit.
Vous êtes invités à venir quelques heures ou la veille avant le début de votre expérience, notamment pour les ‘shifts’ qui démarrent la nuit, pour permettre aux membres de SOLEIL de vous assister dans l’installation de votre expérience pendant les heures normales de travail.

Pour la plupart des expériences programmées, le temps de faisceau est alloué en jour(s) par tranche de 3 x 8 h. Mais la flexibilité est de rigueur pour s’adapter aux besoins des utilisateurs qui ont besoin d'un nombre de "shifts" différent.

Dans certains cas, pour les lignes de lumière qui ont plusieurs branches, ces ‘blocs’ de 3 x 8 h peuvent être fractionnés dans le but d’optimiser les ressources en ‘Manpower’ sur les lignes (beamtime sessions).

 

Planification

Chaque responsable de ligne prépare le planning pour sa ligne d’attribution du temps de faisceau.
Pour chaque période, il s’assure que le temps de faisceau soit planifié par tranche horaire de durées appropriées et séparées par un intervalle ‘technique’ suffisant.
Le responsable de ligne essaie, autant que faire ce peut, de tenir compte des préférences en matière de dates et des périodes d’indisponibilité exprimées lors de la soumission de projet dans le SUN set. 

 

Accès à distance

REMOTE ACCESS to MX beamlines at SOLEIL

SOLEIL offers the possibility to perform remote access experiments at PROXIMA- 1 and/or PROXIMA- 2A Beamlines, respectively.

In the first instance and until early 2018 (or until sufficient experience has been gained), remote access experiments on PROXIMA-1 and PROXIMA-2A will only be provided using a mixed access model, i.e. with at least one local user on site (at SOLEIL) while performing the experiments.

Below are specified few instructions and guidelines for applying and performing remote access experiments.
 

1. To apply for remote access

Either in Standard proposals or in MX/Bio SAXS BAG proposals, you can declare an interest for remote access directly from the proposal submission (within the “General” part on Beamlines TAB).

When expressing interest in remote access, your wish can be expressed as an approximate percentage of total beamtime requested by choosing a value from: 25%, 50%, 75%, or 100%, respectively.

If the proposal is accepted, expressing interest in using remote access does not guarantee the remote access requested; the decision to grant remote access to the experiments will be taken by the Beamline Manager only after discussing and properly scheduling with the proposal main applicant and interested colleagues.

Accordingly, one or more sessions may be scheduled in remote access.

 

2. To apply for access before your experiment

2.1/ Sample selection

Please note that only samples classified (on the sample forms) as BioChemistry, Crystal, and Frozen, and which are given a green safety level (no risk) will be accepted for remote access sessions.

Other types of samples will not figure among the list of selectable samples for a remote access session.

2.2/ Participants declaration

Three types of participants can be distinguished, based on their access mode to the experiments.

  • On-site Participants

An On-site Participant physically comes at SOLEIL to take control of the beamline.

For these participants, ‘Dates’, ‘Subsidies’, ‘Guest house’ and ‘Computer’ parts have to be filled in the Participant form, as before. At least one on-site participant is mandatory until early 2018.

  • Remote Access Users

A Remote Access User can take control of the beamline from a geographically remote location during a session flagged as a remote access session. In the current situation, considering that a minimum of one On-site participant is required for the experiments, the Remote Access User cannot be the person responsible for  the session.

Remote Access Users can only be added for remote access sessions; an On-site participant for one remote access session thus cannot be a Remote Access User.

Providing a phone number is mandatory for a Remote Access User. By default the phone number indicated in the SUN set during the registration of the concerned user is indicated. Please, make sure that this phone number is up to date and that the Remote Access User participant can be contacted at this number during the totality of the flagged session when necessary. Additionally, please note that if you modify the phone number, the modified number will be pushed into the user account form.

Remote Access Users (as On-site Participants) can only be added or removed from in the participants list when the status of the declaration is indicated as ‘Not submitted’ status.

To add or remove participants from the list when the status is ‘Submitted’ or ‘Accepted’, please contact SOLEIL User Office.

 

  • Remote Users

Remote Users cannot take the control of the beamline or the experiments. These users are provided with access to the ISPyB database.

Contrary to the other types of users, Remote Users can be added to, or removed from, the participants list either in ‘Not submitted’, ‘Submitted’ or ‘Accepted’ status without any restrictions.

Remote Users need to be declared in the participants list.

Please also note the following:

  • The On-site Users are responsible for loading and unloading all the Unipucks, related to a remote access session, into the robot.
  • The On-site Users should arrive at 8.30 AM in order to listen to the instructions on the use of the beamline during the time of the remote access experiments.
  • In the instance of a difficulty in performing remote access experiments, the On-site Users take the responsibility to complete and fulfill the experiments locally. It should not be assumed that the work be done by the SOLEIL local contact.
     

Fichier SOLEIL local contact policy (14.42 Ko) remains unchanged, and should be clearly agreed upon by all the experiment participants.

  • Dewar transfer and return forms are to be completed in case those need to be shipped back.


Would you require more information, please contact  SOLEIL User Office.
 

3. To prepare your experiments

To carry out remote access experiments at SOLEIL we recommend the following basics:

  • A good internet connection. You can test your connection to SOLEIL here (available soon).
  • No firewall for incoming communication that would block your connection to the beamline from your institution.
  • One monitor with a good resolution attached to a fast Linux running PC.

To have remote access control to the beamlines PROXIMA-1 and PROXIMA-2A at SOLEIL, you will need to get the middleware NoMachine (URL available soon) installed on your computer.

Access and use of the beamline instructions can be found on the PROXIMA-1 and PROXIMA-2A websites (available soon).

Further information can be provided upon contacting the beamline responsible staff.

No additional software should be required for accessing to the beamline control. Further instructions can be found on the following links:

  • Safety training (available soon),
  • Sample supports and description in ISPyB.

In terms of organisation, we require the Main proposer or the BAG coordinator to gather and collate ALL information related to the visit (number and codes of dry shippers; which pucks are in which shipper; which pucks are to be loaded) and to send this list to the local contact or to the beamline responsible at least 2 days before the visit (for weekend visits: by Wednesday afternoon).  This list should be send complementary to the information contained within the ISPyB database, and will only be used in case of major issue with the ISPyB server.

Additionally, the list must allow your local contact:

  • To rapidly check that the correct number of dry shippers have arrived at SOLEIL, so they can alert you in the eventuality of missing Dewars.
  • To effectively coordinate puck loading and unloading on SOLEIL’s side in case of logistics trouble - this can be a major logistical exercise, and we need your help.
     

4. To get the experiments started

On-site Users are given access to the beamline normally without additional requirements from SOLEIL side. However and as indicated above, it is highly recommended that all On-site Users are familiar with the scheduling of the experiments and logistics involved.

Among the information required to access the beamline control via MXCuBE (being locally or as a Remote Access User), the following details need to be known:

  • Proposal number and proposal password (these details are indicated within the SUN set, in ’Project account password’ function of experiment Management section),  
  • Contact details for SOLEIL Local Contact (including phone number).


First time users are encouraged to contact their local contact in the first instance to discuss any queries you may have.

Instructions to log in as a Remote Access User (available soon).

(Dernière mise à jour, le 04/08/2017)