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SuperXAS

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User Information

General Information

For detailed user information please refer to PSI User Office.

Proposals

Proposers interested in an experiment at SuperXAS are strongly encouraged to contact the beamline scientists prior to submitting a proposal. Proposals have to be submitted using the SLS Digital Users Office (DUO) system.

The scheduling periods and deadlines for calls for proposals can be found in detail at SLS Proposal Calls.

The overbooking factor (i.e., the ratio of requested shifts to available shifts) at the superXAS beamline is typically 3. Shortly after the submission deadlines (see above), the proposals are reviewed confidentially by an independent committee (Proposal Review Committee - PRC). After review, notification of success or failure is automatically sent to the main proposer. The successful proposals are then scheduled. Every effort is made to accommodate the wishes of the users regarding the convenience of the allocated shift dates. It is therefore important that the proposers fill out that part of the proposal in the DUO system requesting information about preferred and inconvenient dates, as this considerably facilitates scheduling.

Long-term proposals extend over three scheduling periods. Justification for submitting a long-term proposal should be compelling. In general, proposals for experiments that are considered to be "high-risk" are unlikely to obtain long-term status until their feasibility has been proven. Even then, it should be apparent to the PRC, such as through publications in high-profile journals, that long-term status is justified.

Beamline Schedule

You can access the current SuperXAS schedule in the SLS Operation Calendar.

Preparing your beamtime

General information on things that should be organized in advance of beamtime is given at PSI User Office - Before Arrival.

PSI User Office - Before Arrival

It is recommended that the proposer contact the relevant beamline scientist to obtain any information required for preparing his/her experiment prior to the beamtime. He/she should first carefully check this website to see what is available at his/her endstation of interest. In addition, requests for dosimeters can be obtained by the DUO, as well as the information about accommodation at the guesthouse and nearby hotels can be obtained here.

It is important that the forthcoming user has checked with the beamline scientist the following considerations:


1. Desired photon energy?
2. Do you require the QEXAFS monochromator (time resolution below 10 s)
3. What detector type is desired (Fluorescence, Transmission, High resolution fluorescence detection)
4. What sample environment is needed (temperature, pressure, gases, etc)?
5. Sample mounting possibilities and constraints?


Setting up an experiment is, in general, performed as part of the allocated beamtime, in other words, it is not expected that the previous user finishes early in order to allow the next user to prepare the experiment in advance. Under favorable circumstances, it may be possible to complete some part of setting up in the experimental hutch in advance. This depends on whether the hutch is being used by another user immediately prior to one's beamtime. Check with your local contact.

Adaptor plate for you setup

Please, make an adaptor plate for your setup so that it fits to our sample manipulator (the drawings of the top part of the Y-stage are provided in the Endstation description). We will not accept setups mounted with scotch tape!

Standard equipment

Standard setups can be booked (at least 2 months in advance by e-mailing to the local contact):
1. Gas bottles of particular gas mixtures
2. Gas blower heaters : (1) RT-900 K or (2) RT-1200 K
3. Liquid nitrogen cryojet ( 100K – 500 K)


Special equipment

Special setups can be provided in the framework of a collaboration with beamline staff:
1. Mass-spectrometer
2. Capillary plug-flow reactor
3. Gas mixing setups
4. Other facilities

Importing experimental equipment

It is strongly recommended that the user ensures that all necessary preparations have been made for the import of any equipment that needs to be checked through Swiss Customs. Failure to do this can lead to substantial delays and possible loss of some or all of the allocated beamtime. A comprehensive description of the necessary steps to take are given here, including contact details if there are any uncertainties or questions.

During experiment

Shift Schedule


Morning shift: 07:00 - 15:00
Evening shift: 15:00 - 23:00
Night shift: 23:00 - 07:00


 

Machine status

The current beam status can be viewed at SLS Realtime Status page.

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User Contact Points at PSI

PSI User Office
DUO Login

How to apply?

A short description of the procedures relevant to proposals at the PSI user facilities.

Call for Proposals

PX Beamlines: Call is open for proposals
More Information

All other Beamlines
08 February 2020: Call is open for proposals
More Information

EU Support for SLS-non-PX-users

Effective March 1, 2012 the funding for travel support and daily allowances will be only available through a application at BioStruct-X.
Find the complete information on the
EU Access Programmes Webpage


PSI Joint Users Association

Association representing the interests of PSI user community
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