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About Us

What is SESAME?(https://www.sesame.org.jo/about-us/what-is-sesame)

Governing Document of SESAME(https://www.sesame.org.jo/about-us/governing-document)

SESAME's Structure(https://www.sesame.org.jo/about-us/sesames-structure)

Members and Observers of SESAME(https://www.sesame.org.jo/about-us/members-sesame)

The Users of SESAME(https://www.sesame.org.jo/about-us/users-sesame)

Cooperative Instruments/Endorsements(https://www.sesame.org.jo/about-us/cooperative-sesame)

Information Material(https://www.sesame.org.jo/about-us/information-material)

SESAME in the Press(https://www.sesame.org.jo/about-us/sesame-in-the-press)

Historical Highlights(https://www.sesame.org.jo/about-us/historical-highlights)

Accelerators

SESAME’s Accelerators(https://www.sesame.org.jo/accelerators)

Machine Operation Schedule(https://www.sesame.org.jo/accelerators/operation-schedule-status)

Machine Description and status(https://www.sesame.org.jo/accelerators/operation-status)

Injector

Microtron(https://www.sesame.org.jo/accelerators/injector/microtron)

Booster(https://www.sesame.org.jo/accelerators/injector/booster)

Storage Ring(https://www.sesame.org.jo/accelerators/storage-ring)

Technology

Control & PSS(https://www.sesame.org.jo/accelerators/technology/control-pss)

Front Ends, Vacuum & Cooling

Front Ends, Vacuum(https://www.sesame.org.jo/accelerators/technology/front-ends-vacuum-cooling/front-ends-vacuum)

Cooling(https://www.sesame.org.jo/accelerators/technology/front-ends-vacuum-cooling/cooling)

Radio Frequency(https://www.sesame.org.jo/accelerators/technology/radio-frequency)

Mechanics(https://www.sesame.org.jo/accelerators/technology/mechanics)

Diagnostics(https://www.sesame.org.jo/accelerators/technology/diagnostics)

Magnets and IDs(https://www.sesame.org.jo/accelerators/technology/magnets-and-ids)

Power Supplies(https://www.sesame.org.jo/accelerators/technology/power-supplies)

Publications(https://www.sesame.org.jo/accelerators/publications)

Beamlines

SESAME’s Beamlines(https://www.sesame.org.jo/beamlines)

BM02 - IR(https://www.sesame.org.jo/beamlines/ir)

BM08 - XAFS/XRF(https://www.sesame.org.jo/beamlines/xafs-xrf)

ID09 - MS/XPD(https://www.sesame.org.jo/beamlines/ms)

ID10 - BEATS(https://www.sesame.org.jo/beamlines/beats)

ID11L - HESEB(https://www.sesame.org.jo/beamlines/heseb)

ID11R - TXPES(https://www.sesame.org.jo/beamlines/txpes)

Technology

Scientific Computing & Sys. Comm.(https://www.sesame.org.jo/beamlines/technology/scientific-computing-sys-comm)

Data Collection and Analysis(https://www.sesame.org.jo/beamlines/technology/data-collection-and-analysis)

Detectors & Electronics(https://www.sesame.org.jo/beamlines/technology/detectors-electronics)

Publications(https://www.sesame.org.jo/beamlines/technology/publications)

Publications(https://www.sesame.org.jo/beamlines/publications)

Press Office(https://www.sesame.org.jo/press-office)

Announcements(https://www.sesame.org.jo/press-office/announcements)

Highlights(https://www.sesame.org.jo/press-office/highlights)

News(https://www.sesame.org.jo/press-office/news)

Press Releases(https://www.sesame.org.jo/press-office/press-releases)

Newsletters(https://www.sesame.org.jo/press-office/newsletters)

SESAME'S

Publications(https://www.sesame.org.jo/sesames/publications)

Tenders(https://www.sesame.org.jo/sesames/tenders)

Calendar of Events + Training(https://www.sesame.org.jo/sesames/events)

Careers(https://www.sesame.org.jo/sesames/careers)

Jobs(https://www.sesame.org.jo/sesames/careers/jobs)

PhD Studentships(https://www.sesame.org.jo/sesames/careers/phd-studentships)

Postdoctoral Fellowships(https://www.sesame.org.jo/sesames/careers/postdoctoral-fellowships)

Billboard Events Other Bodies(https://www.sesame.org.jo/sesames/billboard-events-other-bodies)

About SR

What is a Synchrotron Light Source?(https://www.sesame.org.jo/about-sr/what-is-a-synchrotron-light-source)

Useful Links(https://www.sesame.org.jo/about-sr/useful-links)

For Users

SESAME User Office (SUO)(https://www.sesame.org.jo/for-users/sesame-user-office)

SESAME Users’ Committee (SUC)(https://www.sesame.org.jo/for-users/sesame-users-committee-suc)

User Guide(https://www.sesame.org.jo/for-users/user-guide)

User Support(https://www.sesame.org.jo/for-users/user-support)

Safety for Users(https://www.sesame.org.jo/for-users/safety-for-users)

Guest House(https://www.sesame.org.jo/guest-house)

Front Ends, Vacuum

Overview

Description and Specifications

Staff

Overview

Vacuum system:

Beam stability and beam lifetime are the major requirements for good operation of the synchrotron light sources. Pressures in the range of low 10-9 mbar are typical values to be achieved during operation in order to have a good beam lifetime; the pressure inside the vacuum chamber is produced by the thermal desorption and the photon stimulated desorption processes, the interaction between the electron beam with the residual gases leads to an elastic and inelastic scattering causing electron losses and reducing the lifetime of the beam.