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SESAME� � A 3rd Generation Synchrotron Light Source for the Middle EastPresented by: Seadat Varnasseri, SESAME, Amman (s.varnasseri@unesco.org.jo)

CERN Accelerator School, 2-14 October 2005, Trieste, Italy

Building construction progress

December 2003

October 2004

The Main Storage Ring

For the new lattice the so-called “TME-Optic” has been adopted, which gives the smallest emittance and the highest percentage of the circumference for insertion devices. The storage ring has 8 Super Periods with 2 x 22.5 degree bending magnets. The basic elements of the lattice are combined function bending magnets, with a set of quadrupoles and sextupoles on each side of the bending magnet, in order to provide the proper focusing and the chromatic correction for the beam. 12 straight sections are available for insertion devices with lengths up to 3.9 meters.

12Available Straight Sections for Insertion Devices

828 x 21Long Straights Beam CrossSection

�� ��σσσσxσσσσz � �� �� �� � �� ���� �� �� �� �

3.9Max Insertion Device Length (m)

26Emittance (nm.rad)

133.1Circumference (m)

1.455Bending Flux Density (T)

400Maximum Beam Curr. (mA)

2.5Energy (GeV)

SESAME Storage Ring Main Parameters

Experimental Floor Layout

Developed under the auspices of UNESCO, S E S A M E ( S y n c h r o t r o n - l i g h t f o r Experimental Science and Applications in t h e M i d d l e E a s t ) w i l l b e a m a j o r international research centre in the Middle East / Mediterranean region, promoting peace and understanding through scientific cooperation. It will have as its centrepiece a synchrotron light source originating from BESSY I, given as a gift by Germany. The u p g r a d e d m a c h i n e , a 2 .5 Ge V 3 r d

Generation Light Source with an emittanceof 26 nm.rad and 12 places for insertion devices, will provide light from the far infra-red to hard X-rays for a wide range of studies, including those addressing environmental and biomedical issues of relevance to the region. SESAME will offer e x c e l l e n t o p p o r t u n i t i e s f o r t h e

training of Middle East scientists and attract those working abroad to consider returning. As of August 2005, Members of the SESAME Council are Bahrain, Egypt, Iran, Israel, Jordan, Pakistan, Palestinian Authority, and Turkey. More are expected to join. Members provide the annual operating budget. The facility is located in Allaan, Jordan, 30 km North-West of Amman. Jordan has provided the site & funds for the ne w bui ld ing whose construction, started in July 2003, will be completed in 2006. Plans for initial beam lines include MAD Protein Crystallography, SAXS & WAXS for Polymers and Proteins, Powder Diffraction for Material science, UV/VUV/SXR Photoelectron Spectroscopy and Photoabsporption Spectroscopy and I R S p e c t r o s c o p y & E X A F S .

User interest in cl inical medical appl ica t ions is gr owing . Some beamlines will be built by Member countries. Additional funds to purchase components of the new ring and beamlines are being sought from the EU, the US, and other sources. A Director, Scientific Director, Technical Director, and Administrative Director are on board and an accelerator group, made up of Middle East scientists and engineers, is finalizing the design of the facility. Four committees advise the Council and assist in developing the technical design, beam lines, user c o m m u n i t y , a n d s c i e n t i f i c Program.

For more details see: www.sesame.org.jo

The S E S A M E Building

The SESAME building, designed by Rafiq Sarraf and the Engineering Department of the Al-Balqa’ Applied University in Salt, Jordan together with engineers from the Karlsruhe Research Center and funded by Jordan, will be completed in 2006. The ground floor contains the ring, injector and up to 27 beam lines. The experimental area is 60m x 60m with extensions of 7.5m x 30m on each side. Space for 12 laboratories and 3 workshops are in the corners. The 1st floor, with 2100m2, provides space for 20m2 offices for staff and users plus the control room.

Science with S E S A M E

Several hundred scientists from the Middle East have participated in five scientific workshops and three Users’ Meetings (see reports on the web site). Based on input on these meetings, 70 proposals received, and joint meetings of the Scientific and Beam Lines Advisory Committees, the following first phase beam lines are planned:

August 2005

Storage Ring Super Period

1E+12

1E+13

1E+14

1E+15

1E+16

0.1 1 10 100Photonenergy (KeV)

Pho

tons

/ se

c / 0

.1%

BW

In-Vacuum (6mm gap) Undulator, 25mm

Wiggler, 3.5T, 60mm

Wiggler, 2.5T, 120mm

Undulator, 40mm

Bending, 2.5GeV

Flux

1E+13

1E+14

1E+15

1E+16

1E+17

1E+18

1E+19

0.1 1 10 100P ho to nenergy (KeV)

Ph

oto

ns/

s/m

m2̂*

mra

d2̂*

0.1B

W

Undulator, 40mm

Wiggler, 3.5T, 60mm

Wiggler, 2.5T, 120mm

Bending, 2.5GeV

In-Vacuum (6mm gap) Undulator, 25mm

Brightness

Radiation from Bending Magnets, Wigglers and Radiation from Bending Magnets, Wigglers and UndulatorsUndulators

Bending mag.0.01 ÷ 1 eVIR Spectromicroscopy6

PM Wiggler3 ÷ 25 keVPowder diffraction5

PM Wiggler3 ÷ 30 keVXAFS/XRF4

Undulator10 keVSAX/WAXS3

Undulator.005 ÷ 1 keVPES & PhotoabsorptionSpectroscopy

2

PM Wiggler (In vacuum undul. in Phase2)

5 ÷ 15 keVMAD Protein Crystallography

1SourceEnergy Beamline

� Council President/Vice President/Secretary: H. Schopper (CERN) / D. Ülkü (Turkey)/M. Nalecz (UNESCO)

Directorate: K. Toukan (Jordan), A. Baig (Pakistan), H. Helal (Egypt), G. Vignola (Italy)

Technical Staff: A. Amro, M. Attal, F. Makahleh, M. Shehab, S. Varnasseri

Advisory Committee Chairs: Technical : A. Wruhlich (PSI, Switzerland) Scientific : Z. Sayers (Sabanci Univ., Turkey) Beam Lines; S. Hasnain (Daresbury Lab, UK) Training; R. Mansouri (Sharif University, Iran)

Bessy I800MeV Injector

Main Storage Ring

• SESAME Site, ALLAN (30 km NW Amman)