# Presentation: 297205

- David Robin

**Welcome to the committee**
**Superbend project status**
**What we hope to accomplish from the review**

- Superbend technical, cost and schedule review

- July 7,8  1999

**Notes:**
The goal of the superbend project is to create sources of high brightness high energy x-ray beams using superconducting magnets. I will talk about the superbend accelerator physics issues. My talk is structured in the following way.
I will give a brief introduction to the superbend project where I will present the motivation for the superbends and compare the superbends  to other high energy x-ray sources. Next I will discuss the modifications to the ring and how that will change the beam  parameters and particularly how it will impact the  other users. I will discuss the possible operational concerns in particular the impact on injection, momentum acceptance and ramping. Finally I will conclude with some summary statements.

## Why superbends

**Approach**
- 		Replace 3 normal conducting, combined function,1.3 Tesla 		dipoles with 3 superconducting 5 Tesla dipoles 			(superbends) and 6 quadrupoles
**Result**
**	****	**Provide up to 12 high brightness, high-energy beam lines 		for users (4 from each superbend)
*	**	**	*

*Demand for more high brightness, high energy x-ray sources from*
**10 to 25 KeV**

- Superbend technical, cost and schedule review

- July 7,8  1999

**Notes:**
The goal of the superbend project is to create sources of high brightness high energy x-ray beams using superconducting magnets. I will talk about the superbend accelerator physics issues. My talk is structured in the following way.
I will give a brief introduction to the superbend project where I will present the motivation for the superbends and compare the superbends  to other high energy x-ray sources. Next I will discuss the modifications to the ring and how that will change the beam  parameters and particularly how it will impact the  other users. I will discuss the possible operational concerns in particular the impact on injection, momentum acceptance and ramping. Finally I will conclude with some summary statements.

## Flux and Brightness

**Flux and Brightness**

**5 Tesla Superbend**

**Photon Energy (eV)**

**Flux  (ph/sec• mrad • 0.1% band)**

**5 Tesla Superbend**

**1.3 Tesla Normal**
**         ****Bend**

- 1014

- 1013

- 1012

- 1011

- 1016

- 1014

- 1015

- 0            5,000           10,000       15,000      20,000

- 0            5,000             10,000         15,000        20,000

**Photon Energy (eV)**

**Brightness  (ph/sec• mm****2**** • mrad****2**** • 0.1% band)**

- 1017

- Flux

- Brightness

**1.3 Tesla Normal**
**         ****Bend**

- Superbend technical, cost and schedule review

- July 7,8  1999

**Notes:**
Howard Padmore has calculated the flux (left) and brightness (right) of  a 5 Tesla superconducting magnet and compared it with other sources: The normal  ALS dipole, the ALS wiggler (both in blue)  and the APS dipole and undulator. If one compares the super bend to a normal  dipole we see that  the superbend is roughly and order of magnetude larger than the normal ALS dipole at 10 KeV and 2 orders higher at 20  KeV.  It also compares favorably to an APS dipole. It is not as bright as a wiggler or and APS undulator.

## Location of the Superbends

**The modified sectors will be 4, 8 and 12**

- Superbend technical, cost and schedule review

- July 7,8  1999

## What has happened up to now

**Initial idea of placing a superconducting magnet in a triple bend achromat, A. Jackson (ALS) and V. Joho (SLS) (1993)**
**AFRD Supercon and Wang NMR successfully build and test prototype superconducting coil and core of a 5T, 10****o ****bending dipole (1995-1998) **
**Superbend project team formed (kickoff meeting September, 23 1998)**
**Passed physics review (December 1998)**
**Based upon recommendations of a critical energy review committee (Chaired by B. Feinberg) ALS director announces that the project will proceed with 3  x  5T superconducting dipoles (February 1999)**
**Machined first of 3 vacuum chambers in preparation for installation of the superbends (June 1999)**
**Preparation for a technical cost and schedule review (July 1999)**
** ****Responding to the recommendations from the physics review committee**
** ****Testing key components of the cryostat system**
** ****Bottoms-up cost and schedule estimate**
** ****Several significant design improvements**

- Superbend technical, cost and schedule review

- July 7,8  1999

## Superbend Project Team

- _Project Engineers_
- Alan Biocca            Egon Hoyer
- C. Corradi	           Steve Marks
- Jan De Vries           Paul Pipersky
- Tom Henderson      Art Ritchie
- Jim Hinkson           John Zbasnik

- _Consultants_
- Shlomo Caspi		 Hiroshi Nishimura
- Winni Decking (DESY)	 Alan Paterson
- Etienne Forest (KEK) 	 Greg Portmann
- Michael A. Green		 Clyde Taylor
- Michael I. Green		Henri Zyngier (Orsay)
- Alan Jackson

- David Robin  	 (Project Leader)
- Jim Krupnick 	 (Project Manager)
- Ross Schlueter      (Lead Engineer)
- Joe Harkins	 (Deputy Project Manager)

- Superbend technical, cost and schedule review

- July 7,8  1999

**Notes:**
Finally I would like to present the project team. Thank you.

## What we want to accomplish from this review

**We would like to begin procurement of the first magnet/cryostat assembly following this review**
**Based upon the magnet design and testing results as well as the project cost and schedule presented we hope you will be able to say that**
**  ****we are prepared to begin procurement of the first magnet/cryostat**
**       ****assembly**
**  ****we have plans that will result in a magnet/cryostat that will meet the    **
**       ****needs of the ALS **
**  ****we have a reasonable cost and schedule for the project**
**This will allow for release of UCDRD funds that are vital for procurement of the first magnet/cryostat assembly**

- Superbend technical, cost and schedule review

- July 7,8  1999