Nakamura Laboratory
[Accelerator Physics Group in SRL-ISSP]

Synchrotron Radiation Laboratory (SRL)
Institute for Solid State Physics (ISSP)

Address: 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
Tel: 81-47136-3401
Fax: 81-47134-6083

We are mainly working on accelerator physics and technology.

Research Subjects:

1. Synchrotron radiation sources and advanced accelerators

2. Next-generation light source: Energy Recovery Linac (ERL)

3. Beam dynamics in accelerators

4. Design and development of state-of-the-art accelerator subsystems and components (magnet, vacuum, RF, monitor, control, insertion device and so on)

The recent activities are as follows:

(1) Design and R&D on Energy Recovery Linac(ERL): Beam dynamics, Injector, Superconducting RF cavity, Fiber laser for a photocathode gun, High-resolution monitor and so on.

(2) Study of novel insertion devices and the effects of their linear and non-linear fields on the beam.

(3) Study of new injection scheme using a pulsed sextupole magnet for top-up injection.

(4) Development of a new beam profile monitor using Fresnel zone plates in order to measure an extremely small beam size less than 10 microns (spatial resolution < 1 micron).

(5) Development of a fast orbit feedback system for beam position stabilization and study on a new orbit correction method uniting global and local orbit corrections for an efficient orbit feedback scheme.

(6) Development of a copper-coated vacuum chamber for reducing resistive-wall impedance under ultra-high vacuum to suppress wakefields and beam instabilities.

Last Update:12 Aug 2009