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href="https://www.riber.com/mbe-components/">MBE Components</a></span> > <span><a href="https://www.riber.com/mbe-components/mbe-accessories-services/">MBE Accessories & Services</a></span> > <span class="breadcrumb_last" aria-current="page">Cell Shutters</span></span></p><h1 class='blue'>Cell Shutters</h1><div class='cols productview'><div class='col colbox'><div class='box product-img'><a data-fancybox='gallery' data-caption='RIBER - Cell Shutters' href='https://www.riber.com/wp-content/uploads/2020/12/RIBER-Cell-Shutters.jpg' title='RIBER - Cell Shutters'><img src="https://www.riber.com/wp-content/uploads/2020/12/RIBER-Cell-Shutters-400x400.jpg" alt="RIBER - Cell Shutters" loading="lazy" width="400" height="400" /></a></div><div class='box product-cat square'><a href="https://www.riber.com/mbe-components/mbe-accessories-services/" style="background:url('https://www.riber.com/wp-content/uploads/2021/01/100-0026_IMG-400x400.jpg')no-repeat;background-size:cover;"><div class='target'></div><div class='targettxt'>MBE Accessories & Services</div></a></div><div class='box product-file square'><a target='_blank' href='/wp-content/uploads/2020/12/RIBER-Cell-Shutters.pdf'><div class='target'></div><div class='targettxt'>Technical document<br /><span>PDF</span></div><div class='targettaille'>371 Ko</div></a></div><div class='box square request'><a href="#" onclick="vavers('#informations');return false;"><div class='target'></div><div class='targettxt'>Information request</div></a></div></div><div class='col colnobox fiche'><div class='product-content'><div class="infos"> <h2>Details</h2> <ul> <li>Complete blocking of the flux</li> <li>Simple mechanical design</li> <li>No flakes</li> <li>No particle generation</li> <li>Minimizes flux transient</li> <li>Very long lifetime > 1 million cycles</li> </ul> <h2>Presentation</h2> <p>Riber鈥檚 flagship product rocking shutters are fitted to Compact 21 and MBE 412 / MBE 49 / MBE 6000 / MBE 7000 production systems.</p> <p>Source shutters are driven by motors allowing for gentle and controlled opening and closing to reduce particle flaking and particle generation, as opposed to pneumatic shutters, which systematically exhibit brutal accelerations and decelerations when operating. The motion is performed so that in the closed position, the shutters cover the entire source mouth. The shutter position for each effusion cell is controlled independently using Crystal Process control software.</p> <p>The shutter blade is made of high-purity tantalum. The shaft is made of high-purity molybdenum. The shutter blade position is far enough away from the cell mouth to minimize flux transients, yet it is oversized to ensure the complete blocking of flux beams.</p> <p>Self-contained assemblies facilitate maintenance, as it is only necessary to unbolt a single flange to exchange either an entire shutter module or only a shutter plate.</p> <h3>Rocking Cell shutter assembly</h3> <p>All rocking source shutter guide and process commands are on the air side. Opening / Closing movement is transmitted by a bellow, powered by a stepper motor, controlled by the source shutter controller. For complete safety of the movement, the motor rotate between two limit switches.</p> </div> <div class="technique"> <h2>Technical <strong>information</strong></h2> <table> <thead> <tr> <th>Characteristics</th> <th></th> <th></th> <th></th> <th></th> </tr> </thead> <tbody> <tr> <td>System compatibility</td> <td>C21 series</td> <td>MBE412</td> <td>MBE49</td> <td>MBE6000</td> </tr> <tr> <td>Mounting flange</td> <td>CF63</td> <td>CF100</td> <td>CF150</td> <td>CF200</td> </tr> <tr> <td>Bakeout temperature</td> <td colspan="4">250掳C max, motor & cables unmounted</td> </tr> <tr> <td>Typical opening / closing speed (ms)</td> <td>210</td> <td>210</td> <td>600</td> <td>1400</td> </tr> <tr> <td>Double blade version for Ga & In available</td> <td>Yes</td> <td>Yes</td> <td>No</td> <td>No</td> </tr> <tr> <td>Confinment sarcophage available</td> <td>No</td> <td>No</td> <td>Yes</td> <td>Yes</td> </tr> </tbody> </table> <p>Please consult Riber for specific requests, such as PBN or double blades</p> 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