Related Manuals for Bergoz BLM
Summary of Contents for Bergoz BLM
- Page 1 USER MANUAL Beam Loss Monitor Beam Loss Monitor User’s Manual Rev. 4.0 More than 40 years of experience recognized in the world of particle accelerators...
- Page 2 Version 4.0 Record of updates Version Date Updates performed 06/2017 New release including BLM-DIF 03/2018 Review of the full manual. Obsoletes all previous versions 12/2019 Modification of the cover page and creation of the distributors’ page 07/2024 Manual layout update...
- Page 3 BLM User Manual Version 4.0 DISTRIBUTORS U.S.A. Japan GMW Associates Hayashi-Repic Co., Ltd. www.gmw.com www.h-repic.co.jp sales@gmw.com sales@h-repic.co.jp India China GEEBEE International Beijing Conveyi Limited www.geebeeinternational.com www.conveyi.com info@geebeeinternational.com sales@conveyi.com South Korea Seyoung Co., Ltd www.seyoungsys.com apark@seyoungsys.com...
- Page 4 BLM User Manual Version 4.0...
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Page 5: Table Of Contents
On-line check ........................8 CHANGING THE PIN-PHOTODIODES ..................9 Instructions .......................... 9 COMPTON ELECTRONS SHIELD ................... 10 INSTALLATION ........................11 Mechanical mounting ......................11 Mounting holes ........................12 BLM CONNECTIONS ......................13 OUTPUT SIGNAL PROCESS ....................13 SPECIFICATIONS ........................13 Page 1... -
Page 6: Initial Inspection
Bergoz Instrumentation or its local distributor before return of goods. Bergoz Instrumentation will repair or replace any product under warranty at no charge. For products in need of repair after the warranty period, Bergoz Instrumentation will assess the technical issue and send a quote to the purchaser/customer. The purchaser/customer must provide a purchase order before repairs can be initiated. -
Page 7: Return Procedure
The return of this repaired product under warranty back to the customer is paid by Bergoz Instrumentation. Return of product out of warranty should be made prepaid or will be invoiced. Bergoz Instrumentation will not accept freight-collect shipments. Shipments should be made via UPS, FedEx or DHL. -
Page 8: Scope Of Use
Identify whether the model is BLM-SE has a unipolar single-ended output. It is equipped with two 7.34 mm2 BPW34 PIN-diodes. Note: BLM-DIF, with differential 100-ohm output, and BLM-XL with 150 mm2 S2662 are older models no longer manufactured. Older denomination BLM-XS is now known as BLM-SE. -
Page 9: Identify The Connections
6 ..........+24…25V 7 ..........n/c 8 ..........Ground 9 ..........Enable/Disable A 10 .......... Output Connect the power supplies to BLM-SE: Ground ......... Pin 1 +5V........Pin 2 –5V ........Pin 4 +24…25V ......Pin 6 Connect the oscilloscope: Output ........ -
Page 10: Check #1
If a beta- source with E>900 keV is available, display the counts from MIP secondary electrons (minimum ionizing particles); do not pull-up Enable/Disable A nor B. Bring the high-energy beta- source and the BLM closer to each other, observe the increase in the count rate. -
Page 11: Operating Principle
BLM User Manual Version 4.0 OPERATING PRINCIPLE Detector Type The detector is sensitive to MIPs (minimum ionizing particles) produced when an accelerated particle hits the wall of the vacuum chamber. Refer to Annex I: “Electron Beam Loss Monitor” by W. Bialowons, F. Ridoutt and K. -
Page 12: Dynamic Range
108. The spurious noise, in the absence of any background, is well below 1 count/s. In the presence of an intense X-ray background, the BLM must be shielded by 3 cm of lead to maintain the spurious count rate below 1 count/s. Without a lead shield, the spurious count rate has been observed on HERA to reach 100 counts/s. -
Page 13: Changing The Pin-Photodiodes
PIN-photodiodes can be changed by the user for a larger-area model. Two similar diodes per BLM are required. Instructions • Make sure the BLM works properly before modification: See QUICK CHECK, in this manual. • Remove the printed circuit from its enclosure: •... -
Page 14: Compton Electrons Shield
The consequence of Compton electrons production in one PIN-photodiode is that it may cause ionization in the other PIN-diode. As a result, the PIN-photodiodes produce pulses which are coincident and the BLM gives an output pulse. On very high energy leptons accelerators, these Compton electrons increase the background noise significantly The increase in background noise reduces the BLM useful dynamic range. -
Page 15: Installation
Mathematical simulation would indicate where beam loss is most likely to occur. BLMs will generally be placed with the front applied against the magnets. BLM-SE can be screwed on brackets with two M3 screws. M3 screws will gently make their way into the Ø2.8mm holes of the ABS plastic. -
Page 16: Mounting Holes
BLM User Manual Version 4.0 Mounting holes 33.5 mm 30 mm Page 12... -
Page 17: Blm Connections
Version 4.0 BLM CONNECTIONS BLM-SE connects with a female HE10 connector e.g., 3M, type 3473-6000. Output with a 50-ohm coaxial cable connects to pin 10, ground on Pin 8. At DESY, RG-59 75-ohm coax cables are used for distances up to 100 meters without problems (K. - Page 18 If you have any questions, feel free to contact us by e-mail info@bergoz.com Bergoz Instrumentation – 156, rue du Mont Rond – Espace Allondon Ouest – 01630 SAINT GENIS POUILLY – France Tél. : +33 (0) 459 42 66 42 Fax : +33 (0) 450 42 66 43 – bergoz@bergoz.com www.bergoz.com...
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