13-BLM Beam Loss Monitor束损探测器
13-BLM Beam Loss Monitor束损探测器
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  • Detail
  • Parameters

BLM

Beam Loss Monitor

Largest dynamic range

Lowest cost of any BLM


Dynamic range

> 1E8

Count rate

> 10 MHz

Principle

The charged particle crosses both PIN diodes, causing a coincidence.
Synchrotron radiation photons, if stopped by either PIN-diode, do not cause a coincidence.

K. Wittenburg was awarded the Faraday Cup in 2000 for the design of the PIN photodiode Beam Loss Monitor and its implementation at HERA.
Bergoz Instrumentation was granted a license by DESY to use Wittenburg's original development.








Features
  • Very small size and low unit cost make it possible to monitor all locations where beam loss is predicted.

  • Vacuum quality around the storage ring can be measured based on BLM count rate.

  • Two PIN-photodiodes mounted face-to-face detect charges particles. Coincidence counting makes it insensitive to synchrotron radiation photons.

  • Spurious count very low: < 1 count in 10 seconds.

  • Up to 10MHz counting: dynamic range >10E8

  • Recovers 100ns after a hit

  • Choice of detector solid angle: Large PIN-diodes can be user installed

  • Output is a TTL compatible pulse: easy counting

  • Tested up to 10E8 Rads for hardness

Specifications

Single particle detection efficiency
PIN-photodiode surface
Spurious count rate
Maximum count rate
Output


>30%
7.34mm2
<0.1Hz
>10MHz
positive TTL 50Ω


Datasheet


价格
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