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Lawrence Berkeley National Laboratory Recent Work Title A High-Frequency Schottky Detector for Use in the Tevatron Permalink
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lambertson, Glen R. |
| Copyright Year | 2013 |
| Abstract | A vexing problem associate d with detection of Schottky signals from a bunched beam is the presence of the coherent signal, which can be 10 or more orders of magnitude greate r than the Schottky signal. However, above the singlebunch cutoff frequency (SBCF), the coherent signal decays rapidly with fre quency . To take advantage of this, we have constructed a Schottky detector for the Tevatron doubler to operate at roughly 2 GHz (the Tevatron SBCF is 200-300 MHz). To enhance signal power density, we have made the detector a high-Q (>9000) resonant rectangular cavity, which should provide a signal-tonoisedensity ratio (SIN) of >10 dB for the Tevatron in the collider mode and >20 dB in fixed target operation . The TM . 'and TM modes 210 120 ' which are made to have slightly differenl ft'equencies, provide sensitivity to both vertical and horizontal particle motions. The 2 GHz Schottky signals are down-converted to frequencies below 100 kHz to permit analysis using a FFT spectrum an1ayzer. The initial installation consists of a single cavity; a second detec tor wi 11 be bu il t which employs a pair of phased cavities to permit discrimination between p' sand p' s . Details of the de-sign of both the cavity and the associated electronics al'e presented . The cavity i s currently undergoing installation at the Tevatron. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://escholarship.org/content/qt62s479xx/qt62s479xx.pdf?t=p0fvvw |
| Alternate Webpage(s) | https://cloudfront.escholarship.org/dist/prd/content/qt779862hz/qt779862hz.pdf?t=p0xg3d |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
