---
search:
boost: 5.0
---
# Slot: chain_length
_Usually required in the Nosé-Hoover thermostat, the chain length (e.g., nh-chain-length in GROMACS) is used to maintain canonical distribution, given as an integer._
URI: [https://CCPBioSim.ac.uk/biosim-schema/chain_length](https://CCPBioSim.ac.uk/biosim-schema/chain_length)
## Applicable Classes
| Name | Description | Modifies Slot |
| --- | --- | --- |
| [Thermostat](../classes/Thermostat.md) | Settings used for the simulation thermostat | no |
## Properties
### Type and Range
| Property | Value |
| --- | --- |
| Range | [integer](../types/integer.md) |
| Domain Of | [Thermostat](../classes/Thermostat.md) |
### Cardinality and Requirements
| Property | Value |
| --- | --- |
### Value Constraints
| Property | Value |
| --- | --- |
| Minimum Value | 0 |
## Identifier and Mapping Information
### Annotations
| property | value |
| --- | --- |
| engine_mapping | [{'engine': 'amber', 'key': 'nhc_chain_length'}, {'engine': 'gromacs', 'key': 'nh-chain-length'}] |
### Schema Source
* from schema: https://CCPBioSim.ac.uk/biosim-schema/
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | https://CCPBioSim.ac.uk/biosim-schema/chain_length |
| native | https://CCPBioSim.ac.uk/biosim-schema/chain_length |
## LinkML Source
```yaml
name: chain_length
annotations:
engine_mapping:
tag: engine_mapping
value:
- engine: amber
key: nhc_chain_length
- engine: gromacs
key: nh-chain-length
description: Usually required in the Nosé-Hoover thermostat, the chain length (e.g.,
nh-chain-length in GROMACS) is used to maintain canonical distribution, given as
an integer.
from_schema: https://CCPBioSim.ac.uk/biosim-schema/
rank: 1000
domain_of:
- Thermostat
range: integer
minimum_value: 0
```